Nikum Energy Control (I) Limited

Website www.nikum.co.in Email contact@nikum.co.in Phone +91 8510024871/2/3

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NIKUM Automatic Circuit Recloser

2

CONTENTS

TITLE PAGE NUMBER

Introduction

Overview

Features

Range

3

Technology Review

Recloser Technology

Vacuum Interruption

Surge Protection

Flashover Recovery

4

4

4

5

5

Construction 6

Operation 6

Electronic Control

Recloser Electronic Control

Relay Control Unit

7

7

8

Drawings 9

Accessories

Communication Package

10

Ratings And Specifications 11

NIKUM Automatic Circuit Recloser

3

INTRODUCTION

Overview

Nikum strives to bring our customers the latest technology.

Combined with superior performance, competitive pricing, and

unparalleled service aimed at total customer satisfaction, our

products are the natural choice for you. This is especially true

of our feeder automation products, where years of knowledge

and modular manufacturing techniques allow our PSN series

vacuum reclosers and contactors to meet any need and

schedule.

Features

Flexible mounting options, such as indoor

and outdoor with individually mounted poles.

Cast aluminum and stainless steel high volt-

age ensure the best weathering/corrosion

performance

Solenoid Operation = no mechanically

charged components for added safety.

No oil or gas insulation = environmentally

friendly products.

Less moving parts = less maintenance.

Compact designs provide easy installation

in substations.

Low profile control cabinet (LPCC) available

where compact, lightweight control cabinets

are required.

Proven design rated for 10,000 full load

operations.

Composite Silicon insulation provides

industry leading reliability.

Range (11kV-33kV) PSN series for three phase

operation.

NECL-M series for single

phase operation.

NECL-X series for

compact and lightweight

applications.

NIKUM Automatic Circuit Recloser

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TECHNOLOGY REVIEW

As part of our initiative to stay a generation ahead,

NIKUM has assembled the latest magnetic actuation

technology, highest quality vacuum interrupters, and

most durable insulating material into the most

dependable, cost effective, and lowest maintenance

solution for recloser products. The PSN and NECL

series, all function using the advanced technology

created by NIKUM’s researchers, and engineers.

The reclosing sequence can be adjusted according to

the requirement.

Recloser Technology

Vacuum Interruption

NIKUM reclosers use vacuum as the interrupting medium.

Vacuum interrupters provide fast, low-energy arc

interruption with long contact and interrupter life, low mechanical

stress, and maximum operating safety.

With arc interruption taking place in a vacuum, contact and

interrupter life are several times greater than with interruption in

oil, virtually eliminating Interrupter maintenance.

NIKUM Automatic Circuit Recloser

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Surge Protection

Best operating results are achieved

when reclosers are protected with

surge arresters. On line applications,

arrester protection is recommended

on both sides of a recloser. If protection

is to be provided on one side

Flashover Recovery

Flashovers occur when an object,

usually wildlife, contacts energized

parts of the equipment. The NIKUM

recloser minimizes the effect of flashovers

with remarkable physical resilience,

arc-quenching properties, and

a self-healing ability. NIKUM recloser

can withstand the enormous forces

experienced during faults without

wholesale damage and allows reenergizing

after external flashover

NIKUM Automatic Circuit Recloser

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Construction

In common with other reclosers, Type NIKUM reclosers are designed for long service life with minimum maintenance. The

recloser head is an aluminum/steel casting. The tank is fabricated of heavy-gauge steel and is finished with a corrosion-inhibiting-

epoxy prime coat, followed by a finish coat of thermosetting decal paint. Finish color is light gray.

The recloser head is attached to a welded angle- and channel-steel box frame which facilitates handling and mounting. The tank is

suspended within the box frame from the head. Each interrupter is independently suspended from the internal mechanism under

the recloser head in a way which eliminates mechanical stress on the bushings as well as any need for adjustment between the

bushing and interrupter. Silicon bushings are provided for flexible mounting options.

Two targets, embedded on the recloser body, provide continuous (easily readable) indications of contact position and recloser

state. Contact position indication is either CLOSED (white letters on red background) or OPEN (white letters on green back-

ground).

A four-stage auxiliary switch is provided as standard. Normally set for four “a” and four “b” contacts, the switch can be pro-

grammed for other “a” and “b” combinations totaling eight. It is operated by the recloser mechanism and is wired to a terminal

block in the operator cabinet.The switch can be used to provide a remote indication of contact position or to switch other devices,

such as alarm circuits, coincidentally with recloser contact opening and closing.

Operation

Line current in all three phases is sensed by 1000:1 ratio current transformers on bushings 1, 3, and 5 under the recloser head.

Continuous signals from the CT’s, proportional to line currents, are routed to the recloser control, where they are monitored.

When the line current flows in excess of the programmed minimum trip level, in one or more phases, and after a time delay based

on the programmed time current characteristic, a trip solenoid in the operating mechanism is energized by the electronic control

(240V AC). The solenoids pull a shaft coupled with the vacuum interrupters that provide enough force for the interrupters to break

the contact. A linkage simultaneously operates all three phases, opening the recloser contacts and a switch which interrupts the

trip signal.

from the control.

During the process of tripping the shaft gets locked in the end position by a automatically adjusting self locking device. Once the

recloser is tripped, the supply to the solenoids are cut-off to save energy by a limit switch.

Closing

As with contact opening, contact closing force is provided

through the release of closing solenoids. The closing solenoids

are charged by 240 V AC supply fed through contactors. Upon

receiving a closing signal from the control, a solenoid energiz-

es, overcoming the forces exerted by the locking mechanism.

When released from the lock, the solenoids cause the operat-

ing mechanism to close the vacuum interrupter contacts. Limit

switches interrupt the supply to the solenoids and the signal

from the control when the recloser is closed to save energy.

Tripping

NIKUM Automatic Circuit Recloser

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Recloser Electronic Control

Nikum recloser is electronically con-

trolled by a recloser control unit. The

relay offers a choice of two controls that

can be used in conjunction with this re-

closer. The control unit, is a solid-state

electronic control system, using conven-

tional, discrete, electronic components.

Control operating parameters are pro-

grammed via plug-in modules. These

programming components provide pre-

cise values for operating parameters,

which include: time-current characteris-

tics, reclosing delay intervals, and mini-

mum trip levels.

The control provides simple selector

switch determination of phase and

ground-trip sequences and operations to

lockout. Operating characteristics and be

quickly and easily changed, to meet new

application requirements, by simply

changing the dial settings or plug-in

component(s), without removing the re-

closer from service.

The relay control can be equipped with a

variety of accessories to provide remote

operation and monitoring for SCADA

applications.

Some of the available accessories in-

clude: remote fault indication, re-

mote modification of operating

characteristics, and remote opera-

tion.

NIKUM Automatic Circuit Recloser

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Relay Control Unit

Local human-machine interface

− Simple menu-driven programming using large six-button keypad.

− Backlit display indicates metering values, fault information and location.

− Temperature compensated - operating temperature range: -40 °F (-40 °C) to +158 °F (+70 °C)

− Two levels of password-protected settings and controls.

Indicator lights

− Continual self-checking with status indication.

− Pickup and lockout indication.

− User programmable LEDs for alarms, additional targets, etc.

Front mounted RS-232 port

− Independent from rear mounted RS-232 port.

− Easy download and upload of data on-site using windows compatible software.

NIKUM Automatic Circuit Recloser

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Drawings

Control Panel Recloser Architecture

Mounting Details

NIKUM Automatic Circuit Recloser

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Accessories

Communications Packages

Nikum can package reclosers with communications packages

for a variety of protocols and transfer methods.

NIKUM supported protocols include:

− DNP 3.0 Level 2

− MODBUS ASCII

− Cellular/ Telemetry Interface: For operation of recloser through

cellular mobile phone.

Bluetooth

Stay out of the weather with the RN-220XP

adapter for communication with your Nikum

reclosers.

− Provides wireless connection to relay.

− Supports DNP 3.0 and MODBUS proto-

cols.

− Built-in lithium ion battery (1.1AH) pro-

vides up to 32 hours of continuous opera-

tion.

− Secure Spread Spectrum Communication

− Adapter available for laptops without

Bluetooth

Ethernet Hub

Effortlessly multiplex up to 6 reclosers from one location. The

12A03054H01 ethernet hub has many benefits and features:

− Ideal for substation applications

− Does not require much space or complicated rack mounts

− Supports DNP 3.0 and MODBUS protocols

− Supports a variety of TCP/IP features

− Supports one RS-232 and four RS-485 ports

− 40 MHz processor

REMOTE CONTROL & MONITORING

When used with a compatible Distribution Automation System (DSA) Nikum pole mount-

ed reclosers support remote controlling and monitoring to provide the following ad-

vantages:

• Information on reclosure status and fault current values transmitted to system control

allows fast operation of the faulted line section, reducing the travelling time of line crews.

• This same information allows informed remote switching which reduces the affected

area and quickly restores supply.

• Reclosers can be configured and settings managed from system control, without

technicians having to visit each individual reclosure in the field, with a consequent reduc-

tion in staffing and improved system integrity.

Supported communications

include:

Wi-Fi, cellular, radio,

Ethernet, SCADA,

and 900/1800/2100 MHz

spread spectrum.

Bluetooth Ethernet Cellular

NIKUM Automatic Circuit Recloser

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Ratings And Specifications

Rated Voltage 11Kv 12.5kV 25kV 33kV

Maximum Voltage 12kV 15kV 27kV 36kV

Rated Basic Impulse Level 110kV 125kV 150kV 170kV

Radio Noise Limit (µV) 100@9.6kV 100@9.6kV 100@16.4kV 100@24kV

Power Frequency Withstand

(Dry)

55kV 55kV 60kV 75kV

Power Frequency Withstand

(Wet)

50kV 50kV 55kV 70V

Rated Continuous Current 400– 1600 A 400-1600 A 400-1250 A 400-1250 A

Short Circuit Current With-

stand, Symmetrical

12.5-40 kA 12.5-40 kA 12.5–31.5kA 12.5-31.5 kA

Making Current, Asymmetrical 31 kA 31 kA 31 kA 31 kA

Cable Charging Current 10 A 13 A 22 A 24 A

Weight- Recloser (kg) 76-122 85-130 165-210 180-320

Weight –Control Cabinet (kg) 24 24 35 35

Maximum Interrupting Time

(ms)

58 60 48 46

Maximum Closing Time 60 60 56 56

Current Transformer One per phase

Control Voltage 120/240 V AC

Creepage Distance

(mm)

11kV 12.5kV 25kV 33kV

Terminal to ground 950 950 1060 1060

Lower terminal to ground/

earth

660 680 950 970

NIKUM Automatic Circuit Recloser

12

Testing And Standard

Testing

The NEC-PSN circuit-breakers have undergone the tests indicated below and guarantee

the safety and reliability of the apparatus in service in any installation:

• Type tests: heating, withstand insulation at power frequency, withstand insulation at

lightning impulse, short-time and peak withstand current, mechanical life, short-circuit

current making and breaking capacity.

• Individual tests: insulation of the main circuits with voltage at power frequency,

auxiliary circuit and operating mechanism insulation, measurement of the main circuit

resistance, mechanical and electrical operation.

Standard

GB/T 11022, IEC 60694 and DIN VDE 0670 part 100, "Common specifications for high voltage

switchgear and control gear standards".

GB 1984 and IEC 62271-100 , "High-voltage alternating-current circuit-breakers".

DIN VDE 0141, earthing systems for special power installations with rated voltages over 1 kV.

IEC 61936, Electrical devices with rated voltage above AC 1 kV.

PC37.60 - IEC/IEEE Draft International Standard for Automatic Circuit Reclosers and Fault In-

terrupters for Alternating Current Systems Up to 38 kV.

Head Office

Address Plot No-29,D Block, Phase A-2, UP-SIDC Industrial Ghaziabad, Uttar Pradesh, India Pincode 201102 Contact +91 8510024 871/2/3 ; +91 9350 139 227 E-mail contact@nikum.co.in ;

For any further details,please visit:

www.nikum.co.in

or E-mail at – contact@nikum.co.in;

yadav_35@yahoo.com;

We at Nikum manufacture switchgear & protection

equipment. We provide electric power optimiza-

tion which include services such as Power Factor

Correction, Harmonic Filtering etc.

Some of our products:

Automatic Circuit Recloser

Vacuum Circuit Breaker

HT Fuse(33/11 kV)

HRC Fuse

Protection Fuse

Semi-Conductor Fuse

Crane Master Control

Distribution Panel

APFC Panel

Wire Rope Compound

Flow Switch

Clamps

Hosepipe

Capacitor Bank

Clamp & Nut Bolts

Mica Insulator

Epoxy insulators

Super Charge Resin

Branch Office

Jamshedpur, Jharkhand

Address Parmanu Nagar, Kandra

Road ,

Behind Sri Ram Ranta,

Adityapur,

Jamshedpur, Jharkhand

Pincode 831013

Contact +91 9304 321 564

Durgapur, West Bengal

Address 54,Malhar North Avenue, Bengal Ambuja City Cen-

tre,

Durgapur, West Bengal.

Contact +91 9474 600 889

As an initiative towards environment safety most of the

products at Nikum are designed to be built through the

raw materials which are recyclable and environment

friendly.