HIGH PERFORMANCE CURRENT SENSING 2012cdnova.com/wp-content/uploads/NKTechCatalog2012.pdf · Ordering Information Sample Model Number: DS3-SDT-24U DS current operated switch with SPDT

HIGH PERFORMANCE CURRENT SENSING

NK Technologies

ENGINEERING GUIDE TO

Products

Current Sensing Switches

Current Transducers

Ground Fault Sensors

Current IndicatorAMPFlasher™

Voltage Transducers

Power MonitoringSensors

Current Transformers

Accessories

Prem

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and T

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rving the Factory and Industrial Automation Markets

2012

NK Technologies —A Company Built Upon A History Of Innovation

Founded in 1982, when Maynard Kuljian saw the need for an economical way to measure current draw, Neilsen-Kuljian, Inc., became the first to develop the low-cost solid-state current sensing technology that underlies the industry today.

True to this heritage, NK Technologies has maintained a focus on developing and manufacturing innovative, cost-effective current sensing products designed to add value and to meet or exceed our customers’ performance expectations. With a portfolio of over 1,300 models, NK Technologies remains a leading supplier of current measurement solutions to the industrial and factory automation markets. As the needs of these markets change, NK Technologies is well-positioned to respond with sophisticated new product designs and improved product functionality necessary to meet those applications.

As a leader in the industry, NK Technologies takes its commitment to customers seriously and considers customer satisfaction a top priority. Timely response to customer inquiries; knowledgeable technical support; a willingness to develop custom solutions to meet specific customer needs; and an organizational commitment to delivering reliable, quality product on time are the hallmarks of excellence which our customers have come to rely on and expect from NK Technologies, a company built upon a history of innovation.

www.nktechnologies.comGo online for more information

• Up-to-date Product Information

• Application Examples

• Engineering Resource Articles

• Sign up for Product updates

• Distributor information

Current Sensors for AutomationFor over two decades, NK Technologies has remained the premier manufacturer of Current Sensors and Transducers serving the factory and industrial automation markets.

With one of the broadest product portfolios in the industry, NK Technologies provides reliable, innovative current sensing products designed to add value and exceed our customers’ expectations. From motor monitoring to heater status, semiconductor tools to water/wastewater plants, NK Technologies has a family of current sensors to meet your application needs.

NK Technologies3511 Charter Park Drive • San Jose, CA 95136

800.959.4014 • www.nktechnologies.com • [email protected] 1

Products

Current Sensing Switches .... A1Selection Guide ..........................page A1DS3, AS1, ASM, AS1 with Output Bypass, AS1 Compact Case, AS3, ASX, AS1 DODC, ASXP, AS1 NOR-FT-GO, AS0

Current Transducers ............. A24Selection Guide ........................page A25AT, ATR, ATP, ATQ, AT/ATR 2, 3 & 4, ATP/ATPR 3 & 4, ATCR, DT Large Aperture, DT, DLT

Ground Fault Sensors .......... A47Selection Guide ........................page A47AG, AGT, AGL

Current Indicator AMPFlasher™ ......................... A56AMPFlasher™ ACI

Voltage Transducers ............ A58VTR, VTD

Power Monitoring Sensors ..................................... A63APN & APO, APS, APT, APMR

Current Transformers .......... A72ProteCT™, Current Transformers

Accessories .............................. A77PBR Series, Din Rail Kits

Applications

Section B contains just a small sample of the application examples that can be found our website at www.nktechnologies.com.

Motors ...................................... page B1Pumps ....................................... page B5Miscellaneous ............................. page B8

RoHS/ISO/Terms & Conditions

See the Inside Back Cover of this catalog for:• RoHS Certificate of Compliance• ISO 9001 DNV Certification• Terms & Conditions

Contents

Test & Evaluation Units

Fo

rOEMs We will help you ... for FREE!The New NK Technologies Test & Evaluation Program can expedite your

evaluation process by getting the right product in your engineers hands for

evaluation fast and free!

� Are you an OEM using switches and transducers on the equipment you sell to your customers?

� Are you looking for a test & evaluation unit?

� Would you like to avoid the time & hassle associated with buying a unit?

Get you design moving forward by simply following the these simple steps.

#1 - Complete following form at www.nktechnologies.com/testunit/

#2 - Meet either in person or by telephone with our Application Engineering team to discuss your product selection so we can confirm the product you have selected is best for your application.

#3 - NK Technologies will ship you your test & evaluation unit at no cost.

#4 - You agree to meet either in person or by phone sometime in the next 60 days to review your the product operation, analyze test results and coordinate a plan to move forward with the design.

It’s that easy ... so start today!

ProductsA

pplications

3511 Charter Park Drive • San Jose, CA 95136800.959.4014 • www.nktechnologies.com • [email protected] Technologies

Ideal for off/on status, overload or underload

indication, current sensing switches from

NK Technologies combine a CT, signal conditioner

and output contacts into a single package for use with

industrial and factory automation equipment.

Features:

• Multiple output ranges

• Adjustable or fixed setpoints

• Models with integral time delay available

• Choice of N.O or N.C., AC or DC Contacts

• Self-powered and split-core options

DS3 SERIES Current Operated Switches .........................page A2

AS1 SERIES Current Operated Switches .........................page A4

ASM SERIES Current Operated Switches .........................page A6

AS1 SERIES WITH OUTPUT BYPASS Current Operated Switches .........................page A8

AS1 SERIES COMPACT CASE AC Current Switch ...................................page A10

AS3 SERIES Current Operated Switches .......................page A11

ASX SERIES Current Operated Switches .......................page A14

AS1 DODC SERIES Current Operated Switches .......................page A16

ASXP SERIES Current Operated Switches .......................page A18

AS1 NOR-FT-GO SERIES Current Operated Relay ............................page A20

AS0 SERIES Current Operated Switches .......................page A22

Current Sensing Switches

A1NK Technologies3511 Charter Park Drive • San Jose, CA 95136

800.959.4014 • www.nktechnologies.com • [email protected]

Our wide range of current sensing switches guarantees that you’ll find exactly what you need. We currently offer 10 series of current sensing switches in AC or DC configurations. To assist in guiding you to the right series for your application, please begin your selection here.

DS3 SERIES – p. A2Hall-effect Sensor

CURRENT SENSING SWITCHES Selection Chart

Load 1.5-200A(Selectable Ranges)

Load 0.5A or higher(Non-adjustable)

Load 1-150A (Single Range)

Load 0.75-50A

Load > 6A

Load < 350mA

AS1 SERIES – p. A4Adjustable Setpoint or Go-No-Go

ASM SERIES – p. A6Self-calibrating Setpoint

AS1 SERIES WITH OUTPUT BYPASS – p. A8Manual Bypass

AS1 SERIES COMPACT CASE – p. A10Go-No-Go, Small Housing

AS3 SERIES – p. A11Immediate Contact Action

ASX SERIES – p. A14Optional Delay on Current Rise

AS1 DODC SERIES – p. A161A. 30VDC Contacts

ASXP SERIES – p. A18SPST Relay Output

AS1 NOR-FT-GO SERIES – p. A20SPST Relay Output

AS0 SERIES – p. A22Ultra-low Current Sensor

MONITOR DC

LOADS

MONITOR AC

LOADS

3511 Charter Park Drive • San Jose, CA 95136800.959.4014 • www.nktechnologies.com • [email protected] NK Technologies

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DS3 SERIES Current Operated Switches

DS3 Series Current Operated Switches combine a Hall effect sensor, signal conditioner and a limit alarm into a single package. The DS3 Series offers three jumper-selected current input ranges and frequency response from DC to 400Hz. Available in a solid-core case with choice of relay or a universal solid-state output.

Applications

Welders and Platers• Instant indication of equipment status.

Large Drive Motors• Provides enhanced field loss protection.

Power Supplies• Signals over-current before equipment fails.

Machine Operation• Instant status of motors, lamps and other loads.

Telecom Sites• Monitors battery output.

Features

Compact, One-piece Design• Fits in easily amongst motor starters and power supplies in

crowded control panels.

Input Isolation• Safer than shunt/relay combinations.

Output Installation• Isolated output greatly simplifies wiring.

Tough• Designed to handle harsh industrial environments.

Adaptive Hysteresis• Hysteresis is 5% of setpoint, allowing closer control than

fixed hysteresis switches.

Built-in Mounting Feet• Simple, two-screw installation allows for secure mounting.

Failure Detection

DS3 SERIES

For additional Sample Output/Power Supply or Application Illustrations, see Supplemental Illustrations on page A80.



Current Sensing Sw

itches

Notes: Pressure plate screw terminals.12-22 AWG solid or stranded.Field adjustable setpoint.

Connections

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Setpoint

21Power

Power Supply12 or 24VAC/DC

Isolated Relay Output(Shown De-Energized)

Isolated Solid State Output(Shown De-Energized)

43

SetpointG R R

Output Isolated Dry Contact

Output Rating • Solid State: 0.15A @ 240VAC or VDC (N.O. Only)

• Relays: 5.0A @ 240VAC, 5.0A @ 30VDC (SPDT)

Off State Leakage <10μA

Response Time • 100ms (10% above setpoint)• 20ms (100% above setpoint)

Setpoint Range 4–20, 10–50 and 20–100A (DC) jumper selectable (derate by √2 for AC)

Hysteresis 5% of Setpoint

Isolation Voltage 3kV

Frequency Range DC to 400Hz

Sensing Aperture 0.75” (19.1mm) dia.

Case UL94 V0 Flammability Rated

Environmental -4 to 122°F (-20 to 50°C) 0–95% RH, non-condensing

Listings UL 508 Industrial Control Equipment (USA & Canada), CE

Specifications

DS3 SERIES

Dimensions

Case

R

C US

Ordering InformationSample Model Number: DS3-SDT-24UDS current operated switch with SPDT relay contacts and 24VAC/DC power supply.

(1) (2) (3)

DS – –

(1) Setpoint Range

3 4–20, 10–50 and 20–100A, Jumper Selectable

C Custom (consult factory)

(2) Output Type

SDT SPDT Relay (Form C)

NOU Solid State N.O. AC/DC

(3) Power Supply

24U +24VAC/DC

12U +12VAC/DC


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AS1 SERIES Current Operated Switches

AS1 Series Current Operated Switches combine a current transformer, signal conditioner and limit alarm into a single package for use in status monitoring or proof of operation applications. Offering an extended set point range of 1–150A and universal, solid-state outputs, the self-powered AS1 can be tailored to provide accurate and dependable digital indication of over-current conditions across a broad range of applications. Available in solid-core enclosure styles or in a split-core case to maximize ease of installation.

Applications

Electronic Proof of Flow• Current operated switches eliminate the need for multiple

pipe or duct penetrations and is more reliable than electromechanical pressure or flow switches.

Conveyors• Detects jams and overloads. • Interlocks multiple conveyor sections.

Lighting Circuits • Easier to install and more accurate than photocells.

Electrical Heaters • Faster response than temperature sensors.

Features

Universal Output• N.O. or N.C. solid state switch for control circuits up to

240VAC/DC.• Compatible with most automation systems.

Self-powered• Cuts installation and operating costs.

Easily Adjustable Setpoint• Speeds startup.

Solid or Split-core Case• Versions tailored for each installation.

LED Indication• Provides quick visual indication of contact status.

Built-in Mounting Feet• Simple, two-screw panel mount or attach with optional

DIN-rail brackets.

UL, CUL and CE Approval• Accepted worldwide.

AS1 SERIES

Connections

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Pump Jam & Suction Loss Protection




Current Sensing Sw

itches

Power Supply None—Self-powered

Output Magnetically Isolated Solid-State Switch

Output Rating • N.O. Version: 0.15A @ 240VAC or VDC • N.C. Version: 0.2A @ 135VAC or VDC • Not polarity sensitive

Off-State Leakage <10μA

Response Time 120 ms

Setpoint Range • Solid-core: 1–150A (adjustable)• Split-core: 1.75–150A (adjustable)


Overload MODEL 6 SEC 1 SEC

• -GO(NOU)• -GO(NCU)• All other

• 500A• 400A• 400A

• 1000A• 1000A• 1000A

Isolation Voltage UL Listed to 1270VAC, tested to 5000VAC

Frequency Range 6–100Hz

Sensing Aperture • -FF Case: 0.55” (14mm) dia.• -FT Case: 0.74” (19mm) dia.• -SP Case: 0.85” (21.6mm) sq.


Environmental -58 to 122°F (-20 to 50°C)0–95% RH, non-condensing

Listings UL 508 Industrial Control Equipment (USA & Canada)

Specifications

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AS1 SERIES

Dimensions

FF Case

FT Case

SP Case

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Ordering InformationSample Model Number: AS1-NOU-SPAdjustable AC current operated switch, normally open, split-core.

(1) (2) (3)

AS1 – – –

(1) Output Rating

NOU Normally Open

NCU Normally Closed

(2) Case Style

FF Solid-core, Front Term.

FT Solid-core, Top Term.

SP Split-core

(3) Options

GO Solid-core 0.75-–250A Split-core 1.25–250A

NL No LED

With LED (Blank)


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Test &Evaluation Units

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ASM SERIES Current Operated Switches

ASM Series Load Monitoring Switches are designed for overload, underload or operating window applications. Upon sensing an average operating current, the ASM self-learns and establishes a limit-alarm trip point based on ±15% of the average expected current draw. The ASM is available in solid- or split-core enclosure styles.

Applications

Conveyors (-OL option)• Detects jams and overloads.• Interlocks multiple conveyor sections.

Electronic Proof of Flow (-UL option)• More reliable than electro-mechanical pressure or fl ow

switches. No need for pipe or duct penetrations.

Pump Protection (-OU option)• Provides overload (jams) and underload (suction loss)

indication.• Interlocks multiple conveyor sections.

Features

Self-powered and Self-calibrating• Speeds start-ups, cuts installation costs.

Status Monitoring, Overload, and Operating Window Options• Choose the operating style that matches your application.

Universal Output• AC or DC compatibility with any automation system.


ASM SERIES


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Smart Sensor output is closed with current 85 - 115% of the normal running current detected by the sensor during calibration procedure



Current Sensing Sw

itches



Output Rating • N.O. Version: 0.30A @ 135VAC or VDC • Not polarity sensitive

Off State Leakage <10μA

Response Time 200ms

Setpoint Range • Solid-core: 1.5–150A • Split-core: 2.8–150A

Setpoint • Overload: +15% of Load (-OL)• Underload: -15% of Load (-UL)• Operating Window ±15% of Setpoint


Overload 500A @ 6sec., 1,000A @ 1sec.

Isolation Voltage UL Listed to 1,270VAC, tested to 5,000VAC


Dimensions 3.50" x 2.25" x 1.20", Aperture: 0.74"–0.85"




Specifications

ASM SERIES

R

C US

Ordering InformationSample Model Number: ASM-NOU-OL-SPAC current operated switch, normally open, self-calibrating overload operation in a split-core case.

(1) (2) (3)

ASM – N O U – –

(1) Output Rating

NOU Normally Open (closed while current is within ±15% window)

(2) Operation

OL Overload

UL Underload (Status)

OU Over/Underload (Operating Window)

(3) Case Style

FT Solid-core, Top Term

SP Split-core

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SP Case

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AS1 SERIES WITH OUTPUT BYPASS Current Operated Switches

AS1 Series with output bypass is a standard AS1 current switch with the additional feature of allowing a user to bypass sensor operation and force the output contacts into their energized state. This feature is benefi cial whenever commissioning or servicing a system as it allows the output circuit to be tested without the sensor having to be operational. Available in -FT solid-core enclosure style only (See AS1 dimensional drawing on page 3).

Features

Universal Output• N.O. or N.C. solid state switch for applications up

to 240VAC/VDC. Compatible with most automation systems and equipment.

Bypass Switch• Switch selectable bypass forces contacts into energized

state (i.e., when setpoint has been exceeded) for system commissioning and testing.

Self-Powered• Reduces installation time and costs.

Adjustable Setpoint• Trip point adjustment from 1–150A.

Integral Mounting Feet• Molded in feet screw mounting or attachment of DIN-

compatible brackets.

Applications

System Monitoring and Status• Monitor fan, pump or heater status; sense when

equipment is on and operating at normal current draw levels.

• Provide electronic “proof of fl ow” without duct or pipe sensor installations.

Conveyor Loading or Jam Sensing• Monitor load on conveyor motors to detect when jams or

overloads occur.• Helpful when interlocking multiple conveyors sections.

Heaters & Lighting Circuits• Sense system operation; faster reacting than thermal motor

overloads and more accurate than photocells in lighting applications.

AS1 SERIES WITH OUTPUT BYPASS


fan housing

PLC Input and power source

Motor current causes the solid state contact to close,and if the coupling breaks the current falls and the sensor output opens again

Bypass switchcloses the contactmanually, no cur-rent needed duringset up

AS1 Series with Output Bypass to PLC



Current Sensing Sw

itches



Output Rating • N.O. Version: 0.15A @ 240VAC or VDC • N.C. Version: 0.2A @ 135VAC or VDC • Not polarity sensitive

Off-State Leakage <10μA


Setpoint Range Solid-core: 1–150A


Overload 6 SEC 1 SEC

• 400A • 1,000A



Sensing Aperture -FT Case: 0.74” (19mm) dia.




Specifications

AS1 SERIES WITH OUTPUT BYPASS

Ordering InformationSample Model Number: AS1-NOU-FT-Y39

(1) (2) (3)

AS1 – – F T – Y 3 9

(1) Output Rating

NOU Normally Open

NCU Normally Closed

(2) Case Style

FT Solid-core, Top Terminals

(3) Options

Y39 Output Contact Bypass

Dimensions

FT Case

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The AS1 Series Compact Case current sensing switch is a compact, inexpensive, easy-to-use ring which slips onto a conductor to give a solid state contact for indication of current fl ow. Ideal for use in control panels, or wherever confi rmation of current fl ow is desired, AS1 Series-CC current switches are a cost-effective way to detect live conductors and see current fl ow to fans, heaters, pumps, lighting or other AC powered devices.

Applications

• Quick reporting of electric motor load status.• Identify open heater circuit connection.• Independent verifi cation that the load is energized.• Confi rmation of operation for critical lighting or

equipment.

Features

Low Sensitivity Turn-On Point• Detect currents as low as 0.5A with a single conductor

pass, eliminates the need to wrap conductors multiple times to increase sensitivity .

Reliable Solid-state Output• No moving parts provide a nearly unlimited number of

operations, and powered from the monitored circuit.

Choice of Outputs• Normally Open or Normally Closed connection. Connect

the leads 24” long leads to a local controller or to a terminal block for remote operation.

Dimensions

Specifi cations

Output/Indication Standard:• Solid-state contact, normally open• Solid-state contact, normally closed

Indicating Range 0.5A minimum

Output Rating 150mA, 120VAC or DC maximum

Dimensions • Overall: 1.125"W x 0.56"D x 1.5"H• Aperture: 0.32”ID• Pigtails: 24”


Mounting Slides directly onto monitored conductor


Frequency Response 50–400 HZ

Listings/Certifi cations UL 508 Industrial Control Equipment (USA & Canada pending)

AS1 SERIES COMPACT CASE

AS1 SERIES COMPACT CASE AC Current Switch

Ordering InformationSample Model Number: AS1-NOU-CCAdjustable AC current operated switch, normally open, solid-core.

(1) (2)

AS1 – N – C C

(1) Output Rating

NOU Normally Open

NCU Normally Closed

(2) Housing Type

CC Compact Case




Current Sensing Sw

itches


AS3 Series Current Operated Switches provide the same dependable indication of status offered by the AS1, but with the added benefit of increased setpoint accuracy. A choice of three, jumper-selectable input ranges allows the AS3 to be tailored to an application, providing more precise control through improved setpoint resolution. Self-powering, isolated solid-state outputs, 1–6A, 6–40A and 40–200A input ranges, and a choice of split- or solid-core enclosures are standard.

Applications

Electronic Proof of Flow • No need for pipe or duct penetrations.• More reliable than electro-mechanical pressure or flow

switches.

Conveyors• Detects jams and overloads.• Interlocks multiple conveyor sections.

Lighting Circuits• Easier to install and more accurate than photocells.

Electrical Heaters• Faster response than temperature sensors.

Features

Choice of N.O. or N.C. Solid State Outputs• 1A @ 240VAC, 0.15A @ 30VDC.• 15A @ 120VAC (-15 model).• 3A @ 120VAC output optional.

Self-powered• Cuts installation and operating costs.

Easily Adjustable Setpoint• Speeds startup.

Solid or Split-core Case• Choose the appropriate version for each installation.

LED Indication• Provides quick visual indiction of contact status.

Built-in Mounting Feet• Provides the secure installation inspectors require.


AS3 SERIES

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2.75

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AS3 SERIES

Dimensions

FF Case

FT Case

SP Case

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Note: Terminals are #6 screws.DC contacts are polarity sensitive.


Output Isolated Solid-state Switch; Shared Common (CCDC)

Output Rating • 1.0A @ 240VAC (Standard AC Units)• 0.15A @ 30VDC (Standard DC & Multi-pole

Units)• 15A @ 120VAC, 10A @ 240VAC

(-15 Option)

Off State Leakage

• NOAC: <10μA• NCAC: 2.5mA• AADC: <10μA

• NODC: <10μA• NCDC: 1.4mA• CCDC: 0.3mA (NC

Terminal)

Response Time 40–120ms

Setpoint Range • Solid-core: 1–6, 6–40 & 40–175A • Split-core: 1.75–6, 6–40 & 40–200A

Hysteresis Low: 0.15A, Mid: 0.3A, High: 0.9A

Overload Range 6 Sec 1 Sec

• 1–6A• 6–40A• 40–175A

• 400A• 500A• 800A

• 600A• 800A• 1,200A






Listings UL 508 Industrial Control Equipment (USA & Canada)*, CE

* UL listing for -FF and -SP models only.

SpecificationsR

C USNote: The bottom 0.31” applies to -15 option only.



Current Sensing Sw

itchesAS3 SERIES

Ordering InformationSample Model Number: AS3-NOAC-FF-NLAdjustable AC current operated switch, normally open AC contacts, solid-core,without indicating LED.

(1) (2) (3)

AS3 – – –

(1) Output Rating

NOAC Normally Open, 1A @ 240VAC

NCAC Normally Closed, 1A @ 240VAC

NODC Normally Open, 0.15A @ 30VDC

NCDC Normally Closed, 0.15A @ 30VDC

AADC Dual, Normally Open, 30VDC (-FF only)

CCDC “Super” Form C SPDT, 0.15A @ 30VDC (-FF only)

(2) Case Style


SP Split-core

FT Solid-core, Top Term.**

*Available with 3A @ 120VAC output.

(3) Options

NL No LED

15 15A @ 120 VAC (-FF only)

The AS3 series current operated switches are the

go-to models for a huge variety of applications.

The models designed to control AC circuits can

be manufactured with one, three or fifteen amp

capacities. The models with DC capabilities can

be manufactured with dual contacts, adjustable

between the selected ranges. NK’s original

designs, refined to a widest range of application.


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ASX SERIES Current Operated Switches

ASX Series Current Operated Switches are high performance current-operated switches with field-adjustable time delay to help minimize nuisance trips during start-up and operation. Designed for motor status applications where setpoint accuracy and repeatability are critical, the ASX Series offers a linear setpoint characteristic and constant hysteresis. Standard features include self-powering, jumper-selectable ranges and a choice of outputs and cases.

Applications

Motor Protection• Serves as an electronic proof-of-operation; detects current

draw changes in motors when they encounter problems such as pumps running dry or pending bearing failure.

• Non-intrusive, less expensive to install than differential pressure flow sensors or thermal switches.

• Much quicker response time than Class 10 overload relays.

High Inrush or Temporary Overload Current• Adjustable start-up/delay timer allows 0.2–15 second

delay to eliminate nuisance trips from high inrush or short overload conditions.

Features

Adjustable Start-up/Delay Timer• Field-adjustable from 0.2–15 seconds to eliminate

nuisance alarms due to start-up inrush or temporary overcurrent conditions.

Choice of N.O./N.C. AC or Universal Outputs• Contact ratings of 1.0A @ 240VAC or universal outputs

of 0.15A @ 240VAC/VDC (N.O. models) and 0.2A @ 135VAC/VDC (N.C. models) for use with most standard motor control systems.

Improved Ease of Installation and Use• 1.0A AC rating eliminates need for time delay relay.• Self-powered, split-core models simplify installation.• Status LED provides visual indication of setpoint trip and

contract action.

Industrial Grade Performance• Constant hysteresis and linear response characteristics

enhance setpoint accuracy.

Agency Approved• UL listed, CE pending.

Isolated Alarm System Interfacing

ASX SERIES




Current Sensing Sw

itches


Output Isolated Solid-State Switch

Output Rating • NOAC/NCAC: 1A @ 240VAC • NOU: 0.15A @ 240VAC or VDC• NCU: 0.2A @ 135VAC or VDC

Off State Leakage <10 micro Amps

Response Time Adjustable 0.2 to 15 Seconds

Setpoint Range Jumper Selectable: 1.5–12A, 12–55A, 50–200A

Hysteresis 5% (constant)

Overload • 1.5–12A Range: 600A max.• 12–55A Range: 800A max. • 50–200A Range: 1,200A max.

Isolation Voltage 5,000VAC (tested)



Environmental 5 to 122°F (-20 to 50°C)0–95%RH, non-condensing

Listings UL 508 Industrial Control Equipment (USA & Canada)*, CE pending.

*Consult factory for UL Listed models.

Specifications

Connections

0.85"21.6mm

0.85"21.6mm

2.25"57.2mm

3.53"89.7mm

3.04"77.2mm

1.18"30mm

0.45"11.4mm

2.40"31mm

dia.

0.19"4.83mm

ASX SERIES

Dimensions

FT Case

SP Case

R

C US

Ordering InformationSample Model Number: ASX-NOAC-SPCurrent Switch w/adjustable time delay, N.O. 1.0A @ 240VAC output, jumper selectable input ranges, split-core enclosure.

(1) (2)

ASX – –

(1) Output Type



NOU Normally Open, 0.15A @ 240VAC/VDC

NCU Normally Closed, 0.2A @ 135VAC/VDC

(2) Case Style

FT Solid-core

SP Split-core


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AS1 DODC SERIES Current Operated Switches

AS1 DODC Series current relay with dual output is ideal for applications where users want to monitor multiple loads simultaneously and alarm when cumulative current draws reach or exceed desired setpoints. Combining the setpoint, LED indication and output functions of multiple sensors into one space-saving package, the AS1 DODC Series allows OEMs to tailor individual trip points to specific processes and trigger independent contacts. The AS1 DODC may serve as an effective over/undercurrent monitor by energizing alarm contacts whenever sensed current falls outside the low and high band setpoints.

Applications

Equipment Motor Protection• Sense brush motor overloads due to entanglements with

bumpers, mirrors, guards, carriers, etc.• Monitor pump motors for overloads or failure due to drive

problems, restrictions, or dry run.• Monitor blower motor status for under/over current

conditions or to determine when multiple blowers are operating.

• Monitor booms or conveyor motors for overload due to obstructions.

High Inrush or Temporary Overload Current• Start-up/delay timer provides two-second delay to avoid

nuisance tripping from high inrush or temporary overload conditions.

Features

Fixed Start-up Delay and Adjustable Trip Timer• Fixed start-up delay of 2 seconds reduces nuisance trips

on inrush.

Choice of Dual Independent N.O. Relay Outputs• Contact rating of 1A @ 30VDC provides adequate

switching capacity for status or alarm indication in most motor control systems without shared common.

Improved Ease of Installation and Use• Self-powered design eliminates power supply wiring.• Multiple status LEDs give quick visual indication of sensor

operation.• Models available for low (0.75–20A) and mid-range

(20–50A) applications.

Industrial Grade Performance• ±2% accuracy on setpoint, minimal hysteresis and fast

response time deliver quality performance.Status Alarming

AS1 DODC SERIES




Current Sensing Sw

itches

Specifications

Connections


Output Dual N.O. Solid State Relays, polarity sensitive

Output Rating 1A @ 30VDC

Trip Point Range (adjustable)

• AS1: 0.75–20A• AS2: 20–50A

Time Delay Start-up: 2.0 seconds (fixed)

Input Range • AS1: 0–20A• AS2: 20–50A

Max Inrush 500A (5 sec. duration)

Hysteresis <8% (max)


Isolation Voltage 1,250 VAC (monitored)



Sensing Aperture 0.75” (19.1mm) diameter

dia.

0.75"19.1mm

1.50"38.1mm

2.90"73.7mm

3.38"85.9mm

3.87"98.3mm

Setpoint"A"

Setpoint"B"

NORMALLY OPEN"A" Contact

NORMALLY OPEN"B" Contact

LED "A" LED "B"

AS1 DODC SERIES

Dimensions

FL Case

Ordering InformationSample Model Number: AS1-DODC-FLAC current switch, fixed 2 second delay, two N.O. 1A @ 30VDC outputs, 0.75–20A range, solid-core enclosure.

(1) (2) (3)

AS – D O D C – F L

(1) Range

1 0.75-20A

2 20-50A

(2) Output Type

DODC Dual N.O. 1A @ 30VDC

(3) Case Style

FL Solid-core


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rOEMs

ASXP SERIES Current Operated Switches

ASXP Series Current Operated Switches are powered versions of our popular current switches with integral time delay. A fixed two-second delay upon trip minimizes nuisance alarms during start-up and operation in motor or heater status applications. After startup a second 0–15 second delay can be set. For use with 24VAC/DC or 120VAC supplies, this high performance product offers OEM-caliber accuracy, precision tolerances, low hysteresis and low (non-sinusoidal) frequency operation. Available with status LED and solid-core enclosure as standard.

Applications

Motor Protection• Serves as an electronic proof-of-operation; detects current

draw changes in motors when they encounter problems such as pumps running dry or pending bearing failure.

• Non-intrusive, less expensive to install than differential pressure flow sensors or thermal switches.

• Much quicker response time than Class 10 overload relays.

High Inrush or Temporary Overload Current• Factory-set two-second delay on startup eliminates

nuisance trips from high inrush or short overload conditions. After startup, a second 0-15 second delay can be added.

Features

Fixed Start-up/Delay Timer• Factory calibrated trip timer set to 2 seconds to eliminate

nuisance alarms due to start-up inrush or temporary overcurrent conditions.

Choice of N.O./N.C. Electro-mechanical Relay Output• Contact rating of 10A @ 240VAC provides adequate

switching capacity for use with most motor control systems.

Improved Ease of Installation and Use• Eliminates need for separate time delay relay.• Choice of 24VAC/DC or 120VAC/DC supply models.• LED provides indication of trip point contact status.• Setpoint adjustable from 1–50A.

Industrial Grade Performance• 0.5% accuracy, precise time delay setpoint, constant

hysteresis, linear response and low frequency capability.

Safety Interlocks

ASXP SERIES




Current Sensing Sw

itches

Power Supply 24VAC/DC or 120VAC/VDC, (±10%), 2VA max

Output Electromechanical SPST Relay, Auto Reset

Output Rating 10A @ 240VAC

Trip Point Range • ASXP1: 1–20A • ASXP2: 20–50A

Time Delay 2.0 sec (fixed on startup)0-15 sec (adjustable after startup)

Max Inrush Current 500A (5 second duration)

Hysteresis 5% (constant)

Isolation Voltage 1,250 VAC (monitored)




Environmental -4 to 122°F (-20 to 50°C)0–95%RH, non-condensing

Specifications

Connections

0.75"19.1mm

1.50"38.1mm

2.90"73.7mm

3.38"85.9mm]

0.80"20.3mm

0.45"11.4mm

3.87"98.3mm

dia.

ASXP SERIES

Dimensions

FL Case

Ordering InformationSample Model Number: ASXP1-NOR-120-FLAC current switch, fixed 2 sec. delay, N.O. 10A @ 240VAC output, 120VAC/VDC supply, solid-core enclosure.

(1) (2) (3) (4)

ASXP – – – F L

(1) Input Range

1 1–20A

2 20-–50A

(2) Output Type

NOR N.O. SPST 10A @ 240VAC

NCR N.C. SPST 10A @ 240VAC

(3) Power Supply

24U 24VAC/DC

120 120VAC/DC

(4) Case Style

FL Solid-core


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rOEMs

AS1 NOR-FT-GO SERIES Current Operated Relay

AS1 NOR-FT-GO Series is a specialized current relay providing an electromechanical relay contact. This output allows the sensor to control much more current than other AS1 models. This contact can control loads up to 5 amps, AC or DC. Solid-state contacts generally have a much lower capacity, making this sensor much more versatile than most self-powered models. Available in a solid core style only. (See AS1 Current Switch data sheet for dimensions.)

Features

Electromechanical Output• N.O. mechanical output relay for detection of current;

closes on current increase.

Fixed Setpoint• Cuts installation and operating costs.

Self-Powered• Reduces installation time and costs.

Integral Mounting Feet• Molded in feet for direct panel mounting or attachment of

DIN-compatible brackets.

Agency Approved• UL and CUL.

Applications

Electronic Proof of Flow• Current operated switches eliminate the need for multiple

conduits or duct penetrations and are more reliable than electromechanical pressure or fl ow switches.

Compressor Monitoring• Detect when the compressor is running.• Allows for time of use logging; helps maintenance

scheduling.

Heaters• Sense system operation.

Fan Interlocks• Sense system operation.• Use to turn on a duct booster fan when clothes dryer is

energized.

AS1 NOR-FT-GO SERIES


Current Switch Monitoring a Fan Load

fan housing

PLC Input and power source

Motor current causes the relay contact to close,and if the coupling breaks the current falls and the sensor output opens again



Current Sensing Sw

itches


Output Electromechanical Relay

Output Rating • NOR - N.O. Version: 5A @ 250VAC 5A @ 30VDC

Off-State Leakage None


Setpoint Range Go/No-go Fixed Trip Point - NOR: 5.8A AC


Overload MODEL 6 SEC 1 SEC

• NOR-GO • 400A • 1,000A

Isolation Voltage Tested to 5,000VAC


Sensing Aperture -FT Case: 0.74” (19mm) dia.




Specifications

AS1 NOR-FT-GO SERIES

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Ordering InformationSample Model Number: AS1-NOR-FT-GO

(1) (2) (3)

AS1 – N O R – F T – G O

(1) Output Rating

NOR Normally Open (mechanical)

(2) Case Style

FT Solid-core, Top Terminals

(3) Options

GO Go/no-go version (fixed-setpoint)

Dimensions

FT Case

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rOEMs


AS0 Series Low-current Sensors are specialized current operated switches that combine an ultra-sensitive current transformer and signal conditioning electronics into a single package for sensing AC current from 3–350mA. Useful for signal or lamp status monitoring, detecting minute fault currents or fan proving, the AS0 Series features solid-state outputs and jumper-selectable ranges, which make it a versatile choice for low-current status indication applications.

Applications

Fan Monitoring• Fan status in heating and drying applications.• Identify lamp outages or other malfunctions through

changes in current consumption.

Fractional HP Motors• Ideal for monitoring small motors used in critical

applications, for example, fan-proving on a crucial cooling fan.

Fault Current Sensing• Detects extremely low levels of current resulting from fault

conditions.

Features

Wide Range of Output Options• Dependable, solid state switch N.O. or N.C. contacts

rated at 240VAC or 30VDC.• Compatible with most automation controllers.

Isolated Inputs and Outputs• Inductive sensing eliminates insertion loads on monitored

circuits, effectively isolating it from the unit.• Isolated outputs simplify wiring and enhance safety.

Adjustable Setpoints• Setpoints are field adjustable from 3mA to 350mA,

speeding installation and allowing for tailored applications.


AS0 SERIES

Status Alarming



Current Sensing Sw

itches

Power Supply Operates from ±20% of nominal voltages

Nominal Voltages 120VAC (50–400Hz) or 24VAC/DC

Power Consumption 2.5 Watts

Output Rating • AC Version: 1A @ 240VAC• DC Version: 0.15A @ 30VDC

Response Time • 150 ms @ 5% above setpoint• 100 ms @ 50% above setpoint

Setpoint Range • Low Range: 3–15mA Field Adjustable• High Range: 15–350mA Field Adjustable

Maximum Input 10A

Isolation Voltage 600VAC (Monitored Circuit)

Frequency Range 50–400Hz (Monitored Circuit)


Environmental -58 to 122°F (-20 to 50°C)0–95%RH, non-condensing

Listings UL Listed*, CSA Approved, CE Certified

*Consult factory for UL Listed models.

Specifications

Notes: Terminals are #6 screws. Use up to 14AWG solid or stranded. Power connections are not polarity sensitive. DC output connections are polarity sensitive.

Connections

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OutputPower

G RPower Status

Range Jumper

Low High

Setpoint

120VAC or 24VAC/DCIsolated Output Available N.0. or N.C., AC or DC Versions

AS0 SERIES

Dimensions

Case

R

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Ordering InformationSample Model Number: AS0-NODC-120Ultra low current sensor, normally open solid state DC output and 120VAC power supply.

(1) (2)

AS0 – –

(1) Output Type





(2) Power Supply

24U 24VAC/DC

120 120VAC


Current Transducers are designed to provide an analog

current reading for monitoring, data logging and panel

meter applications. NK Technolgoies’ current transducers

offer a choice of 0–5VDC, 0–10VDC or 4–20mA

average responding or True RMS outputs. Self-powered

and split-core options make these a cost-effective choice

as a PLC input in motor status applications or where

VFDs are involved.

Features:

• Average responding or True RMS output

• Jumper selectable ranges

• Solid-core, split-core and large aperture models

• AC or DC Current Options

Current Transducers

AT SERIES Current Transducers ..................................page A26

ATR SERIES Current Transducers ..................................page A28

ATP SERIES Current Transducers ..................................page A30

ATQ SERIES Frequency Output Current Transducers .........page A32

AT/ATR 2, 3 & 4 SERIES Current Transducers ..................................page A34

ATP/ATPR 3 & 4 SERIES Current Transducers ..................................page A36

ATCR SERIES Current Transducers ..................................page A38

DT SERIES, LARGE APERTURE Current Transducers ..................................page A40

DT SERIES Current Transducers ..................................page A42

DLT SERIES DC Current Transducers ............................page A45



Our wide range of current transducers guarantees that you’ll find exactly what you need. We currently offer nine series of current transducers in AC or DC configurations. To assist in guiding you to the right series for your application, please begin your selection here.

CURRENT TRANSDUCERS Selection Chart

Load 200A or lower

MONITOR DC

CIRCUITS

MONITOR AC

CIRCUITS

Load 2000A or lower

DT SERIES – p. A42Adjustable Setpoint or Go-No-Go

DLT SERIES – p. A45Manual Bypass

AT SERIES – p. A26Manual Bypass

ATR SERIES – p. A28Manual Bypass

ATP SERIES – p. A30Manual Bypass

ATQ SERIES – p. A32Manual Bypass

AT/ATR 2, 3 & 4 SERIES – p. A34Manual Bypass

ATCR SERIES – p. A38Manual Bypass

DT SERIES, LARGE APERTURE – p. A40Self-calibrating Setpoint

ATP/ATPR 3 & 4 SERIES – p. A36Manual Bypass

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rOEMs3511 Charter Park Drive • San Jose, CA 95136800.959.4014 • www.nktechnologies.com • [email protected] NK Technologies

AT SERIES Current Transducers

AT Series Current Transducers combine a current transformer and signal conditioner into a single package. The AT Series has jumper selected current input ranges and industry standard 4–20mA, 0–5VDC or 0–10VDC outputs. The AT Series is designed for application on ‘linear’ or sinusoidal AC loads. Available in a split-core case or two types of solid-core cases.

Applications Automation Systems• Analog current reading for remote monitoring and

software alarms.

Data Loggers• Self-powered transducer helps conserve data logger

batteries.

Panel Meters• Simple connection displays power consumption.

Features Accurate• Factory matched and calibrated single piece transducer

is more accurate than traditional two-piece field installed solutions.

Average Responding• “Average Responding” algorithm gives an RMS output on

pure sine waves. Perfect for constant speed (linear) loads.

Jumper Selectable Ranges• Reduces inventory.• Eliminates zero and span pots.

Isolation• Output is magnetically isolated from the input for safety.• Eliminates insertion loss (voltage drop).


AT SERIES

Preventative Maintenance of a Critical Lighting System

Notes: Pressure plate screw terminals.12-22 AWG solid or stranded.Field adjustable setpoint.

2(+)1(–)

1mΩ Recommended100kΩ Acceptable

Connections


Current Transducers



-005 Model -010 Model -420 Model

Output Signal 0–5VDC 0–10VDC 4–20mA

Output Limit 8.2VDC 15VDC 32mA

Accuracy 1.0% FS

Response Time(10–90% step change)

100 ms 300 ms

Frequency Range 50–60Hz 20–100Hz*

Other Frequencies Special calibration available for any frequency from 10–400Hz*

Power Supply Self-powered 12–40VDC, Loop-pow-ered

Loading 1 megohm minimum, 100k ohm add 1.3% error

See power requirements on page A80

Isolation Voltage UL listed to 1,270VAC (tested to 5KV)

Input Ranges Field selectable ranges from 0–200A; custom ranges available; consult factory.



Environmental -4 to 122°F (-20 to 50°C) 0–95% RH, non-condensing


*For sinusoidal waveforms only. Select ATR Transducers for distorted waveforms.

Specifications

AT SERIES

Dimensions

FF Case

FT Case

SP Case

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Ordering InformationSample Model Number: AT1-005-000-SPAC current transducer, 10/20/50A range, self-powered with a 0–5VDC output in a split-core case.

(1) (2) (3) (4)

AT – – –

(1) Full Scale Range

0 2 & 5A

1 10, 20, 50A

2 100, 150, 200A

(2) Output Signal

420 4–20mA

005 0–5VDC

010 0–10VDC

(3) Power Supply

24L 24VDC Loop-powered (4–20mA output ONLY)

000 Self-powered (0–5/0–10VDC output ONLY)

(4) Case Style



SP Split-core

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ATR SERIES Current Transducers

ATR Series Current Transducers combine a current transformer and a True RMS signal conditioner into a single package. The ATR Series provides True RMS output on distorted waveforms found on VFD or SCR outputs, and on linear loads in “noisy” power environments. Available in a solid- or split-core case.

Applications

VFD Controlled Loads• Monitoring VFD output indicates how the motor and

attached load are operating.

SCR Controlled Loads• Accurate measurement of phase angle fired (time

proportioned) SCRs.• Current measurement gives faster response than

temperature measurement.

Switching Power Supplies and Electronic Ballasts• True RMS sensing is the most accurate way to measure

power supply or ballast input power.

Features

True RMS Output• True RMS technology is accurate on distorted waveforms

like VFD or SCR ouputs.




Selecting the right transducer:The current waveform of a typical linear load is a pure

sine wave. In VFD and SCR applications, however, output waveforms are rough approximations of a sine wave. There are numerous spikes and dips in each cycle. ATR transducers use a mathematical algorithm called “True RMS” which integrates the actual waveform over time. The output is the amperage component of the true power (heating value) of the AC current waveform. True RMS is the only way to accurately measure distorted AC waveforms. Select ATR transducers for nonlinear loads in “noisy” power environments.

Current Transformer Monitoring

ATR SERIES


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Use the ATR current transducer on the lineor load side of the drive and the signal will be accurate in either position.

Current Transducers



Output Signal 4–20mA, Loop-powered, True RMS

Output Limit 23mA

Accuracy 1.0% FS

Response Time 600 ms (to 90% step change)


Power Supply 24VDC Nominal, 40VDC Maximum


Input Ranges Field selectable ranges from 0–200A; custom ranges available; consult factory.

Sensing Aperture • -FT Case: 0.74” (19mm) dia.• -SP Case: 0.85” (21.6mm) sq.




Specifications

2(+)1(–)OutputRange Switch

MidLow High

(+)(–)24 VDC Power

(+)

(–)

Load(Controller, Meter, etc.)

Connections

Notes:Deadfront captive screw terminals (-SP case).12-22 AWG solid or stranded.Observe polarity.

ATR SERIES

Dimensions

FT Case

SP Case

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Ordering InformationSample Model Number: ATR1-420-24L-SPTrue RMS AC current transducer, 10/20/50A ranges, 4–20mA output, 24VDC loop-powered in a split-core case.

(1) (2) (3) (4)

ATR – 4 2 0 – 2 4 L –


0 2 & 5A

1 10, 20, 50A

2 100, 150, 200A

(2) Output Signal

420 4–20mA

(3) Power Supply


(4) Case Style


SP Split-core

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ATP SERIES Current Transducers

ATP Series Powered Current Transducers sense currents from 0–200A and provide a proportional analog VDC or mA output. Powered by 120VAC or 24VAC/VDC, the ATP Series eliminates the need for costly power supplies or voltage rectifiers inside the control panel. Designed for motor control applications with standard sinusoidal waveforms, the ATP features user-selectable input ranges, a choice of outputs and split-core or solid-core enclosures.

Applications

Commercial and Industrial Motor Control Centers• 120VAC power supply option allows for powering off

of readily available supplies; ideal for pumping, water/wastewater, boiler and other industrial applications.

• Eliminates the need for 24VDC power supply or AC rectifiers within the control panel; saves space, material and labor associated with power supplies.

Features

Fast, Accurate RMS Measurement• Unique ‘average responding’ algorithm provides RMS

output on pure sine wave and constant speed loads, offering improved accuracy over two-piece solutions.

Jumper Selectable Input Ranges• Each unit has multiple input range capability and can be

used for a variety of applications, reducing the need for separate models.

Isolation Output• Output is magnetically isolated from the input for

enhanced safety and elimination of insertion losses.

Notes:Terminals are deadfront captive screw terminals.Use 12-22 AWG solid or stranded.

Heater Failure Detection

Connections

ATP SERIES

Current Transducers



-005 Model -010 Model -420 Model


Output Limit 112% (5.6V) 112% (11.2V) 112% (22.4mA)

Loading 25KΩ min.: VDC Models500Ω max.: 4–20mA Models

Response Time 100ms (10–90% step change)

Frequency Range 40–100 Hz standard. Special calibration for frequencies 100–400Hz, consult factory.

Accuracy • Solid-core: ±1%• Split-core: 1%

Power Supply 120VAC or 24VAC/VDC, 2VA max


Input Ranges 0–200A Jumper-selectable

Sensing Aperture • -FF Case: 0.55” (14mm) dia.• -SP Case: 0.85” (21.6mm) sq.


Environmental 5 to 122°F (-20 to 50°C)0–95% RH, non-condensing

Specifications

Ø 0.55"

2.18"

2.16"

3.30"

2.75"

Ø 0.19"

0.92"

0.85"2.25"

3.50"

3.00"

2.40"

Ø 0.19"

1.19"

0.85"

ATP SERIES

Dimensions

FF Case

SP Case

Ordering InformationSample Model Number: ATP1-420-120-SPPowered AC current transducer, jumper-selectable 0–10/20/50A range, 4–20mA output, 120VAC power supply, split-core enclosure.

(1) (2) (3) (4)

ATP – – –


0 2A & 5A

1 10, 20, 50A

2 100, 150, 200A

(2) Output Signal

005 0–5VDC

010 0–10VDC

420 4–20mA

(3) Power Supply

120 120VAC

24U 24VAC/DC with isolated output

(4) Case Style

FF Solid-core

SP Split-core

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ATQ SERIES Frequency Output Current Transducers

ATQ Series Current Transducers have a patented frequency output design used as an input to high-speed counter or frequency PLC modules, panel meters or programmable relays. Use where no analog inputs are available. Eight ranges from 0–2 to 0–200 amps across three models provide the best available resolution. Designed with a split-core enclosure for easy installation.

Features


like VFD or SCR outputs.



Easy Installation• Split-core enclosure means the monitored conductor does

not need to be disconnected to install the sensor.

Applications

Motion and Motor Control• Pump, grinder, and fan motor status monitoring.• Belt jam sensing in conveyor applications.• Motor control in deburring/brush operations.• Detect strain, acts as an electronic shear pin.

Current Measurement• Measure current use in machine tools, polishing, and

cutting operations where a small PLC has suffi cient capacity to accept the sensor inputs measuring speed, time of use and electrical demands of the equipment.

24 Volt Power

PLC high speed counter or frequencyinput

Frequency Output Control

ATQ SERIES

Current Transducers



Specifications

Connections

Power Supply 24 VAC/DC, <1VA (sensor only)

Output • 5K hertz at full range current• 10K hertz at full range current


Input Frequency 10-400 hZ

Pulse Width • 5k: 90-100 m sec.• 10k: 45-50 m sec.On: 40 m sec. Off: Variable

Isolation Voltage Tested to 5000VAC


Sensing Aperture • -SP Case: 0.85” (21.6mm) square



Listings RoHS Compliant

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1 2 3 4(+) (-)ATQ

24 VDC(+) (-)

Rang

e

PLC(+)

(-)

Sink Connection

AC or DC Power

Sinking Input Connection

1 2 3 4(+) (-)ATQ

24 VDC(+) (-)

Rang

e

PLC(+)(-)

AC or DC Power

Sourcing Input Connection

ATQ SERIES

Dimensions

SP Case

Ordering InformationSample Model Number: ATQ1-05K-24U-SPAC current transducer, 5K frequency at 10, 20 or 50 amps, split-core case.

(1) (2) (3) (4)

ATQ – – 2 4 U – S P

(1) Range

0 0–2 and 0–5 Amps

1 0–10, 0–20, 0–50 Amps

2 0–100, 0–150, 0–200 Amps

(2) Frequency Output

05K 5K Hertz

10K 10K Hertz

(3) Power Supply

24U 24VAC/DC Power (External)

(4) Case Style

SP Split-core

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AT/ATR 2, 3 & 4 SERIES Current Transducers

AT/ATR 2, 3 & 4 Series Current Transducers combine a current transformer and a signal conditioner into a single package for applications from 100A to 2000A. The AT version is Average Responding for use on linear (sinusoidal) loads. The ATR version is True RMS for use on distorted waveforms found in VFD or SCR ouputs. Available in a solid-core case.

Applications

Large Pumps• Detect dry run electronically.

Power Generation• Measure the output of generators.

Electric Heating Elements• Monitors heater loads.• Faster response than temperature sensors.

Features

Large Aperture• Accommodates large conductors or wire bundles.

Select the Right Output• True RMS technology is accurate on distorted wave form

like those associated with VFD or SCR outputs.• Average Responding for use with linear, sinusoidal

waveforms.



Agency Approved• UL, CUL approved.

Selecting the right transducer:The current waveform of a typical linear load is a pure sine

wave. AT transducers measure the peaks of these sine waves, then calculate the average amperage. This works well on constant speed linear loads in “clean” power environments. Select AT transducers for strictly linear loads on “clean” power.

VFD and SCR output waveforms are rough approximations of a sine wave. There are numerous spikes and dips in a mathematical algorithm called “True RMS,” which integrates the actual waveform over time. The output is the amperage component of the true power (heating value) of the AC current waveform. True RMS is the only way to accurately measure distorted AC waveforms. Select ATR transducers for nonlinear loads on “noisy power.”

Motor Load Monitoring

AT/ATR 2, 3 & 4 SERIES


Current Transducers



Output Signal 4–20mA, Loop-powered

Output Limit 23mA

Accuracy 1.0% FS accuracy, True RMS

Measurement True RMS or Average Responding (See Ordering Information)


Frequency Range • ATR: 10–400Hz• AT: 50–60Hz, Sinusoidal


Isolation Voltage 600VAC

Input Ranges • AT/ATR2: 100, 133, 200A• AT/ATR3: 375, 500, 750A• AT/ATR4: 1000, 1333, 2000A





Specifications

Notes:Deadfront captive screw terminals. 12-22 AWG solid or stranded. Observe polarity.

Connections

dia.

3.00"

4.50 "114mm

4.40 "112mm

1.12"28.4mm

5.74"148mm

3.94"100mm

2.50"63.5mm

dia.

0.19"4.8mm

76.2mm

AT/ATR 2, 3 & 4 SERIES

Dimensions

FL Case

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Ordering InformationSample Model Number: ATR3-420-24L-FLTrue RMS AC current transducer, 24VDC, powered with a 4–20mA output, 375/500/750A ranges in a solid-core case.

(1) (2) (3) (4) (5)

AT – 4 2 0 – 2 4 L – F L

(1) Measurement

R True RMS

Average Responding (Blank)


2 100, 133, 200A

3 375, 500, 750A

4 1000, 1333, 2000A

(3) Output Signal

420 4–20mA

(4) Power Supply

24L 24VDC Loop-powered

(5) Case Style

FL Solid-core

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ATP/ATPR 3 & 4 SERIES Current Transducers

ATP/ATPR 3 & 4 Series Powered High-Current Transducers are large-format solid-core transducers designed for high current applications from 200A to 2000A. Powered by 120VAC or 24VAC/VDC, these products take advantage of available power supplies and eliminate the need for costly control power transformers. Options include average responding and True RMS versions, 0–5/10VDC or 4–20mA analog outputs and switch-selectable input ranges.

Applications

Commercial and Industrial MCC’s • Fits conveniently in motor control centers, senses current

on industrial motors and provides analog inputs back to PLC or controller.

VFD or SCR Controlled Loads, Electronic Ballasts• Helpful in monitoring VFD-controlled motors to provide

operational status. ATR Series also provides accurate measurement of ballast input power and phase angle fi red SCRs.

Large Pumping Applications• Ideal for proof-of-fl ow in water/wastewater, boiler and

other industrial pumping applications 150 HP and over. 120VAC or 24VAC/VDC supply options allow for powering off of readily available supply, eliminating need for CPTs.

Power Distribution Centers (PDCs)• Monitors current output on commercial generation

equipment and serves as a current input for use in power consumption calculations.

Features

Large Aperture• Accommodates large conductors or wire bundles.

Select the Right Output• True RMS technology is accurate on distorted wave form

like those associated with VFD or SCR outputs.• Average Responding for use with linear, sinusoidal

waveforms.



Centrifugal Pump Monitoring

ATP/ATPR 3 & 4 SERIES


Current Transducers



Specifications

Model -005 Model -010 Model -420Model


Output Limit 112% (5.6V) 112% (11.2V)

112% (22.4mA)

Loading 25KΩ min.: VDC Models500Ω max.: 4–20mA Models

Response Time • ATP: 100ms (10–90% step change) • ATPR: 600ms (10–90% step change)

Frequency Range • ATP: 40–100Hz, Sinusoidal• ATPR:10–400Hz

Accuracy 1.0% FS

Power Supply 120VAC or 24VAC/VDC, 2VA max


Input Ranges(switch selectable)

• ATP3/ATPR3: 0–375A/500A/750A• ATP4/ATPR4: 0–1000A/1333A/2000A



Environmental 5 to 122°F (-15 to 50°C)0–95% RH, non-condensing

Notes:Terminals are deadfront captive screw terminals.Use 12-22 AWG solid or stranded.

Connections

ATP/ATPR 3 & 4 SERIES

Dimensions

FL Case

Ordering InformationSample Model Number: ATPR3-420-120-FLTrue RMS AC current transducer, 24VDC, powered with a 4–20mA output, 375/500/750A ranges in a fixed core case.

(1) (2) (3) (4) (5)

ATP – – F L

(1) Measurement

R True RMS

Average Responding (Blank)


3 375–750A

4 1000–2000A

(3) Output Signal

005 0–5VDC

010 0–10VDC

420 4–20mA

(4) Power Supply

24U 24VAC/DC

120 120VAC

(5) Case Style

FL Solid-core

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ATCR SERIES Current Transducers

ATCR Series Current Transducers combine a sensing coil and a True RMS signal conditioner as a matched, factory calibrated set. The ATCR Series is designed to produce an analog 4-20 mA signal proportional to AC current up to 2000 amps. Coil opens to pass over the installed conductors. When connected to a controller or data logger, the sensor output is directly proportional to the primary current.

Applications

Monitor Large Machines• Monitoring resistive or inductive load to detect current.• Industry standard 4-20 mA output for connection to PLC

or data loggers.

Flexible Coil Surrounds ConductorsWithout Disturbing Wiring• Install over bus bars, single or multiple conductors easily.• Fast response to changes in operating conditions.

Features


like VFD or phase angle-fi red SC outputs.

Single Range• No chance of fi eld range selection errors.• Eliminates zero and span pots.


Designed to Meet UL508 and CE Requirements• Accepted worldwide.

Compact DIN-rail Mount Enclosure*• Space saving 35mm wide enclosure mounts quickly.

*For information on the DIN Rail accessories kit, see page A79.

Two-Wire Loop Powered Output

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AC current monitoring of large loads:Loads drawing large amounts of power are connected

to the supply using large wire or bus bar. Disconnecting the conductors and threading them through a solid sensing ring or current transformer is diffi cult and time consuming. With this new design, the sensing is accomplished using a coil without a magnetically permeable core. This allows the installer to pass the coil around the conductors after they are connected with a no need to disconnect. The coil is attached to a signal conditioning circuit, and the output signal is powered from the 24 VDC nominal loop voltage. Simple, easy to install, can monitor sinusoidal or distorted current wave forms at frequencies to 400 Hz, and designed for industrial uses.

ATCR SERIES

Current Transducers



Specifications

Connections

Dimensions


Output Limit 23mA

Accuracy 1.0% FS (10-100% of range)


Frequency Range 40–400Hz or higher



Input Ranges Single range, custom ranges available; consult factory.

Sensing Aperture • 0–500 Amp approx. 12 inch long (3.5”OD)• 0–1000 -2000 Amp approx. 17.25”

(5.25” OD)



Listings Designed to meet the requirements of UL508 and CE compliance

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(Controller,Meter, etc.)

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17.25” (open)

59.0”

3.25” (closed)

12” (open)

59.0”

Base

Notes:Fingersafe captive screw terminals.14–22 AWG solid or stranded.Observe polarity.

ATCR SERIES

Ordering InformationSample Model Number: ATCR1-420-24L-DINTrue RMS AC current transducer, 1000 A ranges, 4–20mA output, 24VDC loop-powered, coil sensor connected to DIN rail mounting enclosure.

(1) (2) (3) (4)

ATCR – 4 2 0 – 2 4 L – D


1 0–500 A

2 0–1000 A

3 0–1500 A

4 0–2000 A

(2) Output Signal

420 4–20mA

(3) Power Supply


(4) Case Style

D Coil connected to DIN rail mounting enclosure

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DT SERIES, LARGE APERTURE Current Transducers

DT Series, Large Aperture Current Transducers combine a Hall effect sensor and signal conditioner into a single package for use in DC current applications up to 1200A. The DT Series has factory set and calibrated ranges and industry standard 4–20mA, 0–5VDC or 0–10VDC outputs. Available in solid- core DIN rail mounted enclosure.

DT SERIES, LARGE APERTURE

Applications

Battery Banks• Monitor load and charging currents. • Verify operation.

Transportation• Measure traction power or auxiliary loads.

Wind and Solar Generated Power • Measure the current produced or consumed.• Detect mechanical problems before failure occurs.

Monitor DC Powered Motors• Monitor current of cranes, saws, sorters and positioning

equipment.

Features

Factory Set and Calibrated Ranges • No need for field calibration.• Eliminates zero and span pots.

Isolation• Output is magnetically isolated from the input for safety.• Eliminates insertion losses, no added burden.

Internal Power Regulation• Works well, even with unregulated power.• Cuts installation cost.

DIN Rail Mounted Enclosure• Makes installation a snap.• No drilling or screws to lose.• Optional DIN Rail kit available for chassis mounting.*

*For information on the DIN Rail accessories kit, see page A79.Battery Charging System

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Output Type

DT SERIES, LARGE APERTURE

Dimensions

Connections

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+FS -FS4

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Bipolar Ouput

0

12

Output Signal 4–20mA, 0–5VDC, 0–10VDC

Output Limit • 4–20mA: 23mA• 0–5VDC: 5.75VDC• 0–10VDC: 11.5VDC

Accuracy 1% FS

Repeatability 1.0% FS

Response Time 100ms (to 90% of step change)

Frequency Range DC

Power Supply 24VAC/DC, isolated from output

Power Consumption 2VA

Loading • 4–20mA: 650Ω maximum• 0–5VDC: 25kΩ minimum• 0–10VDC: 50kΩ minimum

Isolation Voltage 3KV (monitored line to output)

Linearity 0.75% FS

Current Ranges Ranges from 0–1200A DC

Sensing Aperture 1.875” (46 mm) dia.


Environmental -4 to 122°F (-20 to 50°C),0–95% RH, non-condensing

Listings UL 508 Industrial Control Equipment (pending), CE (pending)

Specifi cations

Ordering InformationSample Model Number: DT6-420-24U-U-DLSolid-core DC current transducer, 0–500A range, 24VAC/DC pow-ered, 4–20mA, unipolar output.

(1) (2) (3) (4) (5)

DT – – 2 4 U – – D L


5 300A

6 500A

7 750A

8 1000A

9 1200A

(2) Output Signal

420 4-20mA

005 0-5VDC

010 0-10VDC

(3) Power Supply

24U +24VAC/DC

(4) Output Polarity

U Unipolar

BD Bidirectional

(5) Case Style

DL Solid-core, DIN mount

Notes:Deadfront captive screw terminals.12-22 AWG solid or stranded.Observe polarity.Unipolar Output: Signal With Current fl owing in one direction only

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DT SERIES Current Transducers

DT Series Current Transducers combine a Hall effect sensor and signal conditioner into a single package for use in DC current applications up to 400A. The DT unipolar and bipolar models have jumper selectable current input ranges and industry standard 0–20mA, 4–20mA, 0–5VDC or 0–10VDC outputs. Available in split-core or solid-core enclosures.

DT Bidirectional Output models produce a +10 VDC signal with current through the aperture in one direction, and -10 VDC with current passing in the reverse direction. Split-core enclosures only.

Battery Charging System - Bipolar Output Battery Charging System - Bidirectional Output

DT SERIES

Applications

Battery Banks• Monitors load current.• Monitors charging current.• Verifies operation.

Transportation• Measures traction power or auxiliary loads.

Electric Heating Elements• Monitors heater loads.• Faster response than temperature sensors.

Features

Single Range or Three Jumper Selectable Ranges• Reduces set-up time.• Reduces inventory.• Eliminates zero and span pots.


Internal Power Regulation• Works well, even with unregulated power.• Cuts installation cost.

Split-core Design/Built-in Mounting Brackets• Makes installation a snap.


-10 V 0 +10 V

Current Transducers



dia.

0.75"19.1mm

1.50"38.1mm

2.90"73.7mm

3.38"85.9mm]

0.80"20.3mm

0.45"11.4mm

3.87"98.3mm

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4

6

8

10

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10.4

13.6

16.8

20

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Primary Current (range percentage)

DC Current Direction

0

2

4

6

8

10

100% 0 100%

DC

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10.4

13.6

16.8

20

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Primary Current (range percentage)

DC Current Direction

DT SERIES

Dimensions

FL Case

SP Case


Connections


DT Series Unipolar and Bipolar Output Models

DT Series Bidirectional Output Models

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DT SERIES

Ordering Information

DT Series Unipolar and Bipolar Output ModelsSample Model Number: DT2-420-24U-U-SPSplit-core DC current transducer, 0–100/150/200A range, 24VAC/DC powered, 4–20mA unipolar output.

(1) (2) (3) (4) (5)

DT – – – –


0 5, 10, 20A*

1 50, 75, 100A

2 100, 150, 200A

3 150, 225, 300A

4 200, 300, 400A

C Custom Range

DT Series Bidirectional Output ModelsSample Model Number: DT2-010-24U-BD-SPSplit-core DC current transducer, 0–100/150/200A range, 24VAC/DC powered, ±10 VDC bidirectional output.

(1) (2) (3) (4) (5)

DT – 0 1 0 – 2 4 U – B D – S P


1 100A

2 200A

3 300A

4 400A

C Custom Range

(2) Output Signal

010 10VDC

(3) Power Supply

24U +24VAC/DC

(4) Output Polarity

BD Bidirectional

(5) Case Style

SP Split-core

Output Signal • 0–20mA, 4–20mA, 0–5VDC, 0–10VDC• ±10VDC (Bidirectional models only)

Output Limit • 0–20mA,4–20mA: 23mA• 0–5VDC: 5.75VDC• 0–10VDC: 11.5VDC

Accuracy • Solid-core: 1% FS• Split-core: 2% FS

Repeatability 1.0% FS

Response Time • Solid-core: 20ms (to 90% of step change)• Split-core: 100ms (to 90% of step change)

Frequency Range DC

Power Supply • 120VAC • 24VAC/DC, 2VA max.

Power Consumption 2VA

Loading • 0-20mA, 4-20mA: 500 max• 0–5VDC: 25kΩ min.• 0–10VDC: 50kΩ min.

Isolation Voltage 3KV (monitored line to output)

Linearity 0.75% FS

Current Ranges • Field Selectable Ranges from 0–400A• Factory Set Ranges from 0-400A (Bidirec-

tional Models only)

Sensing Aperture • FL Case: 0.75” (19.1mm) dia.• SP Case: 0.85” (21.6mm) sq.




SpecificationsR

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(2) Output Signal

020 0–20mA

420 4–20mA

003 0–3VDC

005 0–5VDC

010 10VDC

(3) Power Supply

24U +24VAC/DC

120 120VAC**

(4) Output Polarity

U Unipolar

BP Bipolar

(5) Case Style

FL Solid-core

SP Split-core

*DT0 Models FL case only.**120VAC power supply FL case only.

Current Transducers



DLT SERIES DC Current Transducers

Applications

DC Current Monitoring• PV Array combiner boxes.• Wind generators.• DC heating applications.• UPS system monitoring.

Photovoltaic Arrays

PV Panel

4 mA

Features

4–20 mA Loop-powered Output• Industry standard connections, positive indication of

correct field wiring.

Single Range• No chance of field range selection errors.• Eliminates zero and span pots.

Isolation• Output is magnetically isolated from the primary circuit for

safety.• Eliminates insertion loss (voltage drop).

Agency Approval• UL 508 Industrial Control Equipment (USA & Canada).

DLT Series DC Current Transducers combine a hall effect sensor and a signal conditioner into a single package. The DLT Series is designed to produce an analog 4–20 mA signal proportional to the DC current in the primary conductor. Available in a solid-core or split-core case design. Lower current ranges make this sensor ideal for use in photovoltaic panel combiner boxes.

Monitoring PV Arrays:The current produced by a photovoltaic module or array

can be easily monitored by using the DLT series current sensors over the conductor exiting the collectors. A simple two-wire connection, powered by 24 VDC nominal in series with the sensor output, and the sensor will produce a signal in real time that is directly proportional to the current being produced.

If a single cell fails, or a module quits operating properly, the current output will drop, and the current sensor will reflect the change.

Safer and more stable than shunts, non-contact current sensors are a simple answer to measuring DC current at any point in the PV system.

DLT SERIES

Free program expedites evaluation process. See page 1 for details


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Connections

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Output Signal 4–20mA, Loop-powered

Output Limit 23mA

Accuracy 1.0% FS


Frequency Range DC



Input Ranges 0-20 to 0-400 DC, see Ordering Information

Sensing Aperture • FF Case: 0.55” (14mm) dia.• SP Case 0.84” (21.7mm) dia.




DLT SERIES

Dimensions

FL Case

SP Case

R

C US

Ordering Information*Sample Model Number: DLTB-420-24L-FFDC current transducer, 50A range, 4–20mA output, 24VDC loop-powered in a solid-core case.

(1) (2) (3) (4)

DLT – 4 2 0 – 2 4 L –


A 0–20 A

B 0–50 A

C 0–100 A

D 0–200 A

E 0–300 A

F 0–400 A

(2) Output Signal

420 4–20mA

(3) Power Supply

24L 24VDC Loop-powered

(4) Case Style (black only)

FF Solid-core, Front Terminals (maximum range 0–100 A)

SP Split-core (minimum range 0–50 A)

*Bulk packaging only.



Over 0.74” but under 1.875”

Detecting ground fault conditions and protecting

sensitive equipment or personnel from harm are

where AG Series sensors can help. A compact design

eliminates two-piece solutions while options include

factory-set or field adjustable trip point; N.O. or N.C.

latching or auto-reset relays, 24/120/240V power

supply and noise immunity.

Features:

• N.O./N.C. solid state switch or mechanical relay outputs

• Field selectable 5mA, 10mA or 30mA setpoints

• Noise immunity option for EMI/RFI sensitive environments

• UL, CE approved


AG SERIES Ground Fault (Earth Leakage) Sensors ..........page A48

AGT SERIES Current Transducers ..................................page A52

AGL SERIES Large Aperture Ground Fault Sensors ...........page A54

GROUND FAULT SENSORS Selection Chart

Under 0.74”

HOW LARGE IS THE WIRE BUNDLE OD?

All current carrying conductors must pass through the sensing window.

AG SERIES – p. A48Contract trip point factory

set between 5 and 950mA

AGT SERIES – p. A52Analog signal proportional to fault current

AGL SERIES – p. A54Contract trip point factory

set between 5 and 950mA

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Features

Broad Range of Options to Match Application Needs• N.O./N.C. solid-state switch or mechanical relay

outputs.• Normally energized or normally de-energized contacts.• Noise Immunity option for use in EMI/RFI sensitive

environments.

Setpoint Options Maximize Ease-of-Use• Field selectable 5mA, 10mA or 30mA setpoints on the

AG3 “Tri-set” model makes user adjustments fast, sure and convenient.

• Single factory calibrated setpoints available form 5mA to 950mA.

Compatible with Standard Equipment• Applicable on single- and three-phase systems.• Ideal for use with shunt trip breakers.• Magnetically isolated from monitored circuit and control

power.

Agency Approved• UL, CE approved.

AG Series Ground Fault Sensors help protect people, products, and processes from damage by ground fault conditions by monitoring all current-carrying conductors in grounded single- and three-phase delta or wye systems.

Applications

Personnel Protection (typically 5mA)• Detects sensitive ground fault conditions, which may be

injurious to personnel and processes.• Functions as sensor and alarm trigger when part of an

overall ground fault protection system.

Equipment Protection (typically 10mA or 30mA)• For applications where personal protection is not the

primary concern, higher setpoint capability helps eliminate nuiscance tripping while still providing adequate ground fault detection to protect machine electronics.

Regulatory• Meets requirements as stipulated by governmental and

industrial regulatory groups for ground fault sensing.

Insulation Breakdown Monitoring

AG SERIES

AG SERIES Ground Fault (Earth Leakage) Sensors

“Zero Sum” Operating Principle:In three-phase delta and wye systems, under normal

conditions current in the ‘hot’ leg of a two-wire load is equal in magnitude but opposite in sign to the current in the neutral leg. As a result, the electromagnetic fields surrounding these two conductors cancel, producing a “zero sum current.” As soon as current leaks to ground (fault condition) the two currents become imbalanced and a net magnetic field results. AG Series sensors monitor this field and trip alarm contacts when the leakage rises above setpoint.




Available Models

AG Series with Solid-state Outputs offer the benefi t of reliable, long-lasting solid-state switches. Sold-state design provides unlimited switch operating life, superior resistance to shock and vibration, zero off-state leakage, high switch speeds and high input-output isolation. Available in solid-core case with screw terminals.

AG Series with Mechanical Outputs are available in solid-core enclosures with a choice between a N.O. or N.C. SPST latching relay and a SPDT Form C relay with auto-reset. All mechanical models can be ordered with factory adjustable setpoint or with a “Tri-set” option, which provides three factory-set, fi eld adjustable setpoints. A noise immunity option is available for applications in harsh EMI/RFI environments.

Output Tables

Normally Energized Models(-FS Option and -ENE Option)Protection from faults and control power loss.

Normally De-energized Models(-NF and -DEN Options)Protection from faults only when power is applied.

Control Power Applied

No Power No Fault Fault

N.C. Normally Closed closed closed open

N.O. Normally Open open open closed

Latching Models (-LA Option)Latching models power up initially in the rest (normal)

mode. If there is a fault condition or the test button is pushed, the output contacts will change state and latch. The output will remain latched regardless of whether the fault is cleared or control power is removed. To reset the output apply a momentary contact across “reset” terminals.

AG SERIES

Control Power Applied

No Power No Fault Fault

N.C. Normally Closed closed open closed

N.O. Normally Open open closed open

Solid-state Outputs

Mechanical Outputs

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G R

Power Output

AG Series

Power

Interupt

HOT

NEUT

1 Power

1 Load

Power Output

AG Series

Power

Interupt

ABCN

3 Wye Power

3 Load

Power Output

AG Series

Power

Interupt

A

B

3 Power

1 Load

Power Output

AG Series

Power

Interupt

ABC

3 Delta Power

3 Load

AG Series Solid-State Sensor

AG Series Mechanical Relay

Connections

Setpoint Range Factory calibrated models (specify when order-ing):• AG1: 5–100mA (005–100)• AG2: 80–950mA (080–950)

TR3 “Tri-set” models (field jumper select):• AG3: 5, 10, or 30mA

Solid-state Output Models

Mechanical Output Models

Output Isolated Dry Contact Mechanical Relay

Output Rating • Solid-state AC Switch 1A @ 240VAC

• Solid-state DC Switch 0.15A @ 30VDC

• Auto Reset: SPDT Relay 1A @ 125VAC, 2A @ 30VDC

• Latching: SPST Relay 1A @ 125VAC, 2A @ 30VDC

Off State Leakage

• <10 micro Amps (N.O.)

• <2.5mA (N.C.)

None

Response Time • 200ms @ 5% above trip point• 60ms @ 50% above trip point• 15ms @ 500% above trip point

Isolation Voltage 5,000 VAC (tested)

Frequency Range 50–400 Hz (monitored circuit)

Noise Immunity Option

N/A • EMI/RFI Shielding• Power supply noise

filtering

Power Supply • 120VAC (55–110% of nominal voltage)• 24VAC/VDC (±20%)• Green LED = Power On indication

Loading 2VA Max.



Listings UL 1053, Class 1 Recognized, CE

Specifications

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AG SERIES


Solid-state Output ModelsSample Model Number: AG1-NOAC-120-FS-005Ground fault sensor with normally open solid-state contact output, 120VAC power supply, 5mA trip point, fail safe version.

(1) (2) (3) (4) (5)

AG – – – –

(1) Setpoint Range

1 5–100mA factory set

2* 80–950mA factory set

3 5/10/30mA jumper set

*Not UL recognized in any configuration.

(2) Output Type





(3) Power Supply

120 120VAC

24U* 24VAC/VDC

*Not UL recognized in any configuration.

(4) Options

FS Normally Energized

NF Normally De-energized

(5) Setpoint

TR3 Tri-set

005 to 950

Factory set trip point in mA

Mechanical Output ModelsSample Model Number: AG1-NOR1-120-LA-005Ground fault sensor with normally open SPST latching relay output, 120VAC power supply and 5mA trip point.

(1) (2) (3) (4) (5) (6)

AG – – – – –

(1) Setpoint Range




(2) Output Type

NCR1 Normally Closed SPST Relay Form B(Available only with -LA option)

NOR1 Normally Open SPST Relay Form A (Available only with -LA option)

SDT1 SPDT Relay (Form C) with auto-reset (Available only with -DEN and -ENE options)

(3) Power Supply

120 120VAC

24U 24VAC/VDC

(4) Options

ENE Normally Energized, auto-reset (SDT1 output only)

DEN Normally De-energized, auto-reset (SDT1 output only)

LA Latching (NOR1 and NCR1)

(5) Setpoint

TR3 Tri-set

005 to 950


(6) Noise Immunity

N Noise Immunity

None (blank)

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AGT SERIES Current Transducers

AGT Series Current Transducers combine a current transformer and a True RMS signal conditioner into a single package. The AGT Series is designed to produce an analog 4-20 mA signal proportional to earth or ground fault current. Available in a solid-core case. When connected to a controller or data logger, NEC requirements for alarm can be met.

Applications

Current Leakage Detection• Monitoring heating or other loads to detect increasing

leakage current.• Pass all current carrying conductors through aperture to

sense zero-sum current.

Very Light Loads• Accurate measurement of very small but critical loads.• Current measurement gives faster response than

temperature measurement .

Features


like VFD or SCR outputs.

Single Range• No chance of field range selection errors.• Eliminates zero and span pots.


Agency Approval• UL, CUL 508 listed.

Selecting the right ground fault detector:NEC Article 427-22 requires that fault currents be

monitored on industrial equipment. However, where maintenance and supervision ensure that only qualified persons will service the equipment and continued circuit operation is necessary for safe operation and processes, alarm indication is also required. A fault current transducer can send a signal to a panel meter with alarm contacts or a controller. As an example, the alarm points can be configured so one alarm is initiated when fault current reaches 30 mA, and another when it rises above 70 mA. Ground fault protection is required in many applications, and NK Technologies has a sensor that can be coupled with your control system to provide this needed alarm or circuit disconnection.

Ground Fault Currents

PROG RET

AGT SERIES





Output Limit 23mA

Accuracy 1.0% FS





Input Ranges Single range of 0-50 or 0-100 mA; custom ranges available; consult factory.

Sensing Aperture -FL Case: 0.74” (19mm) dia.




Specifications

Notes:Finger safe captive screw terminals. 12-22 AWG solid or stranded. Observe polarity.

Connections

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Dimensions

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Ordering InformationSample Model Number: AGT2-420-24L-FLTrue RMS AC current transducer, 100mA ranges, 4–20mA output, 24VDC loop-powered in a solid-core case.

(1) (2) (3) (4)

AGT – – 4 2 0 – 2 4 L – F L


1 0- 50 mA

2 0-100 mA

(2) Output Signal

420 4–20mA

(3) Power Supply

24L 24VDC Loop-powered (4-20mA output ONLY)

(4) Case Style

FL Solid-core, Top Term.

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Features • Integral DIN-rail Mount with Spring Loaded Mounting

Clips*.• Setpoint Options Include Factory Adjustable Setpoint

from 5mA –100mA or “TR3 Tri-Set” Models with Field-selectable 5/10/30mA Settings.

• Finger-safe Terminals for Worry-free Installation and Operation.

• Aperture Orientation is Perpendicular to DIN-rail, Allowing for Clean and Effi cient Wiring and Minimizing Space Between Multiple Components.

• Choice of Dependable Latching SPST or SPDT (Form C) Electromechanical Relay Outputs.

• Uses “Zero Sum” Operating Principle to Reliably Sense Imbalance in Magnetic Fields Associated with Current Leakage to Ground.

• Typical Response Times from 15ms to 200ms .• Integral “Push-to-test” Button with LED Indication of Contact

Status.*See DIN Rail accessory page for panel mounting kit.

AGL Series, new from NK Technologies, is a large aperture ground fault sensor that offers one of the largest aperture diameters in the industry while maintaining a compact overall profi le. Intended for sensing earth leakage in applications up to 400A, the AGL Series offers a choice of N.O. or N.C. latching relays or an SPDT Form C relay with auto-reset. Enclosure features integral DIN-rail mounting as standard and optional noise immunity coatings for applications in harsh EMI/RFI environments.

Applications • Replace bulky two-piece sensor solutions which require

separate CTs or relay modules. • Use with shunt trip breakers to provide total ground fault

protection to sensitive machine electronics.• Detect ground faults in resistance/impedance heating,

industrial automation and control, theatrical lighting, portable power distribution, and snow melt/heat trace applications.

• Sense progressive levels of ground fault in motors or heating systems to detect deterioration prior to catastrophic failure.

Moisture Ingress on a Submersible Pump Motor

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AGL SERIES Large Aperture Ground Fault Sensors

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Setpoint Range Factory calibrated models (specify when order-ing):• AGL1: 5–100mA (005–100)• AGL2: 80–950mA (080–950)

TR3 “Tri-set” models (field jumper select):• AGL3: 5, 10, or 30mA

Output • Auto Reset: SPDT Relay 1A @ 125VAC, 2A @ 30VDC

• Latching: SPST Relay 1A @ 125VAC, 2A @ 30VDC

Response Time • 200ms @ 5% above trip point• 60ms @ 50% above trip point• 15ms @ 500% above trip point

Specifications

Connections

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Ordering InformationSample Model Number: AGL1-NOR-120-LA-005Ground fault sensor with normally open SPST latching relay output, 120VAC power supply and 5mA trip point.

(1) (2) (3) (4) (5) (6)

AGL – – – – –

(1) Setpoint Range




(2) Output Type

NCR1 Normally Closed SPST Relay Form B(Available only with -LA option)

NOR1 Normally Open SPST Relay Form A (Available only with -LA option)

SDT1 SPDT Relay (Form C) with auto-reset (Available only with -DEN and -ENE options)

(3) Power Supply

120 120VAC

24U 24VAC/VDC

(4) Options

ENE Normally Energized, auto-reset (SDT1 output only)

DEN Normally De-energized, auto-reset (SDT1 output only)

LA Latching (NOR1 and NCR1)

(5) Setpoint

TR3 Tri-set

005 to 950


(6) Noise Immunity

N Noise Immunity

None (blank)

Isolation Voltage 5000VAC (tested)

Frequency Range 50–60 Hz (monitored circuit)

Noise Immunity Option

• EMI/RFI Shielding• Power supply noise filtering

Power Supply • 120VAC (55-110% of nominal voltage)• 24VAC/VDC (± 10% of nominal voltage)• Green LED = Power On indication


Environmental -4 to 122°F (-20 to 50°C),0-95% RH, non-condensing


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The AMPFlasher™ is a compact, inexpensive,

easy-to-use LED ring which slips onto a conductor to give

a flashing indication of current flow. Available options

include models with pigtail outputs for remote LED

applications.

Features:

• 5/16” ID suitable for conductors up to 100A

• Low sensitivity turn-on point detects current as low as 0.5A with a single conductor pass

• High visibility flashing LED gives visual status

• Compact 1” package with cable tie for secure mounting

Current Indicator AMPFlasher™

AMPFlasher™ ACI SERIES AC Current Indicators ...............................page A57

Current Indicator A

MPFlasher™



The AMPFlasher™ ACI Series Current Indicator is a compact, inexpensive, easy-to-use LED ring which slips onto a conductor to give a fl ashing indication of current fl ow. Ideal for use in control panels, or wherever confi rmation of current fl ow is desired, AMPFlasher™ current indicators are a cost-effective way to detect live conductors and see current fl ow to fans, heaters, pumps, lighting or other powered devices.

Applications• Quick visual status of electric motor load.• Identify open heater circuit connection.• Provide panel mounted indication of current draw on

monitored load.• Confi rmation of operation for critical lighting or

equipment.

Features

Low Sensitivity Turn-On Point• Detect currents as low as 0.5A with a single conductor

pass, eliminates the need to wrap conductors through multiple times to increase sensitivity .

High Visibilty Flashing LED• Flashing LEDs perform better in daylight conditions and

from multiple angles than constant on LEDs.

Choice of Outputs• LED output standard, optional LED on 24” pigtails for

remote indication.

AMPFlasher™ ACI SERIES AC Current Indicators

Dimensions

Output/Indication • Standard: LED (fl ashing, red) • Optional: 24” Pigtails for Remote LED

Indicating Range 0.5A–100A

LED On/Relay Trip Point <500mA (factory set)

Dimensions • Overall: 1.125"W x 0.56"D x 1.5"H• Aperture: 0.32”ID• Pigtails: 24”


Mounting Slides directly onto monitored conductor


Frequency Response 50–400 HZ

Listings/Certifi cations UL 508 Industrial Control Equipment (USA & Canada)

Specifi cations

Note: Panel opening should be 0.267-0.273”, panel thickness 0.32 to 0.125”

AMPFLASHER™ ACI SERIES

R

C US Ordering InformationSample Model Number: ACI-0.5-LCurrent Indicator with 0.5A sensitivity and red fl ashing LED.

(1) (2)

ACI – 0 . 5 –

(1) Sensitivity Level

0.5 500 mA

(2) Indication/Output

L LED (fl ashing, red)

P 24” Pigtails for remote LED


NK Technologies’ voltage transducers are

high-performance transducer for sensing voltage in

installations. They are available in an AC or DC Series

and come in a variety of nominal voltages.

Features

• AC or DC models

• Standard 4-20mA Powered Output Industry standard output makes use with existing controllers, data loggers and SCADA equipment easy and reliable

• Input/Output Isolation Input and output circuitry electrically isolated for improved safety of use

• Compact DIN-rail Mount Enclosure Space saving 35mm wide enclosure mounts quickly for an attractive installation

Voltage Transducers

VTR SERIES AC Voltage Transducers ............................page A59

VTD SERIES DC Voltage Transducers ............................page A61

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VTR SERIES AC Voltage Transducers

VTR Series is a high-performance True RMS transducer for sensing voltage in single- and three-phase installations. Applicable on nominal circuits of 120V, 240V and 480V, VTR Series voltage transducers provide a fully isolated, 4-20mA output proportional to rated nominal voltage in both sinusoidal and non-sinusoidal (variable frequency) situations. Housed in a slim, compact, easy-to-install DIN-rail mount enclosure, the VTR Series comes in a variety of nominal voltages and with four-wire terminal block connection.

Applications

True RMS Voltage Monitoring• Detect below normal or “brown out” voltage conditions;

protect against possible motor overheating.• Identify phase loss conditions by detecting voltage

reduction in one or more phase of three-phase motor.• Monitor over voltage conditions associated with

regenerative voltage to help in diagnosing/avoiding motor drive issues.

• Detect voltage conditions which may cause stress in or damage to soft starter components (SCRs).

Features

True RMS Output• Allows for use in situations where power supplied is

non-sinusoidal such as VFD applications, poor power quality installations or other electrically harsh/challenging environments.

Standard 4-20mA Loop Powered Output• Industry standard output makes use with existing

controllers, data loggers and SCADA equipment easy and reliable.

Input/Output Isolation• Input and output circuitry electrically isolated for improved

safety of use.

Compact DIN-rail Mount Enclosure*• Space saving 35mm wide enclosure mounts quickly for

an attractive installation.

*For panel mounting see DIN Rail mounting kit accessory page.

Phase Loss Protection

VTR SERIES

24 VDC Supply

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Specifications

Connections

Dimensions

Power Supply 24VDC Loop-powered

Input 120V, 150V, 240V, 480V, 500V

Output 4–20mA Proportional; capped at 24mA max.

Response Time 250 ms (to 90% value)

Accuracy <1%

Linearity <0.5%

Loading <500 ohms


Frequency Range 40Hz–5KHZ

Operating Temp. -30°C to 60°C

Mounting DIN-rail compatible

Case UL94 V0 Flammability Rated; noncorrosive thermoplastic

Environmental 14 to 122°F (-10 to 50°C),0–95% RH non-condensing

EMC/Immunity EN50081-1, EN50082-2

Ripple <1% (peak to peak)


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Ordering InformationSample Model Number: VTR1-420-24L-DINTrue RMS voltage transducer with 120V nominal range, standard 4–20mA proportional output; 24V loop-powered with a DIN-compati-ble enclosure.

(1) (2) (3) (4)

VTR – 4 2 0 – 2 4 U – D I N

(1) Nominal Range

1 120V

2 150V

3 240V

4 480V

5 500V

(2) Output Type

420 4–20 mA

(3) Supply Voltage

24L 24V Loop powered

(4) Mounting

DIN DIN-rail compatible

Voltage Transducers



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VTD SERIESDC Voltage Transducers

24 VAC/DC Supply

PLC Inputs

+-

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VTD Series Voltage Transducers are high-performance transducers for sensing voltage in DC powered installations. Applicable for use on circuits to 600 VDC, VTD voltage transducers provide a fully isolated, 4-20mA output proportional to rated nominal voltage in DC circuits. Housed in a slim, compact, easy-to-install DIN-rail mount enclosure, the VTD Series comes in a variety of nominal voltages.

Applications

Voltage Monitoring• Detect below normal or “brown out” voltage conditions;

protect against possible motor overheating.• Identify conductor loss conditions by detecting voltage

reduction in one motor lead.• Monitor over voltage conditions associated with

regenerative voltage to help in diagnosing/avoiding motor drive issues.

• Detect voltage conditions that may cause stress or damage to soft starter components (SCRs).

Features

Accurate Output• Several ranges available for your application, from 0-15

VDC to 0-600 VDC.

Standard 4-20mA Sensor Powered Output• Industry standard output makes use with existing

controllers, data loggers and SCADA equipment easy and reliable.

Input/Output Isolation• Input and Output circuitry electrically isolated for

improved safety of use.

Compact DIN-rail Mount Enclosure• Space saving 35mm wide enclosure mounts quickly for

an attractive installation.DC Voltage Transducer Control

VTD SERIES

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Connections

Dimensions

Power Supply 24 VAC/DC (20-45DC, 22-38VAC)

Input 15V, 50V, 300V, 600VDC

Output 4–20mA proportional; capped at 24mA max.

Response Time 250 ms (to 90% value)

Accuracy <1%

Linearity <0.5%

Loading <500 ohms


Frequency Range DC

Operating Temp. -30°C to 60°C

Mounting DIN-rail compatible

Case UL94 V0 Flammability Rated; noncorrosive thermoplastic

EMC/Immunity EN50081-1, EN50082-2

Ripple <1% (peak to peak)

Environmental -4 to 122°F (-20 to 50°C),0–95% RH non-condensing

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Ordering InformationSample Model Number: VTD1-420-24L-DINDC voltage transducer with 15V range, standard 4–20mA proportional output; 24V externally powered with a DIN-compatible enclosure.

(1) (2) (3) (4)

VTD – 4 2 0 – 2 4 U – D I N

(1) Nominal Range

1 15V

2 30V

3 150V

4 300V

5 600V

(2) Output Type

420 4–20 mA

(3) Supply Voltage

24U 24V external power supply

(4) Mounting

DIN DIN-rail compatible



Our power monitoring sensors measure loads

and improve performance by providing instantaneous

True Power kW or accumulated kWh data.

They are simple, reliable and accurate.

Digital communications are available in some models.

Contact the factory or a local distributor for more

information.

Features:

• 4–20mA, 0–10VDC, and/or networked outputs

• Accepts standard 5A or 0–333mV CT inputs

• Optional LCD display and RS232 output

• DIN-rail compatibility

Power Monitoring Sensors

APN & APO SERIES Power Monitors .......................................page A64

APS SERIES Power Transducers ...................................page A66

APT SERIES Power Transducers ...................................page A68

APMR SERIES Power Transducers ...................................page A70

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APN & APO Series Power Transducers feature the patented Autophase™ technology, which helps to correct common wiring errors ranging from CT reversal to phase mismatch.

Analog 4–20mA or 0–5/10VDC (proportional to kW) and pulse kWH outputs are available as standard options; RS232 outputs are optional in either configuration.

Applications

Cost Allocation• Measure and display power, both demand (KW) and

consumption (KWH).

Improve Plant Performance• Measure and correct low power factor. • Measure and stop erratic machine operation and

overheats; extending equipment life.

Machine Control• KW monitoring provides a good picture of machine tool

operation.

Generator Performance• A cost-effective way to monitor power output from backup

generators, ensuring “information age” standard.

Features

Meter Grade Digital Accuracy• Provides for reliable measurement.

Patented AutoPhase™ Technology• Senses and automatically corrects for errors in CT

orientation or mismatches between voltage inputs and CTs, identifying the reversed CTs and mismatched phases.

Compatible with a Wide Variety of CTs• APO/APN Series KWH meters accept inputs from

traditional existing 5A CTs or from ProteCT™ 0.333V output CTs which improve safety and eliminate the need for costly shorting blocks.

Available in Quick-mount NEMA-rated Enclosures• Installation is simple and efficient.

Networked Options• RS232 serial communications to monitor 24 individual

data points.

Agency Approved• UL and CUL listed.

Pump Load Monitoring

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APN & APO SERIES

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Accuracy 0.5% FS, True RMS Power ±0.5Hz

Voltage Range 120–600VAC, Auto Range Select, Up to 12KV with optional Potential Transformers

Amperage Range • 5–1500A with ProteCT™ CTs• 50–3000A with Current Output (5A) CTs


Built-in Fuse Rating 600VAC, 0.5A (no external fuses required)

LCD Display Two line, 16 character

Specifications

Connections

5.00"127mm

2.37"

60.1mm

0.50"

12.7mm

0.68"

17.2mm

0.68"

17.2mm

8.85"

224.7mm

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127mm

CT 1

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Dimensions

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Ordering InformationSample Model Number: APN-R32-5A-MX-LMAC power transducer with RS232 output, module for mounting inside a panel or switchgear with an LCD display.

(1) (2) (3) (4) (5)

AP – – – – L M

(1) AP Type

O Non-networkable Power Transducer

N Networkable Power Transducer

(2) Output Type

KWKH KW (4–20mA & 0–10VDC) & KWH Pulse*

R232 RS232*

*APN type only

(3) CT Input

5A 5 Amp CTs (Ratio:5)

PC ProtectCT low voltage output CTs

(4) Case Style

MX Module (Aluminum)

MN Module in NEMA 1 enclosure

(5) Display

LM LCD on Module

Connections • Voltage 12” leads, #18 AWG, pre-tinned• Current Input: Captive screw terminal for

14–22 AWG wire• Outputs: Captive screw terminal for 14–22

AWG wire

Digital Output RS232 ASCII Data String (optoinal)

Analog Outputs* • KW: Choice of two; 4–20mA and 0–5 or 0–10VDC

• Alarm Contact: N.O. solid state contact, 0.1A @ 30VAC/VDC (from 75–95% under voltage)

• KWH: Solid-state contact, 0.1A @ 30VAC/VDC; Range 0.01, 0.1, 1.0 or 10KWH per pulse

Listings UL Listed (Measuring and Testing Equipment)

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APS SERIES Power Transducers

APS Series kWH Power Transducers offer an inexpensive way to measure kWH on single- and three-phase balanced loads. The APS Series constantly measures motor power consumption, which is proportional to the amount of work being done and an indication of the motor load. Ideal for mixing, grinding, machining and pumping applications where power measurement is needed, the APS Series includes a CT, voltage sensor and output signal conditioner in a single package designed for easy installation. Available for input currents up to 180A and nominal voltages up to 480VAC.

Applications

Grinding and Milling Control• Measure grinder horsepower; optimize feed rates.

Viscosity Control • Continuously calculate mixer kW draw; monitor viscosity

without entering vessel.

Tool Monitoring and Jam Protection• Measure drive motor HP to determine tool travel or

contact with work.• Monitor motor horsepower to provide an indication of

motor jams.

Features

True Power Measurement• Measures true power (HP or kW) on balanced loads;

accounts for voltage and power factor fl uctuations and improves sensitivity to load changes.

• Requires only one or two power legs for installation.

Fast and Easy Installation• Current and voltage sensors in one package and 24VDC

loop-powered supply allows for quick and easy two-wire installation.

Factory Calibrated Ranges• Single range factory calibrated to ensure accuracy.

Crusher/Grinder/Shredder Motor Interlocks

APS SERIES

Power M

onitoring Sesnors



Power Supply 24VDC Nominal Loop Powered (40VDC Max.)

Output 4–20mA Proportional to max kW; 25mA Limit

Input Range(s) 120, 240 or 480VAC Nominal, ±25%

Response Time 100 ms (to 90% of step change)

Accuracy 1% FS

Indication Power on LED

Max Inrush Current 300% Full Scale Range (6 sec. duration)

Max. Power Output 0.2 KW to 110 KW; 1/4 HP @ 120VAC to 150 HP @ 480VAC

Frequency Range 50–60 Hz




Specifications

Connections

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Ordering InformationSample Model Number: APS4-420-24L-10.0Single phase watt transducer, 10 kW range, 480VAC input, may be wired with two opposite current wire passes, 4–20mA output, loop powered.

(1) (2) (3) (4)

APS – 4 2 0 – 2 4 L –

(1) Input Voltage

1 120 VAC

2 240 VAC

4 480 VAC

(2) Output Signal

420 4–20mA

(3) Power Supply

24L 24 VDC Loop-powered

(4) Input Range

0.5 0.5 KW

0.75 0.75 KW

1.0 1.0 KW

5.0 5.0 KW

10.0 10 KW

20.0 20 KW

50.0 50 KW

75.0 75 KW

100 100 KW

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APT SERIES Power Transducers

Pump Motor KW Monitoring

APT Series power transducers sense true, “active” power and are a cost-effective way to measure kW on 1Ø or 3Ø applications. up to 600VAC. Powered by 24V, 120V, or 220V supply, the APT provides a fully isolated 4–20mA proportional output making it compatible with most supervisory controllers, panel meters and data loggers. Housed in a compact, DIN-compatible enclosure, the APT accepts standard 5A or 0–333mV current transformer inputs.

Applications

True, Active Power Monitoring• Measure motor power consumption when current

alone provides insufficient resolution (e.g. voltage or PF variation).

• Monitor machine tool finishing operations such as deburring.

• Sense brush entanglements in carwash systems.• Detect dry run or blockages on pumping systems.• Monitor SCR fired electrical heaters.• Monitor general power usage and tripping of electrical

loads.

Features • 4–20mA proportional output to kW; compatible with PLC

and datalogging equipment.• Accepts 5A secondary CTs or 0–333mV ProteCT™ CTs.• DIN-rail compatible package; finger-safe terminals*.


APT

0-5/10VDC4-20mAkW Output

CT Inputs

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APT Output Values The APT Power Transducer will produce the full range

output when the current transformer is producing its maximum output and the voltage is also at the range maximum.

As an example, using the APT-48T-5A-024-420 with 400:5 current transformers, the transducer will produce an output of 20mA with voltage at 480, and with the load using 400 amps. When using one current transformer to monitor a single phase load this will represent 192,000 watts with unity power factor. The equation for single phase watt calculation is E (voltage) times I (amps) times power factor.

Continuing with the example, if the transducer is monitoring a three phase load, with voltage at 480 and three current transformers connected, the transducer will produce an output of 20mA when there is 400 amps in each phase, and again, unity power factor. This output signal will represent 332,544 watts. The equation for three phase watts is E (voltage) times I (amps) times √3 (1.732) times power factor.

The transducer can also monitor a three phase load, using two current transformers. The transducer will produce an output of 14.67mA when there is 400 amps in two phases and unity power factor, and the monitored voltage is 480. This output signal will represent 2/3 of the actual wattage.

APT SERIES

Power M

onitoring Sesnors



Specifications

Power Supply 24, 120, or 220 VAC (±10%), 2VA max

Output 0–5VDC, 0–10VDC or 4–20mA

Accuracy 0.5% Full Scale (True RMS KW)

Voltage Range 120–600VAC


Amperage Range • 5A–4,000A w/standard 5A secondary CTs • 5A–1,500A w/ProteCT™ 333mV CTs

Indication Power on LED

Mounting DIN-rail Compatible

Power Consumption

<2.0VA

Isolated Voltage 1250VAC

EMC EN50081-1, EN61000-6-2


Environmental -4 to 122°F (-20 to 50°C), 0–95% RH non-condensing

Connections CTs (3), Voltage Inputs (3), Output (two-wire)

Dimensions

Connections

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In summary, the APT can be used to monitor single or three phase loads, and the output is scaled to represent the actual watts used by the load on a three phase circuit with three current transformers connected, 2/3 of the full scale output with two current transformers on a three phase circuit, and the actual watts used with one current transformer monitoring a single phase load. The transducer output depends on the current transformer ratio, the monitored voltage and how many current transformers are connected.

Ordering InformationSample Model Number: APT-48T-5A-120-010

(1) (2) (3) (4)

APT – – – –

(1) Voltage

12T 120V

24T 240V

48T 480V

60T 600V

(2) CT Inputs

5A XXX:5 5A Secondary

MV XXX:333mV Secondary

(3) Supply Voltage

024 24VAC

120 120VAC

220 220VAC

(4) Full Scale Output

005 0–5VDC

010 0–10VDC

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APMR SERIES Power Transducers

APMR Series power monitoring relays are intended for sensing true, active power and measuring KW on 1Ø or 3Ø applications. Applicable on nominal circuits of 120, 240, 480, and 600VAC, the APMR offers multiple relay outputs adjustable to trip when desired power thresholds are reached. As an added benefit, a fully isolated 4–20mA output proportional to sensed KW is standard. All trip points and associated time delays are individually adjustable and each has its own status LED. Applicable on variable frequency systems, the APMR comes in a compact, DIN-compatible enclosure and is an ideal choice for applications requiring power sensing and reporting.

Features • Dual output relays for switching loads once power trip

points are reached.• Accepts 5A secondary CTs or 0–333mV ProteCT™ CTs• 4–20mA proportional output to KW for compatibility with

PLC and datalogging equipment.• DIN-rail compatible package; finger-safe terminals*.• Built-in adjustable time delays.


APMR SERIES

Power M

onitoring Sesnors



Power Supply 24VAC/VDC, 120VAC, 208VAC or 240VAC

Output • Relays (2): 5A @ 240VAC; 5A @ 24VDC• Analog: 4–20mA Proportional to max.

kW; 25mA Max

Input CTs Standard 0–5A or 0–333mV CTs

Sensed Voltages 120, 208, 230, 480, or 600VAC

Response Time <200 ms (to 90% value)

Delay Timers • Inrush: 2 sec. (factory set) • Individual: 0–25 sec. adjustable

Setpoint Adjust 0–100% of Full Load kW

Setpoint Accuracy ±2%

Power Consumption <5VA

Frequency Range 30Hz–400Hz

EMC EN50081-1, EN61000-6-2



Dimensions

Connections

Specifications

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APMR SERIES

Ordering InformationSample Model Number: APMR-12T-5A-120-FL

(1) (2) (3) (4)

APMR – – – – F L

(1) Monitoring Voltage

12T 120V Three-phase



(2) CT Inputs

5A XXX:5A Secondary

MV XXX:333 mV Secondary

(3) Supply Voltage

24U 24VAC

120 120VAC

(4) Case

FL DIN-rail Mount Enclosure


We offer current transformers (CTs) for use with power

transducers, panel meters, and in two-piece installations

with transducers and switches to extend ranges for high

amperage/large conductor applications.

Features:

• 5 Amp or 0-333mV secondary outputs

• Split-core or solid-core enclosures

• Agency approved

• Ratios from 50 Amps to 200 Amps

Current Transformers

ProteCT™ Series mV Current Transformers ............................page A73

Current Transformers 5Amp Secondary ....................................page A75

Current Transform

ers



Fo

rOEMs



ProteCT™ SERIES mV Current Transformers

ProteCT™ Series Current Transformers are intended for use with APT and APO/APN Series power transducers, ProtectCT™ low voltage output current transformers provide easy sensing of current on three-phase applications with the added safety of a 333mV output secondary. Available in split-core packaging as standard.

Applications• Tailored for use with AP Series AutoPhase KW/

KWH transducers.• Self-powered design works well in data logger

applications.• Excellent response time for power monitoring

applications.

Features

0.333V Output Secondary• Unique low voltage output allows safe opening of

transformer secondary, protecting installers from shock hazards found on traditional 5A CTs.

Eliminates Need for “Shorting Blocks”

Standard Split-core Enclosure Design• Snap close package speeds installation and eases

retrofits for existing jobs.• Eliminates need to power down or disconnect system to

install CT, maximizing up time.

High-Impact, UL94 V0 Rated Polymer Housing• No exposed metal parts on assembled ProteCT™

devices.

Choose From Three ID’s: 0.85”, 1.25”, 2.0”

PROTECT™ SERIES

Cur

rent

Tra

nsfo

rmer

s



Power Required None—Self-powered

Accuracy ±1% NKP, ±2% CTP models

Output 0–0.333V

Phase Angle <1 degree., 2 degrees @ 50% Range

Response Time <1 ms


Max. Primary Voltage 5000VAC (insulated conductor)

Max Inrush Current 300% Full Scale Range (6 sec. duration)

Environmental 0 to 122°F (-18 to 50°C), 0-95% RH non-condensing

SpecificationsDimensions

NKP-075-xxx CTP-125-xxx CTP-200-xxx

Width 2.25” (57.2mm)

3.25” (82.55mm)

4.75” (120.65mm)

Height 2.40” (61.0mm)

3.35” (85.09mm)

5.00” (122.5mm)

Depth 1.18” (30.0mm)

1.00” (25.4mm)

1.20” (30.48mm)

Window 0.85”(22.0mm)

1.25”(31.75mm)

2.00”(50.80mm)

NKP-075 0.85”(22mm) Window

Model Input Range

NKP-075-005SP 0-–5 Amps

NKP-075-015SP 0–15 Amps

NKP-075-030SP 0–30 Amps

NKP-075-050SP 0–50 Amps

NKP-075-070SP 0–70 Amps

NKP-075-101SP 0–100 Amps

NKP-075-151SP 0–150 Amps

CTP-125 1.25”(31.75mm) Window

Model Input Range

CTP-125-101 0-–100 Amps

CTP-125-151 0–150 Amps

CTP-125-201 0–200 Amps

CTP-125-251 0–250 Amps

CTP-125-301 0–300 Amps

CTP-125-401 0–400 Amps

CTP-125-601 0–600 Amps

CTP-200 2.0”(50.8mm) Window

Model Input Range

CTP-200-601 0-–600 Amps

CTP-200-801 0–800 Amps

CTP-200-102 0–1000 Amps

CTP-200-122 0–1200 Amps

CTP-200-152 0–1500 Amps

Connections

PROTECT™ SERIES

Current Transform

ers



Fo

rOEMs



CURRENT TRANSFORMERS5Amp Secondary

5Amp Secondary Current Transformers offer a compact, cost-effective means of measuring primary current and providing 0–5A secondary output proportional to the primary current being sensed. Available in solid-core or split-core enclosures.

Power Supply Self-powered

Current Ranges See Ranges/VA Burdens

Output Signal 0–5A (AC)

Frequency 50–400 Hz

Insulation Class 0.6 KV BIL, 10KV full wave

Accuracy ANSI rated, (<2.0%)

Allowable Burden

See Ranges/VA Burdens

Rating Factor 2.0 @ 30°C amb.

Features• Solid-core enclosures; choice of round package with

flying leads or integral feet for panel mount with terminals.• Optional split-core enclosures for easy installation without

disconnecting wiring.• Aperture diameters From 1 1/8” to 3 1/4”.• Agency approved.

Applications• Serves as current input for use with APT and APO/APN

Series KW transducers.• Save space in control panels by remotely locating CTs

closer to load.• 5A secondary compatible with standard products offering

a 5A analog input option.• Broad line accommodates primary currents from 50A to

3000A.

Specifications

CURRENT TRANSFORMERS

Cur

rent

Tra

nsfo

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s


Dimensions

Ranges/VA Burdens

Series Aperture Size

2 1.13” (28.7 mm)

5 1.56” (39.6 mm)

7 2.50” (63.5 mm)

8 3.25” (82.6 mm)

1SP 0.84”x 2.00”

3SP 2.19”x 3.25”

5SP 2.88”x 4.25”

7SP 2.88”x 6.25”

CURRENT TRANSFORMERS


Solid-core CTs:Sample Model Number: 2RL-501-NK

(1) (2) (3)

– – NK

(1) Series

2, 5, 7, or 8

(2) Case

RL Round Doughnut

SFT Square, Integral Mounting Feet

(3) Model

XXX See Ranges/VA Burdens

Split-core CTs:Sample Model Number: 7SP-600-00-L24-NK

(1) (2) (3)

– – 0 0 – L 3 6 – NK

(1) Series

1SP 100–400A

3SP 200–1200A

5SP 300–2000A

7SP 600–3000A

(2) CT Ratio

XXXX See Ranges/VA Burdens

(3) Lead Type

L36 36” Lead Wires

Mod

el

CT

Ra

tio:5 Solid-core Series Split-core Series

2 5 7 8 1SP 3SP 5SP 7SP

500 50 1 0.75 0.5

750 75 2 1.25 1

101 100 2.5 2.25 2 1

151 150 4 5 2.5

201 200 5 5 5 5 1.5 1

251 250 7.5 12.5 5 7.5

301 300 10 12.5 5 15 2 1

401 400 12.5 12.5 25 5 2

501 500 25 15 35 3 2

601 600 25 25 50 5 3

801 800 30 35 60 10 5

102 1000 35 35 75 20 15 10

122 1200 40 40 75 25 15

152 1500 50 90 35 20

162 1600 50 100

202 2000 120 50 40

252 2500 50 50

302 3000 50



Accessories

PBR SERIESPowerBASE™ Relays ................................page A78

Industrial grade relays specially designed for quick connection to AS and AT Series switches, providing additional relay flexibility.

DIN RAIL KITS ........................................page A79

DIN-RAIL and DIN-2 kits allow NK Technologies’ switches, transducers and ground fault sensors to be mounted on DIN-rail.

Acc

esso

ries



Fo


PBR PowerBASE™ Series are industrial-grade relays in a specially designed package. PBR relays quick connect to NK Technologies’ top terminal AS and AT series current operated switches and transducers. This compact combination provides added function and flexibility.

Applications

Motor Control• Switches up to NEMA size 5 starter (200HP motor.)• Directly controls fractional HP loads.

Heaters and Lamp Control• Eliminates contactors for loads to 10A.

Features

PowerBASE™ Relay and Current Sensor Combo• Acts as an "interposing relay.• Isolates controller from line voltage.

Cuts Installation Costs• Reduces electrician’s labor.• Eliminates need for relay panel.

UL, CUL and CE Approved• Accepted worldwide.

PBR SERIES PowerBASE™ Relays

Contacts 10A resistive, 7.2A inductive @ 240VAC

Coils 12U: 12VAC/DC ±30%, 18.5mA24LU 24VACD/DC ±30%, 10mA

Dimensions 2.65” W x 1.5” D x 0.9” H, 4.5” Base


Compatibility All “FT” and “SP” case models

Environmental 0 to 122°F (-18 to 50°C),0–95% RH non-con-densing


Specifications

PBR SERIES

R

C US

Ordering InformationSample Model Number: PBR-10C-24UPowerBASE™ Relay with 10A contacts and universal 24-volt coil.

(1) (2)

PBR – 1 0 C –

(1) Contact Rating

10C 10A Form C

(2) Coil Voltage (see specifications)

12U 12VAC/DC, Low Current

24U 24VAC/DC, Low Current

Accessories



DIN RAIL KITS

DIN Rail KitRail Material Rail is galvanized steel;

35mm x 7.5 mm x 175 mm

Rating Conforms to EN50035, 50022, DIN 46277

DIN-2 Adapter KitRail Compatibility “Top Hat” Type: 35 x 15mm, 35 x 7.5mm

“G” Type 32 x 15mm

Bracket Material UL 94-V2 Rated Thermoplastic

Temp Range -40 to 212°F (-40 to 100°C)

Specifi cations

DIN Rail Kit

“Top Hat” type rail.

“G” type rail.

DIN Rail Kits provide a convenient method to facilitate the mounting of the AGL, VTR, APT, and APMR Series of NK Technologies’ sensors. The kits can also be used to mount other products to a panel as needed.

Features

DIN Rail Kit• Includes two end stops and a bichromated galvanized

steel rail.• High mechanical and corrosion resistance.• Slotted design allows for attachment to most suitable

surfaces.• Rail can be cut in fi eld to desired length.

DIN-2 Adapter Kit• Includes two plastic brackets and attachment

screw to mount the sensor to the rail.• Compatible with “top hat” or “G” type rail.

Part Number for DIN Rail Kit: DINKITPart Number for DIN-2 Adapter Kit: DIN-2


VTR Voltage Transducer

AGL Ground Fault Sensor

DIN RAIL KITS

Free program expedites evaluation process.See page 1 for details


Fo

rOEMs

Supp

lem

enta

l Illu

strat

ions


ASM Series

AS1, AS3, ASX, ASXP Series

DS3 Series

AT Series Power Supply

AT/ATR, ATP/ATPR Series

DT Series Output Polarity

Sample Output/Power Supply

AMPS

TIME

StartupI nrush

Normal Operation

Jam

MOTOR OFF

Overload or Jam

0 500250 1000750Total Loop Impedance (Ohms)

25

20

15

10

5Loop

Pow

er (

VDC)

Operating Range

AMPS

TIME

StartupI nrush

Normal Operation Belt or Coupling Breaks

Underload or Status

0 25 50 75 100 125112

25

50

75

100

112

0

125

% O

utp

ut

Sig

na

l

4-2

0m

A,

0-5

V,

0-1

0V

Input % of Range

TIME

AMPS

100%

0%

FIELD ADJUSTABLE SETPOINT

ContactEnergized

ContactDe-energized

SUPPLEMENTAL ILLUSTRATIONS


Supplemental Illustrations



Two-Piece Solution for Sensing Current in High Amperage or Large Conductor ApplicationsFor situations where conductor size and/or current rating exceed sensor or transducer specifications, an auxiliary CT can be used in conjunction with an AS Series current switch or AT/ATR Series current transducers. As shown in above, the 5A secondary of a 1200:5 split-core CT is passed through the aperture of an NK sensor with the trip point or output set accordingly.

Input Range

Output+–750A

500A

375A

Input Range

Output+–750A

500A

375A

Load( controller,

meteretc.)AT/ATR Transducer

( loop powered)

AT/ATR Transducer( loop powered)

Load( controller,

meteretc.)

+

+

–

–

H

NG

ToAC

Power

+

–

To Other Transducers

Power Supply

SupplyPower Output Contacts

50:5 amp CT

Monitored Load

Multiple WrapsIncreases Current SensedBy Transducer

Output Signal

Supplemental Applications

Powering Multiple Transducers From a Single SupplyFor applications where multiple loop-powered (4-20mA output) transducers are installed, it may be cost-effective to power multiple transducers from one power supply as shown.

Use of Auxiliary CT to Monitor Fault Currents in Large ConductorsBy using an auxiliary CT to fit around large conductors, ground fault currents of 25mA and up may be sensed by using multiple turns of the CT secondary through the aperture of the ground fault sensor as shown. As the number of turns required varies based on CT value, desired trip points and sensor setpoint, contact factory for assistance in this application.

Sensing Ultra Low Currents with AT/ATR Series TransducersIn an instance where the monitored current is well below 1A nominal, it may be practical to wrap the conductor through the aperture multiple times to magnify the signal. For transducer applications, care must be taken to correctly scale PLC/Controller inputs to correct values as each pass of the conductor through the aperture increases the amperage sensed by the transducer. For example, a 100mA signal passed through 5 times will be read as a 500mA signal and yields an output signal of 8mA on an ATO and ATRO Series transducer.


3511 Charter Park Drive • San Jose, CA 95136800.959.4014 • www.nktechnologies.com • [email protected] Technologies

APPLICATIONS BY PRODUCT

Motors Fan Status: Independent Verification of Operation . page B1DC Motor Installations ..................................... page B1Conveyor Jam Protection .................................. page B2Saw Load Monitoring ...................................... page B2Crusher/Grinder/Shredder Motor Interlocks ........ page B3Closed Loop Control ....................................... page B4Status Alarming .............................................. page B4

PumpsPump Jam & Suction Loss Protection .................... page B5Pump Load Monitoring .................................... page B6Vacuum Pump Monitor ..................................... page B6Moisture Ingress on a Submersible Pump Motor .... page B7Spin Pumps ................................................... page B7

MiscellaneousSolar Panels .................................................. page B8

ApplicationsHere’s just a SMALL look into the many applications where NK Technologies’ products can be used. Please visit

our website at www.nktechnologies.com for more examples.

Visit our website for all the technical, application and support information that you could ever want or need!

Applications

B1NK Technologies3511 Charter Park Drive • San Jose, CA 95136


Fan Status: Independent Verification of Operation

Good engineering practice suggests that every control output should have a corresponding status input for verification. On fans and pumps a current sensing switch can be snapped over one motor leg and the output fed to the automation system. NK Technologies’ self-powered Current Sensing Switches will close when the motor turns on and open when the motor is off. By adjusting the setpoint pump coupling or fan belt failure can be detected. This reliable solid-state solution eliminates the need for unreliable pressure current switches and their costly installation.

Electric motors. Electric motors are found extensively in both the manufacturing and processing

industries. Both AC and DC powered motors are used to drive pumps, fans, conveyors and a broad range of specialized equipment. There are many types of motors designed for many different applications, however all require electrical current in order to generate the magnetic fields that are necessary to create rotation. By measuring this current useful information can be made available regarding the status of the motor and the equipment that is connected to it. This may be as basic as independently verifying the run status of the motor or in conjunction with a PLC, for example, to protect a pump against dry run. Thus current may be used to both monitor and protect motors and motor-driven equipment.

Current Sensing Switches Selection Guide — page A1

MOTORS

DC Motor Installations

Many applications requiring high torque at low speeds, like bridge cranes and log carriages, use DC shunt wound motors. Since it is relatively easy to control the speed of a DC motor by adjusting the voltage to the field windings, precise regulation is afforded to applications like printing press paper feeds or web control of multiple motors in the paper making process. Using an NK Technologies’ DC Current Transducer will provide an analog signal that can be used to keep the motor from over-current situations. Using an NK Technologies’ DC Current Sensing Switch will insure that if the motor field supply is lost, the motor will not over-speed to the point of self-destruction.

Current Sensing Switches Selection Guide — page A1Current Transducers Selection Guide — page A25

App

licat

ions


Conveyor Jam Protection

When conveyors jam and the drive motor continues to run, expensive mechanical damage to the drive components often occurs. By installing an NK Technologies’ Current Sensing Switch an overload condition, detected by higher than normal running amps, can be used to switch off power to the motor before mechanical damage results. The switch setting can be adjusted so it is not affected by normal changes in conveyor load. Current sensing switches are the modern day equivalent of less reliable electromechanical jam relays that have been in use for many decades.

In situations where there may be large variations in load an NK Technologies’ Current Transducer may be used to feed motor amps to the conveyor control system, commonly a PLC. The PLC may be programmed to accommodate different setpoints for different mechanical loads so that jam protection is provided from light to heavy loads. In situations where the conveyor is not able to accept analog signals NK Technologies has developed a patented transducer with a frequency output suitable for the Digital Inputs of most PLCs.

Saw Load Monitoring

Often a band saw is used to cut logs into rough planks, before the planks are processed into finished lumber. Due to inconsistencies in the log (knots, burls and checks), the speed that the log is pulled through the saw must be varied. The operator will often reduce the speed of the cut when smoking occurs, or the blade breaks. By installing an NK Technologies’ Current Transducer the operator’s job is made easier. By watching the log and a display representing the current draw of the band saw, the operator can achieve a higher rate of output with less down-time.

A similar arrangement can be used with circular saws. The blades become brittle after excessive heating if they are worked too hard. Many automatic systems are in use whereby the current draw is used to reduce the motor load typically by reducing the feed-rate.

Current Sensing Switches Selection Guide — page A1Current Transducers Selection Guide — page A25

Current Transducers Selection Guide — page A25

MOTORS

Applications



Crusher/Grinder/Shredder Motor Interlocks

The performance of size reduction equipment like crushers or grinders can be optimized by controlling the in-feed in order to

• Help prevent jamming

• Improve the uniformity of the resultant product

• Enhance overall production efficiency

By installing an NK Technologies’ Current Transducer or Power Monitoring Sensors to monitor the in-feed to a crushing process, the speed of the in feed drive can be slowed when the crushing motor is working too hard, or the speed can be increased when the crusher is under worked. The analog 4-20 mA proportional signal is fed directly into a VFD, and the drive does the rest of the control.

Additionally, NK Technologies’ Current Sensing Switches installed on other conveying motors can be used to signal malfunction (for example over-load or motor failure) to help prevent costly equipment damage.

NK technologies current sensors come in a variety of configurations for quick and simple installation either for the OEM or End-User.

Current Sensing Switches Selection Guide — page A1Current Transducers Selection Guide — page A25Power Monitoring Sensors — page A63

MOTORS

App

licat

ions


Closed Loop Control

Normal linear AC induction motors have a current characteristic that increases with load. Thus a measurement of current is proportional to the motor load. NK Technologies’ True RMS Current Transducers are designed to work in conjunction with variable frequency drives (VFD) and measure the current in the leg of the motor.

At an engine block manufacturing facility NK Technologies’ Current Transducers provide the input to a PLC used to position the rotating wire brushes in order to clean away burrs and debris after machining. As the current, and thus the load, changes so the brushes are positioned for optimal clean-up. Similarly Power Monitoring Sensors are used to control the position of wheel wash brushes in a carwash. Power measurement provides a more linear relationship for motors and other loads with non-linear current characteristics. Current Sensing Switches are used to co-ordinate operations between conveyor, washing and drying systems.

Status Alarming

The auxiliary contacts in a motor starter are commonly used to indicate when the motor is running. However, auxiliary contacts only indicate the position of the contactor, not the actual load status. If a downstream disconnect is open (for example, for maintenance) or the contact fails (either sticks or dirt build-up) there can be serious consequences.

At a large fish farm, failed aerator pumps resulted in massive stock losses. Because the auxiliary contacts remained closed when the pump failed, the alarm was never activated, the back-up pumps were not switched on and the fish suffocated due to lack of oxygen. Now NK Technologies’ Current Sensing Switches have been installed to provide an alarm signal and a signal to automatically switch over to the back-up aerator pumps.

Current Sensing Switches Selection Guide — page A1Current Transducers Selection Guide — page A25Power Monitoring Sensors — page A63


MOTORS

Applications




Pumps can become jammed due to foreign matter and cause damage to both the pump and the motor before thermal overloads are tripped. Additionally a blockage in the suction line of the pump can cause the pump to run dry, overheat and break a seal.

By simply installing an NK Technologies’ self-powered Current Sensing Switch in one leg of the motor overload (pump jam), underload (suction loss) or underload & overload can be detected quickly before damage occurs.


PUMPS

Pumps. Pumps are similar to fans but they push or pull liquids or gases through a tightly confined space. Most are driven with electric motors, and monitoring

the current or power used by the pump, a great deal of information about the system can be obtained. Bearings wear and cause the pump to consume more energy to operate. An open discharge line will create a condition where the drive motor uses less current than during normal operation, and if the pump is used to move waste water or sewage, the operator needs to know immediately that there is a problem. An impeller can become pitted from water bubbles or corrosion, and this can cause an over current condition. A power monitor measuring all three phases will detect a loss of phase before it can destroy the drive motor windings. All conditions will be detected well before a fuse opens, a circuit breaker trips, or the overload elements trip.

App

licat

ions


Pump Load Monitoring

NK Technologies’ Current Transducers are used to monitor motor current and therefore motor load. The output from the transducer may be fed to an analog or digital indicator or a Programmable Logic Controller (PLC) for more sophisticated monitoring and control.

NK Technologies’ Power Monitoring Sensors provide load monitoring in more critical applications where the addition of voltage measurement and the determination of the phase relationship between current and voltage (power factor) provides more control.

NK Technologies’ Ground Fault Sensors keep the pumps safe by measuring ground leakage currents as low as 5mA. This also provides an alternative to moisture sensors used with submersible pump motors.

See Also:Pump Jam & Suction Loss Protection – page B5Moisture Ingress on a Submersible Pump Motor – page B7

Current Transducers Selection Guide — page A25Ground Fault Sensors Selection Guide — page A47Power Monitoring Sensors — page A63

PUMPS

Vacuum pumps are used in a variety of applications in the semiconductor industry, heat treatment, plastics and packaging industries. By adding an NK Technologies’ Current Transducer over the lead feeding a vacuum pump, it can easily be determined when all the air has been removed from a vessel or envelope. The analog output can

Vacuum Pump Monitor

signal the vacuum or equipment controller that it is time for the next step in the process. In the case of an automated packaging machine, a drop in current will signal that the package is ready for sealing.


Applications



Moisture Ingress on a Submersible Pump Motor

An NK Technologies’ Ground Fault Sensor installed on a submersible pump motor provides an easy to install replacement or addition to moisture sensors housed in the motor casing. Unlike moisture sensors that have to be wired back to the motor control center, the GF sensor is installed in the motor control center. By detecting the ground fault current resulting from moisture ingress or other potentially dangerous conditions remedial action can be taken prior to catastrophic failure. Either the pump can be replaced at the next convenient time or switched off and a back-up pump started.

Ground Fault Sensors Selection Guide — page A47

Spin Pumps

Spin Pumps are used in the manufacture of synthetic fibers and yarns. Very precise control is required to insure that the product feed rate and the fiber draw rate is matched. It is critical to monitor and protect these spin pumps because they are the heart of the system and are required to run continuously. By installing an NK Technologies’ Current Transducers, the motor current may be monitored providing the control system with key information regarding load. Variations in load may be attributable to a number of factors such as bearing failure, seal failure, suction loss etc. The measurement of load together with other process variables like pressure and flow can provide invaluable information regarding the operation of the vital spin pumps.


PUMPS

App

licat

ions


Miscellaneous There are other electrical components and systems that use electric power where current measurement will provide useful and important information regarding status or provide protection.

MISCELLANEOUS

Solar Panels

Photovoltaic arrays are used primarily in two ways to:

• Charge batteries that are used to power remote loads where installing a connection to the utility grid would be cost prohibitive

• Energize installations where the DC power is converted to 60 HZ AC power through a solid state inverter.

NK Technologies’ DC Current Transducers can be installed so the output of the arrays can be monitored. These transducers are available in bipolar versions so that current may be measured during charging or discharging of the batteries.

Additionally NK Technologies’ Power Monitoring Sensors can be installed to monitor the voltage, current and frequency output from the inverter.

Current Transducers Selection Guide — page A25Power Monitoring Sensors — page A63

Applications

NK Technologies3511 Charter Park Drive • San Jose, CA 95136


TERMS AND CONDITIONS OF SALE 1. Price and Delivery

All prices are FOB shipping point or our factory, San Jose, CA. Delivery shall be established by mutual agreement and/or defined as acknowledged by NK Technologies. All orders are subject to a $100 minimum order total. Drop shipments are done on an as needed basis and may incur an additional handling charge.

2. Shipping and Risk of Loss

NK Technologies shall package products for normal shipping con-siderations. Further NK Technologies may arrange and prepay all transportation charges with the understanding that all costs associated with the delivery beyond the FOB point will be billed to and assumed by the purchaser. All risk of loss or damage to the products pass to the buyer upon delivery to the carrier at the FOB point: the carrier acting as the buyer’s agent.

3. Terms of Payment

Payment shall be made in full within thirty (30) days from the date of prod-uct shipment. NK Technologies reserves the right to require full or partial payment in advance of shipment or otherwise change payment terms.

4. Title

Title to the products will pass to the buyer upon delivery to the carrier at the FOB point; provided however, NK Technologies will retain a purchase money security interest in each product until all of it’s claims arising out of the furnishing of such products have been satisfied in full.

5. Warranty

NK Technologies warrants that all NK Technologies manufactured products will be free from defects in material and workmanship for the period of five (5) years after receipt by the buyer unless otherwise stated in the product literature. This warranty does not apply to any products or parts not manufactured by NK Technologies, however NK Technolo-gies does agree to assign and transfer to the buyer, insofar as it is permitted by contract or by law, the manufacturer’s warranty pertaining to any such products. In any product fails to conform to the warranty applicable to such product, NK Technologies’ sole and exclusive li-ability shall be, at it’s option, to repair, replace or credit the purchaser’s account with an amount equal to the price paid for such products which are returned by the purchaser during the acceptable warranty period with such products’ manufacturing date code intact. The foregoing warranties are in lieu of all other warranties, express or implied, includ-ing without limitation, any warranties of merchantability or fitness for a particular purpose. All warranties (other than those expressly set forth above) are hereby disclaimed and excluded by NK Technologies. NK Technologies neither assumes nor authorizes any person to assume any other liabilities in connection with the sale or use of any products.

6. Returns

Unless agreed to in advance by NK Technologies, all sales are considered final and all merchandise shall be considered the property of the purchaser. At it’s discretion, NK Technologies may allow for the return of product purchased within the last 180 days in exchange for a restocking charge of twenty-five (25) percent and/or an offsetting order for a value amount equal to or exceeding that of the product returned. Returns of product categorized as “N-R”, non-returnable is prohibited. Any merchandise, warranty or other type of product return shall require a Return Material Authorization (RMA) issued by authorized NK Technologies factory personnel. Unless agreed to in advance by NK Technologies, all products returned shall be shipped at the expense of the purchaser.

RoHS CERTIFICATION OF COMPLIANCE European Directive 2002/95/EC on the Restriction of Hazardous SubstancesThe European Community (EC) directive 2002/95/EC, also known as the RoHS Directive, restricts the use of hazardous substances listed be-low in the manufacture and sale of electrical and electronic equipment.

Based on the information provided to us by the suppliers of raw materi-als used in the manufacture and delivery of our products and services, NK Technologies maintains a list of specific model numbers and product families designated as RoHS Compliant for orders placed on or after October 1, 2006.

RoHS Compliance shall be taken to mean that,

• With regard to existing designs, RoHS certified substitutions for all materials and components have been specified.

• Components used in the production of compliant parts are certified RoHS compliant and our suppliers have confirmed this compliance status.

• Soldering operations involved in the production of compliant products are performed using lead-free solder.

• Products bear an RoHS compliance logo indicating their status.

Additionally, RoHS Compliance production safeguards assume,

• Where appropriate, process reviews have been performed to ensure the absence of restricted substances.

• Compliant components and materials are segregated from non-compliant components and materials while in inventory.

For purposes of RoHS certification, any Product/Model Number so designated shall contain less than the concentration value of restricted substances by weight in homogenous materials specified as follows:

• Lead .............................................. 0.1%• Mercury .......................................... 0.1%• Hexavalent Chromium ....................... 0.1%• Polybrominated Biphenyls ................... 0.1%• Polybrominated Diphenyl Ethers ........... 0.1%• Cadmium ...................................... 0.01%

Please contact our factory for informa-tion regarding the RoHS compliance status of any NK Technologies product and/or to obtain specific RoHS Com-pliance Certificates.

ISO 9001 DNV CERTIFICATIONNK Technologies’ commitment to quality goes beyond compliance; we’ve adopted an integrated Quality Management System that ensures our manufacturing and business processes are not only compli-ant with international industry standards, but provide products and services that ensure customer confidence and satisfaction.

The foundation of our quality management system is our ISO 9001 registration. However we’ve gone beyond the requirements of certification to develop a quality system that is a continuous built-in,

quality assurance cycle that we improve upon consistently.

Please visit our website for more information about our Quality Standards and our ISO 9001 Certification: www.nktechnologies.com/quality-policy.html

For expert technical help, contact your local Authorized Representative or Authorized Distributor.

© NK Technologies 2012 01-12.LS.5K.DBH

3511 Charter Park Drive • San Jose, CA 95136

800.959.4014 • [email protected]

www.nktechnologies.com

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HIGH PERFORMANCE CURRENT SENSING 2012cdnova.com/wp-content/uploads/NKTechCatalog2012.pdf · Ordering Information Sample Model Number: DS3-SDT-24U DS current operated switch with SPDT