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Type Series 81000TM medium-voltage controllers selection and application guideE50001-F710-A120-X-4A00

Series 81000TM

medium-voltage controllers

Siemens experience gained in over 50 years of supplying medium-voltage motor controllers in the U.S. has been captured in the Series 81000 design.

The objective has been to incorporate features designed to provide safety, while simplifying operation and maintenance, as well as minimizing installation cost.

Series 81000 medium-voltage controllers are designed for use in industrial plants, commercial buildings, electric utility generating plants, cogeneration installations and other electrical systems.

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Table of contents

Overview 4 - 6

Construction 7 - 17

Motor protection 18 - 20

Vacuum contactors 21 - 25

Fuse applications 26 - 29

Dimensions 30 - 33

Typical layout arrangements 34 - 37

Standard controller components 38 - 43

3

Overview

The Siemens Series 81000TM medium-voltage motor controller has a modular design consisting of one or more contactors, housed in a freestanding sheet steel enclosure. Each controller is NEMA Class E2 and includes three current-limiting fuses. The enclosure is designed for front access, allowing the equipment to be located against a wall or back-to-back.

The design and manufacture of the Series 81000 medium-voltage controller unit is based on our experience as a leading manufacturer of motors worldwide. The benefits of this experience result in control scheme flexibility and increased safety, while simplifying operations, maintenance and minimizing installation costs. Typical applications include:

Squirrel-cage induction motors (non-reversing, reversing or multi-speed)

Reduced-voltage starters (autotransformer, reactor or solid-state type)

Synchronous motors (brush or brushless type)

Transformer feeders

Capacitor bank feeders

Power bus feeders (tie).

The utilization voltage range for controllers is 2.3 kV through 13.8 kV.

The Siemens Series 81000 medium-voltage controller allows the user to combine vacuum contactors, latched contactors and load-break switches in one lineup. The user can also connect directly to Siemens type GM-SG medium-voltage metal-clad switchgear with a transistion section. This provides extreme flexibility in systems design.

Load-break switches (LBS)

Drawout controllers

Drawout controllers include:

Full-voltage non-reversing (FVNR)

Reduced-voltage primary reactor (RVPR)

Reduced-voltage autotransformer (RVAT)

Reduced-voltage solid-state (SSRV)

Brushless synchronous (BL-SYNCH)

Brushtype synchronous (BT-SYNCH)

Two-speed two-winding (2S2W)

Two-speed one-winding (2S1W)

Reversing.

4

Overview

Table 1: Controllers and load-break switches (LBS)

Controller type

2.3 kV 4.16 kV 6.9 kV 13.8 kV

Maximum motor size

Drawout to 3,000 HP to 5,500 HP to 7,000 HP to 5,500 HP

SSRV to 3,000 HP to 5,500 HP to 4,000 HP to 6,500 HP

Load-break switch (LBS)

600 A Fused Fused ---- ----

Unfused Unfused Unfused ----

1,200 A Fused Fused ---- ----

Unfused Unfused Unfused ----

Table 2: Ratings

System voltage

Vacuum contactor

Enclosed continuous ampere rating

Interrupting capacity

Motor horsepower rating (three-phase)

Transformer loads

Unfused class E1

Fused class E2

Synchronous motors

Induction motors

Maximum motor fuse rating

Maximum three-phase

Maximum fuse rating

kV Type A kA kA 0.8 PF

1.0 PF

HP kVA

2.3 97H3 360 5 50 1,500 1,750 1,500 24R 1,500 450E

2.3 96H6 720 7.2 50 3,000 3,500 3,000 57X 2,000 600E

4.0 97H3 360 5 50 2,500 3,000 2,500 24R 2,500 450E

4.0 96H6 720 7.2 50 5,500 6,000 5,500 57X 3,500 600E

4.6 97H3 360 5 50 2,500 3,000 2,500 24R 2,500 450E

4.6 96H6 720 7.2 50 5,500 6,000 5,500 57X 4,000 600E

6.91 97H3 360 4.2 50 4,000 5,000 4,000 24R 1,500 200E

6.91 96H6 720 7.2 50 7,000 7,500 7,000 57X 2 2

13.8 3TL71 300 3.0 50 5,500 6,000 5,500 300E 5,500 300E

Footnotes:1. Nominal motor voltage 6.6 kV. (Temporary overvoltage of 7.6 kV)2. Consult factory.

5

Overview

Contactors class E1 unfused

NEMA refers to this unfused, magnetically held device as a class E1 controller. Type 97H3 (360 A) vacuum contactors are rated 5 kA (up to 5.0 kV) and 4.2 kA (up to 7.2 kV) interrupting capacity, while the type 96H6 (720 A) vacuum contactor is rated 7.2 kA interrupting capacity up to 7.2 kV. Type 3TL71 (300 A) vacuum contactor is rated 3.0 kA interrupting capacity up to 13.8 kV.

Contactors class E2 fused

To meet interrupting capability required for NEMA class E2 controllers, types 97H3, 96H6 and 3TL71 contactors are provided with primary current-limiting fuses in all three phases. The resulting interrupting ratings are shown in Table 2.

Standards

The key standards applicable to medium-voltage controllers are:

NEMA ICS 3-2005, part 1

UL-347

NEC (Article 490).

Series 81000 controllers with vacuum contactors comply fully with these standards, and can be provided in compliance with specialty standards, such as the California Code.

Vacuum technology

Series 81000 controllers utilizing type 97H3, 96H6 or 3TL71 vacuum contactors offer extended service life and provide long mechanical and electrical life with minimal maintenance.

Arc interruption is completely contained within vacuum interrupters, eliminating the need for arc chutes, blowout coils, pole plates and similar wear items.

Extended electrical life

Since arc interruption takes place in a sealed environment within the vacuum interrupter, arcing times are very short. As a result, arc erosion of the contacts is minimal, and an operating life of 250,000 operations at rated load-current is typical.

Single-phase protection

The Siemens type 3RU overload relay (standard) is available in the Series 81000. Unlike conventional overload relays provided by other manufacturers, the type 3RU includes standard single-phase protection.

UL Listing

The Series 81000 offers a broad range of UL Listed (and C-UL) class E2 controllers. Consult your local Siemens representative for information on UL Listing (or C-UL) status for specific projects.

Power fuses

The current limiting fuses used with type 97H3 vacuum contactors are ANSI Class "R" type FM (up to 4.8 kV) and type A720R (over 4.8 kV and up to 7.2 kV) rated for motor starting duty.

Class "E" fuses, used for non-motor loads such as transformers and capacitor banks, can also be provided in Series 81000 controllers.

Class "E" fuses, type CL-14 are used for full- voltage and solid-state, reduced-voltage starters above 7.2 kV up to 13.8 kV.

6

Enclosures

Available in a variety of styles to meet most applications, enclosure types include:

NEMA 1 non-gasketed

NEMA 1A gasketed

NEMA 2 drip-proof

NEMA 12 dust-tight

NEMA 3R non-walk-in

NEMA 3R walk-in

External finish is ANSI 61 light gray polyester, electrostatically applied. Special colors and finishes are optionally available.

Compartment segregation

Each Series 81000 controller assembly consists of three areas completely segregated from one another:

Contactor compartment

Power bus system (high-voltage)

Low-voltage section.

A standard vertical structure consists of three 30" (762 mm) high compartments. One, two or three controllers (depending on rating) may be included in one structure.

When three controllers are required, the horizontal bus (including ground bus) is mounted in an additional top-mounted 10" (254 mm) (13" (330 mm) for 3,000 A) high bus compartment. An optional configuration using two 45" (1,143 mm) high compartments with top-mounted bus is also available to comply with American Petroleum Institute specifications.

A 15kV FVNR structure consists of three vertical structures. The overall controller dimensions are 72" (1,828 mm) wide, 48" (1,219 mm) deep and 90" (2,186 mm) high, without main bus. The incoming cable section is located on the right, while the outgoing cable section is located on the left. Both cable sections are 18“ (457 mm) wide. The center section includes the drawout fuse-carriage, stationary main contactor, low-voltage compartment and a 1.0 kVA fixed-mounted CPT.

Construction

Figure 1: Series 81000 drawout controller compartment segregation. Unit is not complete and is shown for illustrative purposes only.

Grounded steel barriers between power bus and vacuum contactors

Low-voltage or controller compartment

Shutters

Steel barrier between compartments

A 15 kV SSRVS structure consists of three vertical sections. The overall controller dimensions are 96" (2,438 mm) wide, 66" (1,677 mm) deep and 90" (2,186 mm)high, without main bus. The SCR chassis units are located in the two sections on the left end, which also includes the low- voltage compartment, a 1.0 kVA fixed-mounted control power transformer and the termination space for the outgoing load-side cables. The third section houses the drawout fuse-carriage, as well as the stationary main and bypass contactors and the termination space for the incoming power cables.

Main bus can be provided on 15 kV FVNR and 15 kV SSRVS controllers, using a top-mounted main bus housing. This adds 15" (381 mm) to the height of the structure. The main bus is available in 1,200 A, 2,000 A or 3,000 A ratings.

7

Construction

Figure 2: Low-voltage door-in-door compartment for panel devices

Figure 3: Main and vertical bus construction (shown with optional insulation). Transitions to type GM-SG 5 kV-15 kV switchgear are available.

Construction

Power bus

Power bus is isolated behind grounded steel barriers. Automatic shutters are provided on drawout controllers to cover the line-side bus stabs whenever a starter door is opened or the drawout carriage is in the disconnect position. Horizontal bus ratings range from 1,000 A through 3,000 A and are detailed in Table 3. Vertical tap buses in each section are rated 360 A, 540 A or 720 A, depending on the application. The standard bus material is silver-plated copper bus. Tin-plating is available as an option. Insulated bus with boots are available as options.

Low-voltage compartment (up to 7.2kV)

All active starter compartment front panels are provided with a "door-in-door" for access to the controller low-voltage area. Devices normally mounted in this section include the Siemens 9350 power meter, overload relay, ammeter, control relays, timing relays, pushbuttons, indicating lights, etc. Location within this section isolates the devices from any source of high voltage and allows access to these control compartments without interrupting service. Terminal blocks for control circuit wiring terminations are also accessible in this compartment. When extensive metering or special protective devices are required, the upper 30" (762 mm) high compartment can be used as a separate low-voltage compartment in addition to the "door-in-door" low-voltage compartment associated with each individual controller.

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Bus type

Continuous amperes (A)

Conductor size in inches (mm)

Conductor material

Current density (A/in2)

Main horizontal 1,000 0.25 (6) x 3.0 (76) Copper 1,333

1,200 0.375 (10) x 3.0 (76) Copper 1,067

2,000 Two 0.375 (10) x 3.0 (76) Copper 889

3,0001 Three 0.50 (13) x 3.0 (76) Copper 667

Vertical 300 (15 kV) 0.25 (6) x 2.0 (51) Copper 600

360 0.25 (6) x 1.0 (25) Copper 1,440

540 0.25 (6) x 1.5 (38) Copper 1,440

720 0.50 (13) x 2.0 (51) Copper 720

Ground 600 0.25 (6) x 2.0 (51) Copper 1,200

Interlocking

A combination of mechanical and electrical interlocks are included to:

Prevent inward and back movement of the drawout carriage (isolation switch), unless the contactor is open

Prevent the opening of the high-voltage compartment door, unless the drawout carriage (isolation switch) is in the disconnect position

Prevent the forward movement of the drawout carriage (isolation switch) to the connected position, unless the high-voltage compartment door is closed.

Construction

Table 3: Bus ratings

Footnote:1. 3,000 A bus must be located on

top of unit in 13” (330 mm) top hat (15” (381 mm) for 15 kV).

Drawout controllers isolation disconnect (drawout mechanism)

Series 81000 controllers use the complete contactor (or fuse carriage drawout assembly for 720 A or 15 kV controllers) as the high-voltage isolation switch, as described in NEMA ICS 3-2005, Part 1, clause 7.2.c and UL-347-2009, clause 5.202.2. Horizontal forward and back movement of the drawout assembly simultaneously opens and closes the line and load disconnect contacts.

Because both line-side and load-side terminals are disconnected, there is no need for grounding the load-side terminals in the open position. Non-conducting glass-polyester barriers (shutters) completely isolate the stationary-line terminals. The shutter mechanism is positively driven by the same linkage mechanism that moves the drawout carriage from the connected to the disconnected position.

The drawout operation is a simple one-step process. After the contactor is open (or de-energized), move the racking handle to the "OFF" position (disconnected), open the starter door and the contactor is ready to be rolled out of the compartment.

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CPT kVA

Primary fuse rating

Secondary fuse rating

2.3 kV 3.3 kV 4.0 kV 4.6 kV 6.6 kV 115 V 230 V

0.75 1E 1E 1E 0.5E 1E 10A 6.25A

2.0 3E 2E 2E 2E 1E 20A 10A

3.0 4E 3E 2E 2E 2E 30A 15A

Construction

Test circuit

Each Series 81000 controller is provided with a built-in test circuit for operation of the contactor from a remote source of control power, when the "test-run" switch is set at the "test" position. This circuit will function only if the contactor is disconnected from its primary source of power and the "test-run" switch is set at the "test" position. It allows maintenance and operation of the main contactor and low-voltage control circuitry without requiring energizing the motor, or disconnecting any load cables, and prevents back-energization of the CPT.

Figure 4: Control power transformer and fuses

Figure 5: Blown fuse-trip bar option

Table 4: CPT fuse sizes

Control power transformers (CPTs)

The basic controller includes, as standard, a 0.75 kVA CPT mounted on the drawout carriage. Oversize ratings are available up to 3 kVA, mounted on the drawout carriage.

Blown fuse-trip option

A blown fuse-trip option can be supplied to open the contactor in the event of a blown primary power fuse.

A normally closed (NC) contact in the closing coil circuit opens when any primary power fuse operates, causing the contactor to open. A blown fuse-trip option is not available for 15 kV controllers. For SSRVS controllers, blown fuse tripping is accomplished in the protective software of the SSRVS unit.

Latched contactors

A latched version of the contactor with manual or electrical release is available for feeder applications.

The mechanical latch keeps the contactor closed even when power to the coil has been removed. A typical application is as a transformer feeder where it is not desired that the controller open during a momentary loss of primary power.

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Construction

Load-break switches (LBS) (up to 7.2 kV)

Load-break switches rated 400 A, 600 A or 1,200 A can be incorporated into the Series 81000 as main disconnect or feeder devices. The switches are manually operated, quick make, quick break disconnect switches. The switch door includes a viewing window for visual inspection of the switch blade status. The door and switch operating handle are mechanically interlocked to ensure the door cannot be opened with the switch closed and the switch cannot be closed with the door open. In addition, the switch is covered with a plexiglass barrier. The switches are fixed mounted and can be equipped with fixed-mounted fuses.Unfused switches or fused switches with fuses up to 900E will fit in a full height 36" (914.4 mm) wide section. 1100E and 1350E fuses require an additional 36” (914.4 mm) wide section. Optionally, the 400 A feeder switches will fit in a 30" (762 mm) high controller compartment. Optional accessories for the load-break switches include auxiliary contacts (2 NO and 2 NC), shunt trip, blown fuse indicator or motor operator. The switch ratings are detailed in Table 5.

Figure 6: Load-break switch (LBS)

Table 5: Switch ratings

Ratings Switch type

400 A 600 A 1,200 A

BIL 60 kV 60 kV 60 kV

Unfused interrupting 400 A 600 A 1,200 A

Fused interrupting 50 kA 50 kA50 kA (31 kA for 1100E and 1350E)

Continuous amperes 400 A 600 A 1,200 A

Fault close and momentary rms kA

22.5 kA 40 kA 61 kA

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Construction

Table 6: Starting characteristics of controller type expressed in percent rated value

Starter type

Motor voltage

Motor current

Line current

Torque

FVNR 100 100 100 100

RVAT 80% tap 80 80 64 64

RVAT 65% tap 65 65 42 42

RVAT 50% tap 50 50 25 25

RVPR 80% tap 80 80 80 64

RVPR 65% tap 65 65 65 42

RVPR 50% tap 50 50 50 25

Figure 7: RVAT - main vacuum contactor compartment

Figure 8: RVAT - autotransformer and start contactor compartment

Reduced-voltage starters

For loads requiring reduced-voltage starting, the Series 81000 design offers three options. Primary reactor (RVPR), autotransformer (RVAT) and solid-state (SSRV) controllers are available as drawout controllers.

Reduced-voltage primary reactor (RVPR) controllers

Reduced-voltage primary reactor controllers consists of a main contactor, run contactor and a primary reactor with 80, 65 and 50 percent voltage taps, factory set at 65 percent. The standard reactors are NEMA medium duty-rated for three 30-second starts per hour, heavy-duty starting reactors are available for special applications. The primary reactors are sized based on the motor locked rotor current.

Reduced-voltage autotransformer (RVAT) controllers

Reduced-voltage autotransformer controllers consist of a main contactor, shorting contactor, run contactor and an autotransformer with 80, 65 and 50 percent voltage taps, factory set at 65 percent. The standard autotransformers are NEMA medium duty-rated for three 30-second starts per hour. Heavy-duty autotransformers are available for special applications. The autotransformers are sized based on the locked rotor current of the motor. Starting sequence is closed transition.

12

Construction

Solid-state, reduced-voltage (SSRV) controllers

Solid-state, reduced-voltage controllers consist of a main contactor, SCR chassis and a line-start rated bypass contactor. The SSRV starter provides the most flexible starting options, offering selectable current or voltage ramps. For emergency full-voltage starting, the bypass contactor can be used as an across-the-line starter by changing a control switch position. As an option, the starter can be equipped with a permanent emergency across-the-line starting option including an additional set of current transformers, normal/emergency selector switch and a bi-metal overload relay. Repositioning power cables for this option is not required.

Benefits of solid-state, reduced-voltage starting:

Reduce torque shock damage

Increase motor and drive train reliability

Limit starting kVA

Maintain future system flexibility

Soft start and soft stop pumps to control water hammer

Reduce hydraulic/mechanical problems.

The SCR logic control incorporates the following standard protection, metering and parameter adjustments:

Initial voltage - 10 to 50 percent nominal voltage (5 to 85 percent optional)

Current limit -100 to 400 percent of motor full-load amperes (FLA) (100 to 700 percent optional)

Acceleration time -1 to 30 seconds (1 to 90 seconds optional)

Deceleration time - 0 to 30 seconds (0 to 90 seconds optional)

Pump control - four closed-loop start and stop curves

Pulse (kick) start

<1 second 70 to 700 percent of motor FLA

≥1 second 70 to 400 percent of motor FLA

Under voltage trip - 50 to 90 percent, adjustable trip delay 1 to 10 seconds

Over voltage trip - 110 to 125 percent, adjustable trip delay 1 to 60 seconds

Under current (load loss) trip - 20 to 90 percent of motor FLA (1%), adjustable trip delay 1 to 40 seconds

Allowable restarts - 0 to 10, adjustable time inhibit

Electronic overload class - 5 to 30 ANSI or IEC

Electronic shear pin - trips within one cycle of setpoint

Phase loss - one or more phases missing

Phase sequence - phase sequence incorrect

Shorted solid-state silicon-controlled rectification (SCR) internal fault detected

Connection error - internal fault/motor connection

Starter over temp - heatsink over temperature

Elapsed time meter

Maximum current

Starting time for last start

Total number of starts

Cause of last fault

Percentage of current at last trip

Total number of trips

RS-485 with Modbus remote terminal unit (RTU) protocol

Opto-isolated inputs

Non-volatile memory for programming and faults

Programmable in four languages.

Figure 9: Solid-state, reduced-voltage controller

13

Construction

Current transformers (CTs)

Starters using conventional overload relays are provided with current transformers mounted in the cable termination area of the controller compartment. These are used to drive the overload relay, ammeter or other devices that require a current input.

CT selection takes into consideration the burden and accuracy requirements that are appropriate for the specified instru-mentation and protective devices. The secondary current rating is always 5 A. The primary current rating is selected so that the actual secondary current will be between 3 A and 4 A with the motor (or other load) operating at full load.

Applications at 7.2 kV or below use the type 81CT10 CT with standard accuracy rating. Higher accuracy class CT (type 81CT20) or higher burden CTs (type 81CT50) are also available as options.

Applications above 7.2 kV use type MD CTs.

Refer to Tables 7-10 for details.

Figure 10: Type 3RB overload relay

Figure 11: Type 3RU overload relay

Figure 12: Current transformers and cable termination area

Overload protection - types 3RU or 3RB

Running overcurrent (overload) protection for the motor must also be provided according to NEMA standards. This overload (or longtime) protection can be provided by the Siemens type 3RU (OLR) bimetallic thermal overload relay. This three-phase adjustable relay provides inherent single-phase protection and phase unbalance protection with NEMA class 10 tripping characteristics, providing optimum protection for motors having acceleration times of six seconds or less and allowable hot locked rotor times of five seconds or more. It is equipped with an isolated normally open contact to actuate a remote alarm in the event of an overload trip.

For applications that require longer acceleration times, Siemens offers the type 3RB solid-state overload relay, with class 10, 20 or 30 tripping characteristics.

For unusual applications, solid-state or switchgear type overcurrent relays are available.

14

Ratio 60 Hz metering accuracy at burden Relay class

Primary cable turns

Cable size AWG

Used on

B0.1 B0.2 B0.5 B0.9

30:5 0.6 0.6 1.2 2.4 C08 Five #8 360 A

40:5 0.3 0.6 0.6 1.2 C10 Five #8 360 A

50:5 0.3 0.6 0.6 1.2 C10 Four #6 360 A

75:5 0.3 0.3 0.3 0.6 C10 Four #6 360 A

100:5 0.3 0.6 0.6 1.2 C10 Two #2 360 A

150:5 0.3 0.3 0.3 0.6 C10 Two #2 360 A

200:5 0.3 0.6 0.6 1.2 C10 One 2/0 360 A

250:5 0.3 0.3 0.6 1.2 C10 One 2/0 360 A

300:5 0.3 0.3 0.3 0.6 C10 One 2/0 360 A

400:5 0.3 0.3 0.3 0.3 C10 One 4/0 360 A

500:5 0.3 0.3 0.3 0.3 C20 One 4/0 360 A

600:5 0.3 0.3 0.3 0.3 C20 One 4/0 360 A

500:5 0.3 0.3 0.3 0.3 C20 One 4/0 720 A

600:5 0.3 0.3 0.3 0.3 C20 One 4/0 720 A

750:5 0.3 0.3 0.3 0.6 C20 One 4/0 720 A

800:5 0.3 0.3 0.3 0.3 C20 One 4/0 720 A

1,000:5 0.3 0.3 0.3 0.3 C10 One 4/0 720 A

Table 7: Relay class C10 standard CTs, Siemens type 81CT10

Construction


Primary cable turns

Cable size AWG

Used on

B0.1 B0.2 B0.5 B0.9

25:5 0.6 0.6 1.2 2.4 C20 Four #6 360 A

30:5 0.6 0.6 1.2 2.4 C20 Five #6 360 A

40:5 0.6 0.6 0.6 1.2 C20 Five #6 360 A

50:5 0.6 0.6 1.2 2.4 C20 Two #6 360 A

75:5 0.6 0.6 1.2 2.4 C20 Two #6 360 A

100:5 0.6 0.6 1.2 2.4 C20 One #2 360 A

150:5 0.6 0.6 1.2 2.4 C20 One #2 360 A

200:5 0.6 0.6 0.6 1.2 C20 One 2/0 360 A

250:5 0.3 0.3 0.6 1.2 C20 One 2/0 360 A

300:5 0.3 0.3 0.3 0.6 C20 One 2/0 360 A

400:5 0.3 0.3 0.3 0.6 C20 One 4/0 360 A

600:5 0.3 0.3 0.3 0.3 C20 One 4/0 360 A

600:5 0.3 0.3 0.3 0.3 C20 One 4/0 720 A

750:5 0.3 0.3 0.3 0.3 C20 One 4/0 720 A

800:5 0.3 0.3 0.3 0.3 C50 One 4/0 720 A

1,000:5 0.3 0.3 0.3 0.3 C50 One 4/0 720 A

Table 8: Relay class C20 optional CTs, Siemens type 81CT20

15

Construction


Primary cable turns

Cable size AWG

Used on

B0.1 B0.2 B0.5 B0.9

25:5 0.3 0.6 1.2 1.2 C50 Six #6 360 A

30:5 0.6 0.6 1.2 2.4 C50 Five #6 360 A

40:5 0.3 0.3 0.6 0.6 C50 Five #6 360 A

50:5 0.3 0.6 1.2 1.2 C50 Three #6 360 A

75:5 0.3 0.6 1.2 1.2 C50 Two #6 360 A

100:5 0.3 0.3 0.6 0.6 C50 Two #2 360 A

150:5 0.3 0.6 1.2 1.2 C50 One #2 360 A

200:5 0.3 0.3 0.6 0.6 C50 One 2/0 360 A

250:5 0.3 0.3 0.6 1.2 C50 One 2/0 360 A

300:5 0.3 0.3 0.6 0.6 C50 One 2/0 360 A

400:5 0.3 0.3 0.3 0.3 C50 One 4/0 360 A

600:5 0.3 0.3 0.3 0.3 C50 One 4/0 360 A

600:5 0.3 0.3 0.3 0.3 C50 One 4/0 720 A

750:5 0.3 0.3 0.3 0.3 C50 One 4/0 720 A

800:5 0.3 0.3 0.3 0.3 C50 One 4/0 720 A

1,000:5 0.3 0.3 0.3 0.3 C50 One 4/0 720 A

Table 9: High-burden optional CTs, Siemens type 81CT50

Ratio 60 Hz metering accuracy at burden Relay classB0.1 B0.2 B0.5 B0.9

100:5 2.4 ---- ---- ---- C15

150:5 0.6 2.4 ---- ---- C20

200:5 0.6 1.2 ---- ---- C25

250:5 0.6 1.2 2.4 ---- C35

300:5 0.6 0.6 1.2 2.4 C40

400:5 0.3 0.6 1.2 2.4 C60

500:5 0.3 0.3 0.6 1.2 C75

Table 10: Type MD torrodial standard-accuracy CTs for 15 kV controllers

16

Construction

Voltage transformers (VTs)

Optional voltage transformers are available in fixed-mounted or trunion-mounted (roll-out for 7.2 kV and above) versions. Trunion-mounted VTs typically require a 30" (762 mm) high drawout compartment, while fixed-mounted VTs can be mounted in the upper low-voltage compartment and are barriered to prevent accidental contact (refer to Table 11 for VT ratings).

Distribution transformers

For larger auxiliary loads that need to be fed from the Series 81000 medium-voltage control center, NEMA standard distribution transformers can be installed. These are available in single-phase sizes from 3 kVA to 25 kVA and in three-phase sizes from 9 kVA to 45 kVA. Transformers include standard primary taps (four 2.5 percent taps) and class H insulation rated 180 °C temperature class. The distribution transformers are provided with primary fuse protection and a molded-case circuit breaker on the secondary side. The transformers are stationary mounted and are rated 30 kV BIL. As standard, the primary fuses are fixed mounted. Optional trunion-mounted fuses are also available. The fuse trunion is mechanically interlocked with the secondary molded case circuit breaker to ensure that secondary loads are de-energized prior to operation of the trunion.

Transformers will require a 30" (762 mm) high controller compartment, an additional 30" (762 mm) height is required for the optional fuse trunion.

Auxiliary contacts

All vacuum contactors are supplied with two NO and two NC auxiliary contacts available for customer use. Extra contacts are available through the use of the master relay (MR) or extra control relays.

Figure 13: Voltage transformer (trunion-mounted shown)

Voltage class

Ratio Accuracy class at 120 V secondary

VA thermal rating1

BIL rating

W, X Y X

5 kV 2,400:120 0.3 0.6 1.2 600 45 kV

5 kV 4,200:120 0.3 0.6 1.2 600 45 kV

5 kV 4,800:120 0.3 0.6 1.2 600 45 kV

7 kV 6,900:120 0.3 0.3 1.2 1,500 75 kV

7 kV 7,200:120 0.3 0.3 1.2 1,500 75 kV

15 kV 12,000:120 0.3 0.3 1.2 1,500 95 kV

15 kV 14,400:120 0.3 0.3 1.2 1,500 95 kV

Table 11: Voltage transformer ratings ‒ fixed- or trunion-mounted

Footnote:1. 30 °C ambient.

17

Motor protection

Motor protection options

Drive motors often play a decisive role in the success of a production process. Motor breakdowns frequently result in damage to driven equipment and production shutdowns. The resulting cost significantly exceeds the cost of repairing the motor. Optimum design of the motor protection ensures that damage from thermal overload is minimized with little reduction in service life. Secondary faults are minimized in the event of short circuits, ground faults and winding faults. The spectrum extends from small medium-voltage motors with an output of a few hundred horsepower to large medium-voltage motors with outputs measured in thousands of horsepower. Protection system design must be based on the rating of the motor, the importance of the drive for the technological process, the operating conditions and the requirements of the motor manufacturer.

Commonly specified motor protection functions and motor protective relay selection tables are provided in Table 12.

Figure 14: Type 7SK80 protective relay

Fault Protection ANSI number

Stator thermal overload Stator thermal overload protection 49

Rotor thermal overload during start

Excessive starting time or blocked rotor

Too frequent

Motor starting time supervision

Restart inhibit

48

66, 49R

Ground fault Ground fault protection 50G, 64G, 67G

Short circuit Overcurrent time protection

Current differential protection

50, 51

87

Phase loss Negative sequence protection 46

Bearing overload Temperature sensors (RTDs) 38

Overheating of plan on unloaded drives (pumps, compressors) Undercurrent protection 37

Undervoltage Undervoltage protection 27

Induction operation (of a synchronous machine) Underexcitation (loss of field) protection 40

Table 12: Protection functions for various types of motor faults

18

Motor protection

Induction machine Synchronous machine

up to 1,000 HP up to 2,000 HP

Type 7SK80 or 7SJ61

Basic motor protection plus 14, 27, 50BF, 51M and 86

Control functions

Additional input/outout (I/O)

Flexible protection functions

Larger human machine interface (HMI) display

Up to 12 external resistance temperature detectors (RTDs)1

Type 7UM61

Basic motor protection plus 27/59, 32, 51V, 60, 67 and 81U/O

Control functions

Additional I/O

Larger HMI display

Up to 12 external RTDs1

1,000 HP - 2,500 HP Over 2,000 HP

Type 7SK80 or 7SJ61

Basic motor protection plus 14, 27, 50BF, 51M and 86

Control functions

Additional I/O

Flexible protection functions

Larger HMI display


Type 7UM61

Basic motor protection plus 32, 27/59, 51V, 60, 67 and 81U/O for variable speed applications

Control functions

Additional I/O

Larger HMI display


Type 7UM62

Basic motor protection plus 24, 27/59, 32, 40, 50BF, 51V, 67, 81R, 81U/O and 87

Control functions

Additional I/O, transducer outputs

Larger HMI display


Over 2,500 HP

Type 7UM61

Basic motor protection plus 32, 27/59, 51V, 60, 67 and 81U/O

Control functions

Additional I/O

Larger HMI display


Table 13: Motor protection selection

Footnote:1. Optional with up to five RTD inputs in protective relay (type 7SK80 only) or up to 12 RTDs using two type 7XV5662 RTD units.

19

Motor protection

Function Description Type

7SJ60 7SK80 7SJ61 7SJ62 7UM61 7UM62

50/51 Overcurrent instaneous/time Yes Yes Yes Yes Yes Yes

50N/51N Ground overcurrent instaneous/time Yes Yes Yes Yes Yes Yes

51M Load jam ---- Yes Optional Yes ---- ----

51V Voltage controlled time ---- ---- ---- ---- Yes Yes

37 Undercurrent ---- Yes Yes Yes ---- Yes

87 Differential ---- ---- ---- ---- ---- Yes

87N Ground differential ---- ---- Yes Yes ---- ----

50BF Breaker failure ---- Yes Yes Yes Yes Yes

46 Phase balance (negative sequence) current Yes Yes Yes Yes Optional Optional

67 Directional overcurrent ---- ---- ---- Yes Yes Yes

67N Directional ground overcurrent ---- Optional ---- Yes Yes Yes

32 Directional (reverse) power ---- Optional ---- ---- Yes Yes

27/59 Under/over voltage ---- Optional ---- Yes Yes Yes

47 Phase rotation ---- Optional ---- Yes Yes Yes

81U/O Over/under frequency ---- Optional ---- Yes Yes Yes

59N Ground overvoltage ---- Optional ---- Yes Yes Yes

40 Under excitation (loss of field) ---- ---- ---- ---- Optional Yes

24 Over excitation (volts per hertz) ---- ---- ---- ---- Yes Yes

48/14 Incomplete sequence/underspeed Yes Yes Optional Yes Optional Optional

66 Restart inhibit ---- Yes Optional Yes Optional Yes

86 Lockout ---- Yes Yes Yes Yes Yes

38 RTD monitoring ---- Optional1 Optional1 Optional1 ---- Optional1

---- I/O binary inputs/binary outputs 3/1 3/5 3/4 8/8 7/12 7/15

Table 14: Protection functions for various types of motor faults

Footnote:1. Optional with up to five RTD inputs in protective relay (type 7SK80 only) or up to 12 RTDs using two type 7XV5662 RTD units.

20

The type 97H3 drawout vacuum contactor consists of:

A low-voltage section containing the main coil drive and auxiliary contacts

A medium-voltage section housing the vacuum interrupters

A support structure providing mounting for the power fuses, control transformer and primary fuses and drawout finger assemblies.

Since arc interruption is accomplished completely within the vacuum interrupters, arc chutes, blowout coils and pole plates are not required. Stationary and movable power contacts are located inside the vacuum interrupters. A stainless steel bellows attached to the movable contact ensures a complete seal and vacuum integrity. Because the contacts are sealed in the vacuum interrupter and have only a short stoke, long mechanical and electrical life is achieved.

Siemens type 97H3 series vacuum contactor is mechanically interchangeable with the previous type 94H3 series. The type 96H3 series is mechanically interchangeable with the previous type 93H3 series contactors.

Type 97H3 360 A drawout vacuum contactor

This vacuum contactor forms the centerpiece for the medium-voltage controller. It is a drawout assembly that racks onto or off of the primary stabs in the stationary housing. The supporting base consists of a bolted steel frame. The pushrods, contact support blocks and other insulating parts are constructed of glass polyester. All insulating material that is in contact with high-voltage current carrying parts is flame retardant and track resistant.

The distinctive features of the Siemens type 97H3 vacuum contactor is high reliability, long service life, compact dimensions and the ability to deal with most motor switching duties. They are suitable for loads of many types, including motors, transformers, capacitors and resistive loads.

In addition to the advantages of long mechanical and electrical life with low maintenance, the contacts are resistant to adverse atmospheric environments and are light in weight.

The vacuum contactor with single- or double-barrel power fuses can be installed in Series 81000 class E2 controllers of either one-, two- or three-high construction.

Vacuum contactors

Figure 15: Type 97H3 360 A fused vacuum controller - front view

Figure 16: Type 97H3 360 A fused vacuum controller - rear view

21

Vacuum contactors

Type 96H6 720 A vacuum contactor

The type 96H6 720 A vacuum contactor employs a similar philosophy to the drawout type 97H3 360 A contactors, except that only the primary current- limiting fuses are mounted on the drawout carriage. The vacuum contactor is stationary mounted, connected to the load stabs of the drawout cell with cables rated for 720 A. The use of the drawout fuse carriage preserves all of the advantages of drawout construction.

Figure 17: Type 96H6 720 A fuse carriage - front view

Figure 18: Type 96H6 720 A fuse carriage - rear view

Figure 19: Typical control schematic for FVNR squirrel-cage controller

LSI

CXFU

Run Test

C BA

6

Stop 1 2Start

RSI TFU

115 V or 230 V CPT

X1X2

115 V or 230 V test power

Push to test

DC drive unit

C

12

L1

RLL2C

MROL

8 9

3

MR 10 A 14 M 13 B11

MR 15 F A1 A2 D 13

M CC

M CC

1 1 2 2

Additional auxiliary contacts

M M M M84 83 43 44 21 22 32 31

G H I J K L M N

12 13 14 15 16 17 18 19

Legend:CPT = Control power transformer CXFU = Fuse for CPT secondary LSI = Line switch interlock M = Main vacuum contactor MR = Master relay M CC = Main vacuum contactor magnet coil RL = High-voltage light RSI = Racking switch interlock TFU = Fuse for test power

Test switch contact development

Run Test

A X

B X

C X

X = Contacts closed

22

Vacuum contactors

Item Magnetically held Latched

Rated voltage 7,200 V 7,200 V

Rated current 360 A 360 A

Permissible switching frequency 1,200/hour 60/hour

Mechanical life (number of operations) 1,000,000100,000 (latch mechanism); 1,000,000 contactor

Electrical life (number of operations) 250,000100,000 (latch mechanism); 250,000 contactor

Closing time 150 ms 150 ms

Minimum closing command duration 300 ms 300 ms

Opening time2 325 +/- 75 ms3 > 45 ms

Arcing time 10 to 20 ms 10 to 20 ms

Pick-up voltage AC or DC, nominal 85% rated (hot); 70% rated (cold) 85% rated (hot); 70% rated (cold)

Drop-out voltage AC or DC, nominal 74 +/- 2 V ----

Minimum trip voltage ---- 85% rated voltage

Rated control voltage 115 to 240 V (50/60 Hz); 125 to 250 Vdc 115 to 240 V (50/60 Hz); 125 to 250 Vdc

Coil circuit inrush 600 W 600 W

Coil circuit holding 90 W ----

Tripping (latched opening release) ---- 500 W

Auxiliary contact arrangement 2 NO + 2 NC 2 NO + 2 NC

Auxiliary contact rating

Continuous current

AC making/breaking

DC making/breaking

10 A, 600 V (NEMA class A600)

10 A

7,200 VA not over 60 A/

720 VA not over 6 A

10 A@24 V; 5 A@110 V; 0.9 A@125 V


10 A


720 VA not over 6 A

10 A@24 V; 5 A@110 V; 0.9 A@125 V

Maximum interrupting current (three operations)

5,000 A@5 kV; 4,200 [email protected] kV 5,000 A@5 kV; 4,200 [email protected] kV

Short-time current (rms)

30 seconds

1 second

2,160 A

5,400 A

2,160 A

5,400 A

Standard service altitude 200 m below to 1,000 m above sea level 200 m below to 1,000 m above sea level

Optional service altitude 4,500 m1 4,500 m1

BIL 60 kV5 60 kV5

Dielectric strength (60 Hz) 4 4

Control voltages AC and DC 120/240 Vac and 125/250 Vdc 120/240 Vac and 125/250 Vdc

Control voltage options (latched opening release)

----24 Vdc; 32 Vdc; 48 Vdc; 125 Vdc; 250 Vac; 115 Vac; 240 Vac

Table 15: Operating data for type 97H3 vacuum contactor

Footnotes:1. High-altitude vacuum contactor required for

altitude over 1,000 m. Maximum altitude 4,500 m.

2. Opening time = time from instant of application of the OPEN control pulse to the instant of contact separation.

3. Fast dropout option available.4. 2.0 kV + (2.25 x rated voltage) = 18.2 kV for

7.2 kV rated voltage.

5. Phase-ground and phase-phase, with vacuum contactor closed.

23

Vacuum contactors

Item Magnetically held Latched

Rated voltage 7,200 V 7,200 V

Rated current 720 A 720 A

Permissible switching frequency 600/hour 300/hour

Mechanical life (number of operations) 1,000,000 200,000

Electrical life (number of operations) 200,000 200,000

Closing time 60 to 70 ms 60 to 70 ms

Minimum closing command duration 300 ms 300 ms

Opening time4 30 to 35 ms 30 to 35 ms

Arcing time 10 ms or less 10 ms or less

Pick-up voltage AC or DC, nominal 85% rated (hot); 70% rated (cold) 85% rated (hot); 70% rated (cold)

Drop-out voltage AC or DC, nominal 50% rated (hot); 40% rated (cold) ----

Minimum trip voltage ---- 85% rated voltage

Rated control voltage 115 to 240 V (50/60 Hz); 125 to 250 Vdc 115 to 240 V (50/60 Hz); 125 to 250 Vdc

Coil circuit inrush 800 VA 875 W

Coil circuit holding 48 VA ----

Tripping (latched opening release) ---- 600 W

Auxiliary contact arrangement 3 NO + 3 NC 3 NO + 3 NC


Continuous current

AC making/breaking

DC making/breaking


10 A


720 VA not over 6 A

60 W (L/R 150 ms)


10 A


720 VA not over 6 A

60 W (L/R 150 ms)

Maximum interrupting current (three operations)

7,200 A 7,200 A


30 seconds

1 second

4,320 A

10,800 A

4,320 A

10,800 A

Standard service altitude <1,000 m <1,000 m

Optional service altitude 2 2

BIL 60 kV3 60 kV3

Dielectric strength (60 Hz) 1 1

Control voltages AC and DC 115/240 Vac; 125/250 Vdc 115/240 Vac; 125/250 Vdc

Control voltage options (latched opening release)

---- 24 Vdc; 32 Vdc; 48 Vdc; 125 Vdc; 250 Vac

Table 16: Operating data for type 96H6 vacuum contactor

Footnotes:1. 2.0 kV + (2.25 x rated voltage) = 18.2 kV for

7.2 kV rated voltage.2. Consult factory.



24

Vacuum contactors

Item Magnetically held

Rated voltage 13,800 V

Rated current 300 A

Permissible switching frequency 60/hour

Mechanical life (number of operations) 1,000,000

Electrical life (number of operations) 500,000

Closing time 40 to 60 ms

Minimum closing command duration 300 ms

Opening time2 <100 ms

Arcing time 11 ms or less

Pick-up voltage AC or DC, nominal 85% rated (hot); 70% rated (cold)

Drop-out voltage AC or DC, nominal <70% E

Rated control voltage 115 to 240 V (50/60 Hz); 125 to 250 Vdc

Coil circuit inrush 1,200 W

Coil circuit holding 200 W

Tripping (latched opening release) ----

Auxiliary contact arrangement 4 NO + 4 NC; 6 NO + 6 NC; 8 NO + 8 NC


Continuous current

Switching ratings (ac) (AC-11)

Switching ratings (dc) (DC-11)


10 A

10 A@48 V; 9 A@60 V; 5 A@110 V; 2.5 A@220 V

10 A@24 V; 9 A@48 V; 7 A@60 V; 4 A@110 V; 2 A@220 V

Maximum interrupting current (three operations) 3,000


30 seconds

1 second

4,800 A

8 kA

Standard service altitude 50 m below to 1,000 m above sea level

Optional service altitude 4,500 m1

BIL 95 kV5

Dielectric strength (60 Hz) 3

Control voltages AC and DC 120/240 Vac; 125/220 Vdc

Control voltage options (latched opening release) ----

Table 17: Operating data for type 3TL714 vacuum contactor

Footnotes:1. High-altitude vacuum contactor required for

altitude over 1,000 m. Maximum altitude 4,500 m.


3. 2.0 kV + (2.25 x rated voltage) = 33.0 kV for 13.8 kV rated voltage.

4. Vacuum contactor only. Ratings for installation are determined by fuses.


25

Fuse applications

For non-motor loads

The principal application for ANSI "E" rated fuses in Series 81000 controllers is for non-rotating loads, such as transformer feeders. The following tabulation may be used for estimating the "E" rated fuse appropriate for a particular three-phase transformer application.

Fuse ratings higher or lower than those listed in Table 18 may need to be employed if the transformer has unusual magnetizing (inrush) current characteristics, or for proper coordination with the secondary protective device (for example, secondary fuse, low-voltage circuit breaker trip device, overcurrent relay, etc.). Transformer overload capability may also have a bearing on fuse selection. However, this table is accurate for most typical transformer feeder applications.

The "E" rated fuses have the same interrupting current ratings as the type FM or A720R "R" rated fuses. Both are rated at 50 kA symmetrical and 80 kA asymmetrical interrupting. High continuous current fuses (for instance, 600E through 1350E) are type CLE-750, and interrupting current is 31.5 kA to 40 kA depending on fuse size.

All medium-voltage controllers employ current-limiting fuses for short-circuit protection. The term "current limiting" is derived from the operating characteristics of the fuse. Figure 20 shows graphically how, for maximum fault levels, the fuse operates within the first one-quarter cycle of short-circuit current. This limits the energy "let thru" well below peak values, thus providing "current limitation."

The type 3TL71 vacuum contactor is intended for motor applications and is not available in a mechanically latched version. Therefore, transformer protection fuses for this contactor are not shown in Tables 18-19.

Figure 20: Current limiting effect

Current

Fuse melting

Arcing

Wave of available symmetrical short-circuit current

Ip = let-through current

26

Fuse applications

Transformer Fuse size1

kVA three-phase

2.4 kV 4.16 kV 4.8 kV 6.9 kV

45 25E 10E 10E ----

75 30E 15E 15E 10E

112.5 40E 20E 20E 15E

150 50E 30E 25E 20E

225 80E 40E 40E 25E

300 100E 65E 50E 40E

500 200E 100E 80E 65E

750 250E 150E 125E 100E

1,000 400E 200E 200E 125E

1,500 450E 300E 250E 200E

2,000 ---- 400E 350E ----2

2,500 ---- ---- 450E ----2

3,000 ---- ---- 450E ----2

Table 18: Typical fuse sizes for transformer protection

Table 19: Typical fuse sizes for motor protection

Footnote:1. Fuse sizes are based on 133

percent overload capacity, except 1,500 kVA at 2.4 kV, 2,500 kVA at 4.16 kV and 3,000 kVA at 4.8 kV.

2. Consult factory.

Maximum design voltage kV

Current designation

Continuous current at 40 °C

Minimum interrupting capability

Interrupting rating 50/60 Hz

5,080 2R (one barrel) 70 190 Single-phase 80 kA rms asymmetrical (210 MVA at 2.4 kV; 415 MVA at 4.8 kV)

3R 100 225

4R 130 330

6R 170 500

9R 200 740

12R 230 955

18R (two barrel) 390 1,440

24R 450 1,910

38R 600 3,000

57X (three barrel) 900 4,500

7,200 2R (one barrel) 70 190 Single-phase 80 kA rms asymmetrical (620 MVA at 7.2 kV)

3R 100 225

4R 130 330

6R 170 500

9R 200 740

12R 230 955

18R (two barrel) 390 1,440

24R 450 1,910

38R 600 3,000

48X 750 3,500

57X 900 4,500

27

Type FM or A720 fuses

Type FM or A720R fuses consist of a number of silver or copper elements surrounded by inorganics and enclosed in a durable synthetic insulating tube. Silver-plated copper ferrules form the conductive "cap" at each end of the fuse.

A mechanical indicator “pops-out” of the end of the ferrule if the fuse has operated. This provides a visual means for checking the condition of the fuse, and also acts to engage the optional blown fuse trip bar on the type 97H3 contactor.

Current designations 2R through 24R (38R and 57X for fuses on 720 A) are used to distinguish one fuse size from another within the same voltage rating. Ampere ratings are not used to identify medium-voltage fuses, since fuse selection involves many different variables. Among these are motor-locked rotor and running current,

acceleration time and the time-current characteristics of the overload relay used.

The fuses are installed on the top of the type 97H3 vacuum contactor or on the drawout fuse carriage used with the

type 96H6 vacuum contactor. No fuse pullers or special tools are required to install or replace the fuses.

Fuse applications

Starter fuse and current transformer (CT) information

Typical information on starter fuse and CT ratings is shown in Table 20. This information is based on typical motor data (NEMA B, Code F, 1.0 SF). Actual motor data may vary depending on motor manufacturer and design.

Actual fuse and CT ratings will be sized based on motor FLA, service factor, acceleration time and locked rotor information. Actual motor data is required for order entry.

Power factor correction capacitors (PFCCs) (optional)

PFCCs are available for installation in the Series 81000 controllers. Addition of PFCCs requires one-high design of starters. When PFCCs are provided, they are normally switched on and off with the motor with the exception of solid-state controllers.

Solid-state, reduced-voltage (SSRV) controllers require the addition of a separate switching contactor to switch the capacitors on after the bypass vacuum contactor has been energized. This requires an additional 24" (610 mm) wide section per SSRV. The optional PFCC switching contactor is available for other starter types as well.

PFCCs are provided in three-phase sets complete with primary fuses. Sizes range from 25 kVAr to 300 kVAr.

Complete motor data has to be provided for PFCC sizing, and the maximum allowable PFCC size has to be confirmed by the motor manufacturer.

Figure 21: Type FM fuses installed on a type 97H3 vacuum contactor

28

Fuse applications

Table 20: NEMA design B motor characteristics4

HP3 2.3 kV1 4.16 kV1 6.9 kV1 13.2 kV1

FLA2 Fuse size5

CT ratio

FLA2 Fuse size5

CT ratio

FLA2 Fuse size

CT ratio

FLA2 Fuse size5

CT ratio

60 16.5 2R 25:5 ---- ---- ---- ---- ---- ---- ---- ---- ----

75 19.7 2R 25:5 ---- ---- ---- ---- ---- ---- ---- ---- ----

100 25.8 2R 40:5 ---- ---- ---- ---- ---- ---- ---- ---- ----

125 31.0 3R 50:5 ---- ---- ---- ---- ---- ---- ---- ---- ----

150 36.6 3R 50:5 20.3 2R 40:5 ---- ---- ---- ---- ---- ----

200 47.3 4R 75:5 26.3 2R 40:5 15.9 2R 25:5 ---- ---- ----

250 58.3 4R 100:5 32.3 3R 50:5 21.0 2R 30:5 ---- ---- ----

300 69.6 6R 100:5 38.6 3R 75:5 24.5 2R 40:5 ---- ---- ----

350 81.0 6R 150:5 44.9 4R 75:5 29.0 3R 40:5 ---- ---- ----

400 91.1 9R 150:5 50.5 4R 75.5 32.5 3R 50:5 ---- ---- ----

450 102 9R 150:5 56.5 4R 75.5 36.0 3R 50:5 ---- ---- ----

500 113 9R 150:5 62.5 6R 100.5 40.0 3R 75:5 ---- ---- ----

600 134 12R 200:5 74.6 6R 100:5 48.0 4R 75:5 ---- ---- ----

700 156 12R 300:5 86.5 6R 150:5 56.0 4R 75:5 ---- ---- ----

800 177 12R 300:5 98.3 9R 150:5 63.0 6R 100:5 ---- ---- ----

900 199 18R 300:5 110 9R 150:5 67.5 6R 100:5 ---- ---- ----

1,000 220 18R 300:5 122 12R 200:5 77 6R 100:5 40 80E 75:5

1,250 275 24R 400:5 152 12R 200:5 96 9R 150:5 50 100E 75:5

1,500 328 24R 600:5 182 12R 300:5 112 9R 150:5 60 125E 75:5

1,750 382 24R 600:5 212 18R 300:5 130 12R 200:5 70 125E 100:5

2,000 436 36R 800:5 241 18R 400:5 153 12R 200:5 80 150E 100:5

2,250 490 36R 800:5 271 24R 400:5 171 12R 250:5 90 150E 150:5

2,500 534 48X 800:5 300 24R 400:5 188 12R 250:5 100 200E 150:5

3,000 643 57X 1,000:5 359 24R 600:5 224 18R 300:5 120 200E 150:5

3,500 ---- ---- ---- 418 36R 600:5 262 24R 400:5 140 250E 200:5

4,000 ---- ---- ---- 477 36R 800:5 299 24R 400:5 160 250E 200:5

4,500 ---- ---- ---- 550 48X 800:5 316 38R 500:5 179 300E 250:5

5,000 ---- ---- ---- 611 57X 1,000:5 355 38R 500:5 199 300E 250:5

5,500 ---- ---- ---- 678 57X 1,000:5 395 47X 600:5 220 300E 300:5

Footnotes:1. Three-phase, 60 Hz.2. Full-load amperage is abbreviated FLA.3. Horsepower is abbreviated HP.4. Consult Siemens for motor sizes or voltages not

shown.5. Fuse sizes are based on enclosed continuous

current rating, one start from ambient, a coast to stop and a second start.

29

Dimensions

Table 21: Floor plan dimensions in inches (mm)

A B C D E F G H

90.0 (2,286)

36.0 (915)

32.8 (832)

31.0 (787)

21.9 (556)

1.1 (28)

4.7 (119)

2.1 (54)

I J K L M N O P

34.9 (887)

10.1 (256)

6.1 (154)

4.4 (112)

3.5 (89)

2.9 (73)

29.5 (749)

68.5 (1,740)

Q R1 S T U V W X

32.5 (826)

10.0/13.0 (254)/((330)

28.8 (731)

4.0 (102)

3.8 (95)

32.8 (832)

18.8 (478)

4.2 (106)

Footnote:1. 3,000 main bus.

Figure 22: Typical floor plan details for class E2 medium-voltage controllers

B

Front view Side view

B

A

Front Rear

B

Low-voltage compartment

Bus barrier

BA

C

G

Horizontal bus

A

Front Rear

B

BA C

GS

30

Dimensions

Figure 23: Top view and typical floor plan with bus located in top compartment - dimensions in inches (mm)

A B C D E F G H

90.0 (2,286)

36.0 (915)

32.8 (832)

31.0 (787)

21.9 (556)

1.1 (28)

4.7 (119)

2.1 (54)

I J K L M N O P

34.9 (887)

10.1 (256)

6.1 (154)

4.4 (112)

3.5 (89)

2.9 (73)

29.5 (749)

68.5 (1,740)

Q R1 S T U V W X

32.5 (826)

10.0/13.0 (254)/((330)

28.8 (731)

4.0 (102)

3.8 (95)

32.8 (832)

18.8 (478)

4.2 (106)

Figure 24: Top view and typical floor plan with bus located in top-hat compartment - dimensions in inches (mm)

Top view

P

D

E

G

Q

L

M Center line of conduit maximum

Nominal rigid conduit size 3" (76) for control wires

For T1, T2 and T3 to bottom compartment

For T1, T2 and T3 to middle compartment


B

B

BI

K J

.625 (16) diameter two holes for sill anchor bolts when required (one front, one rear)

CD

E

G

L

M

B

H


For T1, T2 and T3 to middle or L1, L2 and L3 to top compartment



Floor plan

Center line of conduit maximum

N

O

.625 (16) diameter four holes for sill anchor bolts

Top view

P

S

T

Q

T

M

Conduit for control wire

For T1, T2 and T3 to top compartment


All conduits maximum rigid size 3.5" (89) for control wires

B

B

BI

K J

.625 (16) diameter two holes for sill anchor bolts when required (one front, one rear)

VD

W

X

X

B

H




Nominal rigid conduit size 3.5" (89)

Floor plan

Center line of conduit maximum

N

O

.625 (16) diameter four holes for sill anchor bolts

V


X

For T1, T2 and T3 to top compartment

Dimensions

31

Table 22: Dimensions and weights

Controller Qty. of cont.7

Dimensions in inches (mm)

Weight in lbs (kg)

Layout

NEMA 1, 1A or 12 NEMA 3R walk-in

NEMA 3R non-walk-in

NEMA 1 or 12

N3R

Type Rating Height Width Depth Width Width

Induction, full-voltage, non-reversing, (FVNR) drawout

5 kV 360 A 1 30 (762) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,400 (635) 1,600 (726) 1

5 kV 720 A 1 36 (915) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,600 (726) 1,800 (817) 2

7 kV 360 A 1 90 (2,286)1 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,500 (681) 1,700 (772) 3/16

7 kV 720 A 1 90 (2,286)1 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,600 (726) 1,800 (817) 2

15 kV 360 A 1 90 (2,286) 126 (3,201) 48 (1,220) ---- ---- 5,000 (2,268) 5,700 (2,586) 29

Reduced-voltage, primary reactor, non-reversing, (RVPR) drawout

5kV 360 A 2 90 (2,286) 60 (1,524)/ 72 (1,829)

36 (915) 78 (1,982) 78 (1,982) 4,000 (1,815)/ 6,800 (3,085)

4,400 (1,996)/ 7,200 (3,266)

4

5 kV 720 A 2 90 (2,286) 96 (2,439)/ 108 (2,744)

36 (915) 114 (2,896) 120 (3,048) 7,400 (3,357)/ 8,800 (3,992)

7,800 (3,538)/ 9,200 (4,173)

5

7 kV 360 A 2 90 (2,286) 72 (1,829)/ 96 (2,439)

36 (915) 78 (1,982)/ 114 (2,896)

120 (3,048) 4,600 (2,087)/ 6,800 (3,085)

5,000 (2,268)/ 7,800 (3,538)

6

7 kV 720 A 2 90 (2,286) 2 36 (915) 2 2 2 2 5

Reduced-voltage, auto-transformer, non-reversing, (RVAT) drawout

5kV 360 A 3 90 (2,286) 60 (1,524)/ 72 (1,829)

36 (915) 78 (1,982) 78 (1,982) 4,200 (1,905)/ 7,000 (3,175)

4,600 (2,087)/ 7,400 (3,357)

7

5 kV 720 A 3 90 (2,286) 96 (2,439)/ 108 (2,744)

36 (915) 114 (2,896) 120 (3,048) 7,600 (3,447)/ 9,000 (4,082)

8,200 (3720)/ 9,600 (4,355)

8

7 kV 360 A 3 90 (2,286) 72 (1,829)/ 96 (2,439)

36 (915) 78 (1,982)/ 114 (2,896)

120 (3,048) 4,800 (2,177)/ 6,800 (3,084)

5,400 (2,449)/ 8,200 (3,720)

9

7 kV 720 A 3 90 (2,286) 2 36 (915) 2 2 2 2 9

Induction, full-voltage, non-reversing, (FVNR) drawout

5 kV 360 A 3 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,800 (817) 2,000 (907) 10

5 kV 720 A 3 90 (2,286) 72 (1,829) 36 (915) 78 (1,982) 78 (1,982) 3,200 (1,452) 3,600 (1,633) 11

7 kV 360 A 3 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 2,000 (907) 2,200 (998) 12

7 kV 720 A 3 90 (2,286) 72 (1,829) 36 (915) 78 (1,982) 42 (1,067) 3,200 (1,452) 3,600 (1,633) 11

Synchronous, reduced-voltage, auto-transformer, non-reversing (RVATS)

5 kV 360 A 3 90 (2,286) 84 (2,134)/ 108 (2,744)

36 (915) 114 (2,896) 120 (3,048) 5,100 (2,313)/ 7,900 (3,583)

5,700 (2,585)/ 8,500 (3,856)

16

5 kV 720 A 3 90 (2,286) 132 (3,353)/ 144 (3,658)

36 (915) 150 (3,810) 156 (3,962) 8,500 (3,856)/ 9,900 (4,491)

9,300 (4,218)/ 10,700 (4,853)

17

7 kV 360 A 3 90 (2,286) 132 (3,353) 36 (915) 150 (3,810) 156 (3,962) 5,700 (2,585)/ 7,900 (3,583)

6,500 (2,948)/ 9,300 (4,218)

16

7 kV 720 A 3 90 (2,286) 2 36 (915) 2 2 2 2 17

Dimensions

32

Footnotes:1. Also available in 45" (1,143 mm) high

construction for two-high arrangement and requires top-mounted bus. Consult factory.

2. Consult factory.3. Weight of drawout carriage is approximately

200 lbs (91 kg).

Controller Qty. of cont.7

Dimensions in inches (mm)

Weight in lbs (kg)

Layout

NEMA 1, 1A or 12 NEMA 3R walk-in4

NEMA 3R non- walk-in5

NEMA 1 or 12

N3R

Type Rating Height Width Depth Width Width

Induction, full-voltage, two-speed, one-winding, (2S1W) drawout

5 kV 360 A 3 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 2,000 (907) 2,200 (998) 21

5 kV 720 A 3 90 (2,286) 2 36 (915) 2 2 2 2 22

7 kV 360 A 3 90 (2,286) 72 (1,829) 36 (915) 78 (1,982) 78 (1,982) 3,300 (1,497) 3,700 (1,678) 23

7 kV 720 A 3 90 (2,286) 2 36 (915) 2 2 2 2 22

Induction, full-voltage, two-speed, two-winding, (2S2W) drawout

5 kV 360 A 2 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,800 (817) 2,000 (907) 18

5 kV 720 A 2 90 (2,286) 72 (1,829) 36 (915) 78 (1,982) 78 (1,982) 3,200 (1,452) 3,600 (1,633) 19

7 kV 360 A 2 90 (2,286) 72 (1,829) 36 (915) 78 (1,982) 78 (1,982) 3,000 (1,361) 3,400 (1,542) 20

7 kV 720 A 2 90 (2,286) 72 (1,829) 36 (915) 78 (1,982) 78 (1,982) 3,200 (1,452) 3,600 (1,633) 19

Latched contactor, drawout

5 kV 360 A 1 30 (762) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,400 (635) 1,600 (726) 1

5 kV 720 A 1 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,600 (726) 1,800 (817) 2

7 kV 360 A 1 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,500 (681) 1,700 (772) 3

7 kV 720 A 1 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,700 (771) 1,900 (862) 2

Solid-state, reduced-voltage, non-reversing (SSRV) drawout

5 kV 360 A 2 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,600 (726) 1,800 (817) 24

5 kV 720 A 2 90 (2,286) 72 (1,829) 36 (915) 78 (1,982) 78 (1,982) 3,200 (1,452) 3,600 (1,633) 25

7 kV 360 A 2 90 (2,286) 72 (1,829) 36 (915) 78 (1,982) 78 (1,982) 3,200 (1,452) 3,600 (1,633) 25

7 kV 720 A 2 90 (2,286) 2 36 (915) 2 2 2 2 25

15 kV 300 A 2 90 (2,286) 96 (2,438) 66 (1,677) ---- ---- 5,000 (2,268) ---- 30

LBS8 600 A or 1,200 A unfused

5 kV/7 kV ---- 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,400 (635) 1,600 (726) 26

LBS8 600 A fused or 1,200 A/ 900E fused

5 kV/7 kV ---- 90 (2,286) 36 (915) 36 (915) 42 (1,067) 42 (1,067) 1,400 (635) 1,600 (726) 26

LBS8 1,200 A/ 1,100E fused

5 kV/7 kV ---- 90 (2,286) 72 (1,829) 36 (915) 78 (1,982) 78 (1,982) 2,200 (998) 2,600 (1,179) 27

Incoming line/main lugs only

5 kV/7 kV ---- 90 (2,286) 18 (457)/ 24 (610)/ 36 (915)

36 (915) 42 (1,067) 42 (1,067) 600 (272) 1,400 (635) 28

4. Height is 107" (2,718 mm).5 Height is 103" (2,616 mm).6. Restricted to 7 kV cable rating only.7. Number of vacuum contactors.8 Load-break switch.

Table 22: Dimensions and weights (continued)

Dimensions

33

Typical layout arrangements1,3,4,5,6,7

Figure 25: Typical layout arrangements

Drawout vacuum contactor or low-voltage compartment2

Drawout vacuum contactor or low-voltage compartment

Drawout vacuum contactor or low-voltage compartment

Layout 1 FVNR 5 kV 360 A and 7 kV 360 A8


Stationary main vacuum contactor

Drawout fuse carriage

Layout 2 FVNR 5 kV 720 A and 7 kV 720 A


Drawout main vacuum contactor

Layout 3 FVNR 7 kV 360 A

Stationary run vacuum contactor


ReactorDrawout main vacuum contactor

Layout 4 RVPR 5 kV 360 A

Layout 5 RVPR 5 kV 720 A and 7 kV 720 A



Current transformer

Reactor




Reactor



Layout 6 RVPR 7 kV 360 A


Auto-transformer

Stationary start and run vacuum contactors


Layout 7 RVAT 7 kV 360 A

Layout 8 RVAT 5 kV 720 A and 7 kV 720 A

Stationary start vacuum contactor



Current transformer

Auto-transformer




Auto-transformer

Stationary start and run vacuum contactors


Layout 9 RVAT 7 kV 360 A


Stationary forward and reverse vacuum contactors


Layout 10 FVR 5 kV 360 A

34


Figure 25: Typical layout arrangements (continued)

Layout 11 FVR 5 kV 720 A and 7 kV 720 A

Layout 12 FVR 7 kV 360 A

Layout 13 FVNRS 5 kV 360 A


Space for field excitation equipment


Layout 14 FVNRS 5 kV 720 A and 7 kV 720 A





Layout 15 FVNRS 7 kV 360 A




Layout 16 RVATS 5 kV 360 A and 7 kV 360 A

Layout 17 RVATS 5 kV 720 A and 7 kV 720 A

(Standard) stationary start and run vacuum contactors



Auto-transformer

(Alternate) stationary start and run vacuum contactors


Layout 18 2S2W 5 kV 360 A9

Stationary reverse vacuum contactor



Stationary forward vacuum contactor



Stationary forward and reverse vacuum contactor


Stationary start vacuum contactor




Current transformer

Auto-transformer




Drawout slow-speed vacuum contactor

Drawout fast-speed vacuum contactor

Layout 19 2S2W 5 kV 720 A and 7 kV 720 A9



Stationary slow-speed vacuum contactor

Stationary fast-speed vacuum contactor



35





Drawout fast-speed vacuum contactor

Drawout slow-speed vacuum contactor

Layout 20 2S2W 7 kV 360 A9

Stationary fast-speed vacuum contactor

Stationary slow-speed/shorting vacuum contactor


Layout 21 2S1W 5 kV 360 A



SSRVDrawout main vacuum contactor

Layout 25 SSRV 5 kV 720 A and 7 kV 360 A

Layout 27 LBS 1,200 A fused

Incoming line

Layout 28 Incoming line

Consult factory

Drawout vacuum controller and SSRV

Layout 24 SSRV 5 kV 360 A

LBS 600 A fused/unfused or 1,200 A fused/unfused (maximum fuse size 900E with fan cooling)

Layout 26 LBS fused or unfused

Fuses (1,100E) LBS 1,200 A

Consult factory

36



Outgoing cable

Drawout fuse carriage and stationary main vacuum contactor

Incoming cable

Layout 29 FVNR 15 kV

Layout 30 SSRV 15 kV

SCR chassis SCR chassis

Drawout fuse carriage and stationary main and bypass vacuum contactors

Incoming cables

Footnotes for layouts 1 through 30:1. FVNR = Full-voltage, non-reversing

RVPR = Reduced-voltage, primary reactor

RVAT = Reduced-voltage, auto-transformer

FVR = Full-voltage, reversing

FVNRS = Full-voltage, non-reversing,

synchronous

SSRV = Solid-state, reduced-voltage

LBS = Load-break switch2. When upper cell is used for a drawout contactor,

horizontal main bus (if required) is mounted

on top of unit, adding 10" (254 mm) or 13"

(330 mm) to the height of the indoor structure.

Choice of protective relays is limited. Consult

factory.

3. Weights and dimensions of reactor and auto-

transformer controllers vary as motor size

increases.4. Metering and protective device space

requirements may require an addition of a

90" (2286 mm) high x 24" (610 mm) or

36" (914 mm) wide x 36" (914 mm) deep

auxiliary structure.5. Surge protection consists of three-phase station

class arresters and surge capacitors, and requires

a 24” (610 mm) wide auxiliary incoming line

section for mounting.6. Type 3EF1 surge limiters can be provided with

any controller with no effect on layout or

dimensions.

7. Special metering and protective relaying: a

wide variety of current- and voltage-sensing

protective relays, metering devices and similar

equipment is available. Normally, the top one-

third of the structure will be devoted to a low-

voltage section housing these devices, and the

middle and lower cells will each house a FVNR

controller.8. Layout 1 for 7kV FVNR restricted to 7 kV cables

only. For 15 kV outgoing cables, use Layout 3

arrangement.9. Without mechanical interlock.

Outgoing cables

37

Standard controller components

FVNR - Full-voltage, non-reversing, squirrel-cage controller includes:

One 360 A three-pole drawout vacuum contactor

Three current-limiting power fuses

One 0.75 kVA control transformer with two primary and one secondary current-limiting fuses

One master control relay (three NO and one NC auxiliary contacts)

One start/stop pushbutton

One three-phase ambient compensated thermal overload relay

One externally mounted overloaded reset button

Three current transformers

One test switch and circuit

One vacuum contactor position indicator light

One drawout (racking) mechanism.

FVR - Full-voltage, reversing, squirrel-cage controller includes:


Two 360 A three-pole stationary contactors (forward/reverse)











RVATNR - Reduced-voltage, auto-transformer, non-reversing, squirrel-cage controller includes:


Two 360 A three-pole stationary vacuum contactors (start/run)


One auto-transformer with 50, 65 and 80 percent voltage taps

One automatic transfer timing relay





One incomplete sequence relay






RVPRNR - Reduced-voltage, primary reactor, non-reversing, squirrel-cage controller


One 360 A three-pole stationary vacuum contactor (shorting)


One primary reactor with 50, 65 and 80 percent voltage taps




38


FVNRS - Full-voltage, brushless synchronous, non-reversing controller includes:


Two 360 A three-pole stationary vacuum contactors (start/run)


One auto-transformer with 50, 65 and 80 percent voltage taps




















FVMLNR - Full-voltage, mechanically latched, electrically tripped, non-reversing controller, fused includes:




One close pushbutton

One open pushbutton


One three-phase overcurrent relay

One manual trip external operator button





39


SSRV - Solid-state, reduced-voltage, non-reversing, squirrel-cage controller includes:

One 360 A three-pole drawout main vacuum contactor

One 360 A three-pole fixed bypass vacuum contactor

Three current-limiting power fuses mounted on wheeled drawout carriage

One 2 kVA control transformer with two primary and one secondary current-limiting fuses mounted on a drawout carriage

One SCR power section

One door-mounted soft start liquid crystal display (LCD) and keypad


One three-phase voltage transformer



One contactor carriage racking mechanism.

The SCR logic control incorporates the following standard protection, metering and parameter adjustments:

Initial voltage (0 to 100 percent nominal voltage), factory set at 20 percent

Current limit (200 to 600 percent of motor FLA), factory set at 350 percent

Acceleration time (0 to 120 seconds), factory set at 10 seconds

Deceleration time (0 to 60 seconds), factory set at 5 seconds

Decel-final torque (0 to 10 percent sensitivity)

Pump control (four closed-loop start and stop curves)

Pulse (kick) start (0.1 to 2.0 seconds@80 line voltage)

Undervoltage trip (70 to 90 percent, adjustable trip delay)

Overvoltage trip (110 to 125 percent, adjustable trip delay 1 to 60 seconds)

Undercurrent (load loss) trip (10 to 90 percent of motor FLA, adjustable trip delay)

Allowable restarts (0 to 10, adjustable time inhibit)

Electronic overload (inverse time, 75 to 150 percent of motor FLA; two-stage programmable class 5 to 30)

Electronic shear pin (trips within one cycle of setpoint)

Phase loss (one or more phases missing)

Phase sequence (phase sequence incorrect)

Shorted SCR (internal fault detected)

Connection error (internal fault/motor connection)

Starter over temp (heatsink over temperature)

Elapsed time meter

Maximum current

Starting time for last start

Total number of starts

Cause of last fault

Percentage of current at last trip

Total number of trips

RS 485 with Modbus remote terminal unit (RTU) protocol

Opto-isolated inputs

Non-volatile memory for programming and faults

Programmable in four languages.

40


Table 23: Remarks

41


Table 23 Remarks (continued)

42


Table 23: Remarks (continued)

43

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Published by and copyright © 2010:Siemens AGEnergy SectorFreyeslebenstrasse 191058 Erlangen, Germany

Siemens Energy, Inc.7000 Siemens RoadWendell, North Carolina 27591 USA

For more information, contact +1 (800) 347-6659

Order No. E50001-F710-A120-X-4A00Printed in USATD 1219F BR 0410.5

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Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.

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