01- cjx interposing relay set

CJX

Interposing Relay Set

Instruction Manual

NR Electric Co., Ltd.

Preface

CJX Interposing Relay Set i

Date: 2012-03-29

Preface

Introduction

This guide and the relevant operating or service manual documentation for the equipment provide

full information on safe handling, commissioning and testing of this equipment.

Documentation for equipment ordered from NR is dispatched separately from manufactured goods

and may not be received at the same time. Therefore, this guide is provided to ensure that printed

information normally present on equipment is fully understood by the recipient.

Before carrying out any work on the equipment, the user should be familiar with the contents of

this manual, and read relevant chapter carefully.

This chapter describes the safety precautions recommended when using the equipment. Before

installing and using the equipment, this chapter must be thoroughly read and understood.

Health and Safety

The information in this chapter of the equipment documentation is intended to ensure that

equipment is properly installed and handled in order to maintain it in a safe condition.

When electrical equipment is in operation, dangerous voltages will be present in certain parts of

the equipment. Failure to observe warning notices, incorrect use, or improper use may endanger

personnel and equipment and cause personal injury or physical damage.

Before working in the terminal strip area, the equipment must be isolated.

Proper and safe operation of the equipment depends on appropriate shipping and handling,

proper storage, installation and commissioning, and on careful operation, maintenance and

servicing. For this reason, only qualified personnel may work on or operate the equipment.

Qualified personnel are individuals who:

Are familiar with the installation, commissioning, and operation of the equipment and of the

system to which it is being connected;

Are able to safely perform switching operations in accordance with accepted safety

engineering practices and are authorized to energize and de-energize equipment and to

isolate, ground, and label it;

Are trained in the care and use of safety apparatus in accordance with safety engineering

practices;

Are trained in emergency procedures (first aid).

Preface

CJX Interposing Relay Set ii

Date: 2012-03-29

Instructions and Warnings

The following indicators and standard definitions are used:

DANGER!

It means that death, severe personal injury, or considerable equipment damage will occur if safety

precautions are disregarded.

WARNING!

It means that death, severe personal, or considerable equipment damage could occur if safety

precautions are disregarded.

CAUTION!

It means that light personal injury or equipment damage may occur if safety precautions are

disregarded. This particularly applies to damage to the device and to resulting damage of the

protected equipment.

WARNING!

The firmware may be upgraded to add new features or enhance/modify existing features, please

make sure that the version of this manual is compatible with the product in your hand.

WARNING!

During operation of electrical equipment, certain parts of these devices are under high voltage.

Severe personal injury or significant equipment damage could result from improper behavior.

Only qualified personnel should work on this equipment or in the vicinity of this equipment. These

personnel must be familiar with all warnings and service procedures described in this manual, as

well as safety regulations.

In particular, the general facility and safety regulations for work with high-voltage equipment must

be observed. Noncompliance may result in death, injury, or significant equipment damage.

DANGER!

Never allow the current transformer (CT) secondary circuit connected to this equipment to be

opened while the primary system is live. Opening the CT circuit will produce a dangerously high

voltage.

WARNING!

Preface

CJX Interposing Relay Set iii

Date: 2012-03-29

Exposed terminals

Do not touch the exposed terminals of this equipment while the power is on, as the high voltage

generated is dangerous

Residual voltage

Hazardous voltage can be present in the DC circuit just after switching off the DC power supply. It

takes a few seconds for the voltage to discharge.

CAUTION!

Earth

The earthing terminal of the equipment must be securely earthed

Operating environment

The equipment must only be used within the range of ambient environment detailed in the

specification and in an environment free of abnormal vibration.

Ratings

Before applying AC voltage and current or the DC power supply to the equipment, check that they

conform to the equipment ratings.

Printed circuit board

Do not attach and remove printed circuit boards when DC power to the equipment is on, as this

may cause the equipment to malfunction.

External circuit

When connecting the output contacts of the equipment to an external circuit, carefully check the

supply voltage used in order to prevent the connected circuit from overheating.

Connection cable

Carefully handle the connection cable without applying excessive force.

Preface

CJX Interposing Relay Set iv

Date: 2012-03-29

Copyright

Version: R1.02

P/N: EN_CZXL0107.0086.0003

Copyright NR 2012. All rights reserved

NR ELECTRIC CO., LTD.

69 Suyuan Avenue. Jiangning, Nanjing 211102, China

Tel: +86-25-87178185, Fax: +86-25-87178208

Website: www.nrelect.com, www.nari-relays.com

Email: [email protected]

We reserve all rights to this document and to the information contained herein. Improper use in particular reproduction and dissemination

to third parties is strictly forbidden except where expressly authorized.

The information in this manual is carefully checked periodically, and necessary corrections will be included in future editions. If

nevertheless any errors are detected, suggestions for correction or improvement are greatly appreciated.

We reserve the rights to make technical improvements without notice.

Table of Contents

CJX Interposing Relay Set i

Date: 2012-03-29

Table of Contents

Preface ..................................................................................................... i

Introduction ................................................................................................................ i

Health and Safety ....................................................................................................... i

Instructions and Warnings ....................................................................................... ii

Table of Contents .................................................................................... i

1 Introduction ......................................................................................... 1

1.1 Application ........................................................................................................... 1

1.2 Function ............................................................................................................... 1

1.3 Features ............................................................................................................... 1

1.4 Product Type ....................................................................................................... 2

2 Technical Data ..................................................................................... 3

2.1 Electrical Specifications ..................................................................................... 3

2.1.1 Power Supply ........................................................................................................................ 3

2.1.2 Binary Output ........................................................................................................................ 3

2.2 Mechanical Specifications ................................................................................. 3

2.3 Ambient Temperature and Humidity Range ...................................................... 4

2.4 Type Tests ............................................................................................................ 4

2.4.1 Environmental Tests .............................................................................................................. 4

2.4.2 Mechanical Tests................................................................................................................... 4

2.4.3 Electrical Tests ...................................................................................................................... 4

2.4.4 Electromagnetic Compatibility ............................................................................................... 4

2.5 Certifications ....................................................................................................... 5

3 Operation Theory ................................................................................ 7

3.1 Overview .............................................................................................................. 7

Table of Contents

CJX Interposing Relay Set ii

Date: 2012-03-29

3.2 Control Circuit Module (Single Tripping Coil) .................................................. 8

3.2.1 Power Supply ........................................................................................................................ 9

3.2.2 Circuit Breaker Open State Supervision ................................................................................ 9

3.2.3 Closing Circuit ....................................................................................................................... 9

3.2.4 Trip Circuit ........................................................................................................................... 10

3.2.5 KKJ ..................................................................................................................................... 10

3.2.6 Anti-pump ............................................................................................................................ 11

3.2.7 Circuit Breaker Closed State Supervision ........................................................................... 12

3.2.8 Pressure Supervision .......................................................................................................... 12

3.2.9 Spare Contacts ................................................................................................................... 12

3.3 Seal-in Module ................................................................................................... 12

3.4 Voltage Switchover Module with Latch ........................................................... 14

3.5 Voltage Switchover Module without Latch ...................................................... 16

3.6 LOCKOUT-A Module ......................................................................................... 17

3.7 LOCKOUT-B Module ......................................................................................... 20

3.8 Repeat Relay Module ........................................................................................ 21

3.9 Control Circuit Module (Double Tripping Coils) ............................................. 22

3.9.1 Power Supply and Its Supervision ...................................................................................... 22

3.9.2 Circuit Breaker Open State Supervision .............................................................................. 26

3.9.3 Closing Circuit ..................................................................................................................... 26

3.9.4 Trip Circuit 1 ........................................................................................................................ 26

3.9.5 SHKKJ and STKKJ ............................................................................................................. 26

3.9.6 Anti-pump ............................................................................................................................ 27

3.9.7 Circuit Breaker Closed State Supervision circuit 1 .............................................................. 27

3.9.8 Circuit Breaker Closed State Supervision circuit 2 .............................................................. 27

3.9.9 Trip Circuit 2 ........................................................................................................................ 28

3.9.10 Pressure Supervision ........................................................................................................ 28

3.9.11 Spare Contacts .................................................................................................................. 28

3.10 Voltage Parallel Module .................................................................................. 29

Table of Contents

CJX Interposing Relay Set iii

Date: 2012-03-29

4 Hardware ........................................................................................... 31

4.1 Overview ............................................................................................................ 31

4.1.1 CJX-01 ................................................................................................................................ 31

4.1.2 CJX-02 ................................................................................................................................ 32

4.1.3 CJX-03 ................................................................................................................................ 32

4.1.4 CJX-04 ................................................................................................................................ 33

4.1.5 CJX-11 ................................................................................................................................ 33

4.1.6 CJX-21 ................................................................................................................................ 34

5 Installation and Commissioning ...................................................... 35

5.1 Introduction ....................................................................................................... 35

5.2 Safety Information............................................................................................. 35

5.3 Overview ............................................................................................................ 37

5.4 Unpacking and Checking the Protection Equipment ..................................... 37

5.5 Installing the Protective Device ....................................................................... 38

5.5.1 Overview ............................................................................................................................. 38

5.5.2 Dimensions ......................................................................................................................... 38

5.5.3 Grounding Guidelines ......................................................................................................... 39

5.5.4 Cubicle Grounding .............................................................................................................. 40

5.5.5 Making Electrical Connections ............................................................................................ 40

5.6 Check the External Circuit ............................................................................... 41

5.7 Insulation Test (if required) .............................................................................. 41

5.8 Final Check ........................................................................................................ 42

6 Maintenance ...................................................................................... 43

6.1 Routine Check ................................................................................................... 43

6.2 Replace Failed Modules ................................................................................... 43

6.3 Cleaning ............................................................................................................. 44

6.4 Storage ............................................................................................................... 44

Table of Contents

CJX Interposing Relay Set iv

Date: 2012-03-29

7 Decommissioning and Disposal ...................................................... 45

7.1 Decommissioning ............................................................................................. 45

7.2 Disposal ............................................................................................................. 45

8 Manual Version History .................................................................... 47

1 Introduction

CJX Interposing Relay Set 1

Date: 2012-03-29

1 Introduction

1.1 Application

CJX series interposing relay set are designed to provide various restart relay modules for

protectors. The device is assembled by combined module, with 14 slots which are independent. It

can be configured flexibly, and has been applied widely in actual projects.

Current CJX series interposing relay set have been furnished with complete types of module which

can be classified as follows by their functions:

1. Control relays of three-phase circuit breaker with one or two trip coil(s)

2. Seal-in relays

3. Switchover relays of voltage with or without latch

4. Lockout relays

5. Contacts multiplication relays

6. Paralleling relays of voltage

Since each module is independent respectively, the device has extreme scalability. The types of

module can be extended in the future, which can meet various requirements in the field.

1.2 Function

1. Manual closing, reclosing, phase-segregated tripping functions

2. DC power supply monitoring

3. Anti-pump function

4. Open state supervision, closed state supervision

5. Low pressure to block tripping, closing and AR

6. AC voltage switchover

1.3 Features

1. The types of modules are complete, with perfect functions and flexible configuration, which

can meet various project requirements.

2. The device uses imported completely-sealed, high-resistance and small power consumption

relay, which greatly decreases the power consumption and heating, and improve humidity

proof and other properties, thus increasing the safety of the device.

1 Introduction


Date: 2012-03-29

3. The device can provide many reserved relays, providing flexible applications.

1.4 Product Type

CJX series interposing relay set are designed to provide various extension relay module for

protective device, classified into six types by different module configuration: CJX-01, CJX-02,

CJX-03, CJX-04, CJX-11 and CJX-21. Various module assembled combined with relevant integral

panel, can meet the requirements of most projects.

Type Application Scope

CJX-01 Applied to the areas requiring several breakers operation circuits with single tripping coil and

voltage switching circuits

CJX-02 Applied to the areas requiring LOCKOUT relay to operate breaker without operation circuit

CJX-03 Applied to the areas requiring several tripping/closing current seal-in circuits and repeat relay

circuits

CJX-04 Applied to the areas requiring several voltage switch and voltage parallel circuits

CJX-11 Applied to the areas requiring to operate two sets of three-phase interlock breakers with single

tripping coil and realize double busbars voltage switching

CJX-21 Applied to the areas requiring to operate a set of three-phase interlock breaker with double

tripping coil and realize double busbars voltage switching

Note!

To enhance or revise current function, the hardware of device may be updated, please

confirm that this version of manual is compatible with your products.

2 Technical Data


Date: 2012-03-29

2 Technical Data

2.1 Electrical Specifications

2.1.1 Power Supply

Rated Voltage 110Vdc, 125Vdc, 220Vdc, 250Vdc

Variation (80%~120%)Un

Ripple in the DC auxiliary

voltage Max 15% of the DC value. Per IEC 60255-11:1979

Burden Quiescent condition < 40W

Operating condition < 70W

2.1.2 Binary Output

Contact Type Tripping contact Signal contact

Output mode Potential free contact

Rated Voltage 250Vac/dc 250Vac/dc

Test voltage across open

contact > 1000Vac rms

Continuous carry 8A 5A

Short duration current

(200ms) 50A

Pickup time (Typ/Max) 5ms/10ms 10ms/15ms

Dropout time (Typ/Max) 4ms/10ms 8ms/10ms

Bounce time < 1ms < 1ms

Breaking capacity at 250Vdc 0.4A resistance

0.2A inductive (L/R=40ms)

0.2A resistance

0.05A inductive (L/R=40ms)

2.2 Mechanical Specifications

Enclosure dimensions

(WHD) 482.6177291 (unit: mm)

Trepanning dimensions

(WH) 450179, M6 screw

Mounting Way Flush mounted

Weight per device Approx. 15kg

Housing material Aluminum alloy

Housing color Silver grey

Location of terminal Rear panel of the device

Protection class: Per IEC60529:1989

2 Technical Data


Date: 2012-03-29

Front side IP40, Up to IP51(Flush mounted)

Other sides IP30

Rear side, connection

terminals IP20

2.3 Ambient Temperature and Humidity Range

Standard IEC 60255-6:1988

Operating temperature -25C~+60C

Transport and storage

temperature range -40C~+70C

Permissible humidity 5%~95%, condensation not permissible

Pollution degree 2

Altitude 100M, 500Vdc

Overvoltage category

2.4.4 Electromagnetic Compatibility

1MHz burst disturbance test

Per IEC 60255-22-1:1988 (idt IEC61000-4-12:1995)

Common mode: class III 2.5KV

Differential mode: class III 1.0KV

Electrostatic discharge test Per IEC60255-22-2:1996 (idt IEC 61000-4-2:2006) class IV

For contact discharge: 8kV

2 Technical Data


Date: 2012-03-29

For air discharge: 15kV

Radio frequency

interference tests

Per IEC 60255-22-3:2000 (idt IEC 61000-4-3:1995) class III

Frequency sweep

Radiated amplitude-modulated

10V/m (rms), f=801000MHz

Spot frequency

Radiated amplitude-modulated

10V/m (rms), f=80MHz/160MHz/450MHz/900MHz

Radiated pulse-modulated

10V/m (rms), f=900MHz

Fast transient disturbance

tests

Per IEC 60255-22-4:2002 (idt IEC 61000-4-4:2004)

Power supply, I/O, Earth: Class IV, 4kV, 2.5 kHz, 5/50ns

Communication terminals: Class IV, 2kV, 5 kHz, 5/50ns

Surge immunity test Per IEC 60255-22-5:2002 (idt IEC 61000-4-5:1995) class III

Power supply, AC input, I/O port: 2kV, line to earth; 1kV line to line, 1.2/50us

Conducted RF

Electromagnetic Disturbance

Per IEC 60255-22-6:2001

Power supply, AC, I/O, Comm. Terminal: Class III, 10Vrms, 150 kHz~80MHz

Power Frequency Magnetic

Field Immunity

Per IEC 61000-4-8:1993

Class V: 100A/m for 1min, 1000A/m for 3s

Pulse Magnetic Field

Immunity

Per IEC 61000-4-9:1993

Class V: 6.4/16s, 1000A/m for 3s

Damped oscillatory

magnetic field immunity

IEC 61000-4-10:1993

Class V: 100kHz & 1MHz100A/m

2.5 Certifications

1. ISO9001: 2000

2. ISO14001:2004

3. OHSAS18001:1999

4. ISO10012:2003

5. CMMI L4

6. EMC: 2004/108/EC, EN50263:1999

7. Products safety(PS): 2006/95/EC, EN61010-1:2001

2 Technical Data


Date: 2012-03-29

3 Operation Theory


Date: 2012-03-29

3 Operation Theory

3.1 Overview

CJX series devices are assembled by modules which are mutually independent. Twelve types of

modules are provided, as listed in Table 3.1-1.

Table 3.1-1 Types of modules

No. Function ID

A Control relay of circuit breaker with single tripping coil SWI

B Seal-in current relays BO

C Voltage switchover relays RLY

D Lockout relays (type A) BO

E Repeat relays BO

F Isolation and shield

G Control relays of circuit breaker with double tripping coils (card A) SWI

H Control relays of circuit breaker with double tripping coils (card B) SWI

I Control relays of circuit breaker with double tripping coils (card C) SWI

J Voltage paralleling relays BO

K Voltage switchover RLY

L Lockout relays (type B) BO

Z Spare slot

CJX device has 14 slots in total. The types and quantity of modules can be configured flexibly.

Based on summary of many years of experiences, we integrate six types of devices which are

composed of various integral panels assembled by various modules, which can meet most current

application requirements, in which:

1. CJX-01

Can be equipped with four control circuit modules (A) and four voltage switchover modules (C or K)

at most

2. CJX-02

Can be equipped with eight LOCKOUT modules (D or L) at most

3. CJX-03

Composed of seal-in current module (B) and repeat relay module (E), the numbers of modules are

determined according to the requirements

4. CJX-04

Can be equipped with ten voltage switchover modules (C or K) and three voltage paralleling

modules (J)

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5. CJX-11

Composed of two control circuit modules (A) and two voltage switchover modules (c or K)

6. CJX-21

Composed of a set of (three card-A, B, C) control circuit modules of double tripping coils with DC

power switchover (G, H, I) and two voltage switchover modules (C or K)

3.2 Control Circuit Module (Single Tripping Coil)

The principle of control circuit module with single tripping coil is shown in Figure 3.2-1.

R1'

D6

R1

S2'

S1'

R15 L1

D23

R14

D16

n11

n3

n1 n15

n12

n2

n4

n20

S3'

n5

n13

n14

n16

n18

Pwr+

D24

L2

R3

R4

R2'R2

R16

R10R12

R9R11

R13

D1

D2

D3

D4

D5

D8D7

Pwr-Power

Supply

Open state

supervision

Seal-in of closing

Auto-reclosingAuto-

Reclosing

Anti pump

Manual

ClosingManual

Trip

Manual closing

Manual tripping

Protect

Trip

Protection tripping

Seal-in of tripping

Closed state

supervision

Low pressure to

block closing

Low pressure to block

tripping

Low pressure to

block tripping and

closing

Low pressure to

block closing

Low pressure to

block tripping

Low pressure to

block tripping and

closing

To TWJ-

To HWJ-

Closing circuit with latch

Tripping circuit with latch

CC52b

TC

52a

Figure 3.2-1 Principle of control circuit module with single tripping coil

The rear terminals of control circuit module with single tripping coil are shown in the following

table.

Pin No. Sign Description

01 Pwr+ Positive pole of power supply

02 In_ManCls Input of manual closing

03 CC To closing coil

04 In_ManTrp Input of manual tripping

05 TC To tripping coil

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08~06 KKJ-1 Binary output 1 of post closing position

08~07 TWJ2-1 Binary output 1 of open position relay 2

08 Common_1 Common terminal 1

09 TWJ2-2 Binary output 2 of open position relay 2

10 KKJ-2 Binary output 2 of post closing position

11 TWJ- Negative pole of power supply for open position relay

12 In_AR Input of automatic reclosure

13 HWJ- Negative pole of power supply for closed position relay

14 In_LowPres_Cls Input of low pressure to block closing circuit breaker

15 Pwr- Negative pole of power supply

16 In_LowPres_Trp Input of low pressure to block tripping circuit breaker


18 In_LowPres_Trp&Cls Input of low pressure to block tripping and closing circuit breaker

21~19 HWJ2 Binary output of closed position relay 2

20 In_ProtTrp Input of protection tripping


25~22 HYJ2 Binary output of low pressure to block closing circuit breaker

25~23 BO_TCCS Binary output of control circuit failure

25~24 TYJ2 Binary output of low pressure to block tripping circuit breaker


26~30 TWJ1 Binary output of open position relay 1


28~30 HWJ1 Binary output of closed position relay 1


3.2.1 Power Supply

Auxiliary power for control relays of circuit breaker is supplied via terminal n1 and n15.

3.2.2 Circuit Breaker Open State Supervision

The auxiliary relays TWJ1, TWJ2 and TWJ3 are applied to supervise the open state of Circuit

breaker when terminal n11 is connected to the negative pole of power supply in series with normal

closed auxiliary contact of circuit breaker (52b).

In addition, if terminal n11 is connected with normal closed auxiliary contact of circuit breaker (52b)

and its close coil (CC), TWJ1, TWJ2 and TWJ3 can provide supervision on close coil as well.

Indicator L1 in green shows the open state of circuit breaker, and it can be seen on the faceplate

with designation 52b.

3.2.3 Closing Circuit

Auto reclosing signal comes from terminal n12, while manual closing signal comes from n2.

Terminal n3 shall be connected to close coil (CC) in series with normal closed auxiliary contact of

circuit breaker (52b).

3 Operation Theory


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HBJ is a seal-in auxiliary relay, which pickup current is adaptive to the closing current in the range

of 0.5A-4A. If the closing current is greater than 4A, an additional resistor-R1 can be added.

As shown in Figure 3.2-1, after the protection device sends closing command, the circuit is

conducted through the normally closed contact of anti-pump relay TBJV, the seal-in relay HBJ,

the normally closed auxiliary contact of circuit breaker 52b and closing coil CC. The seal-in

relay HBJ will operate, and its normally open contact HBJ will be closed. The closing circuit with

latch will be conducted through the normally open contact HBJ, the normally closed contact of

anti-pump relay TBJV, the seal-in relay HBJ, the normally closed auxiliary contact of circuit

breaker 52b and closing coil CC until the normally closed auxiliary contact of circuit breaker

52b is open. This circuit ensures that circuit breaker is still closed reliably even if the closing

command from the protection device has dropped off.

TBJV is the anti-pump relay; please refer to section 3.2.6 for details. This function can be released

by shortening S2 to bypass the normal closed contacts of TBJV.

Low pressure blocking function for manual closing is achieved by normal closed contact of HYJ1

and HYJ2; please refer to section 3.2.8 for details. This function can be released by shortening S1,

to bypass the normal closed contact of HYJ1 and HYJ2.

3.2.4 Trip Circuit

Protection trip signal comes from terminal n20, while manual trip signal comes from n4.

Terminal n5 shall be connected to trip coil (TC) in series with normal open auxiliary contact of

circuit breaker (52a).

TBJ is a seal-in auxiliary relay, which pickup current is adaptive to the trip current in the range of

0.5A-4A. If the trip current is greater than 4A, an additional resistor-R2 can be added. TBJ is also

used in anti-pump circuit, please refer to section 3.2.6.

As shown in Figure 3.2-1, after the protection device sends tripping command, the circuit is

conducted through the normally closed contact of tripping pressure relay TYJ1 and TYJ2, the

seal-in relay TBJ, the normally open auxiliary contact of circuit breaker 52a and tripping coil

TC. The seal-in relay TBJ will operate, and its normally open contact TBJ will be closed. The

tripping circuit with latch will be conducted through the normally open contact TBJ, the normally

closed contact of tripping pressure relay TYJ1 and TYJ2, the seal-in relay TBJ, the normally

open auxiliary contact of circuit breaker 52a and tripping coil TC until the normally open

auxiliary contact of circuit breaker 52a is open. This circuit ensures that circuit breaker is still

open reliably even if the tripping command from the protection device has dropped off.

Low pressure blocking function for trip is achieved by normal closed contact of TYJ1 and TYJ2;

please refer to section 3.2.8 for details. This function can be released by shortening S3 to bypass

the normal closed contact of TYJ1 and TYJ2.

3.2.5 KKJ

KKJ is an bi-stable auxiliary relay. When circuit breaker is closed manually, the relay KKJ will pick

up and latch, when circuit breaker is tripped manually, the relay KKJ will reset. The normal open

contact of KKJ can be used together with normal closed auxiliary contact of circuit breaker (52b),

3 Operation Theory


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to initiate auto-reclosure in case that circuit breaker trips especially without any trip commands

from protection and manual switch.

3.2.6 Anti-pump

Anti-pump function is achieved via auxiliary relay TBJV.

In the event that a breaker is closed into a fault, while the operator is applying a close signal via a

closed control switch, the circuit breaker will trip and prevent closing again until the closing circuit

has been de-energized by the operator's releasing the control switch.

When trip signal comes and at the same time close signal persists, the contact of TBJ will close

and TBJV will operate and keep sealed with its own normal open contact. The normal closed

contact of TBJV will cut off closing circuit to prevent any further closing.

If there is anti-pump circuit in circuit breaker itself, the anti-pump function of this relay set can be

released by shortening S2 to bypass the normal closed contact of TBJV.

3 Operation Theory


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3.2.7 Circuit Breaker Closed State Supervision

The auxiliary relays HWJ1, HWJ2 are applied to supervise the closed state of Circuit breaker

when terminal n13 is connected to the negative pole of power supply in series with normal open

auxiliary contact of circuit breaker (52a).

In addition, if terminal n13 is connected to normal open auxiliary contact of circuit breaker (52a)

and its trip coil (TC), HWJ1, HWJ2 can provide supervision on trip coil as well.

Indicator L2 in red shows the closed state of circuit breaker, and it can be seen on the faceplate

with designation 52a.

3.2.8 Pressure Supervision

Three levels of pressure are provided: Low pressure to inhibit closing from terminal n14, low

pressure to inhibit trip from terminal n16, and low pressure to inhibit switching (both closing and

trip) from n18. The normal closed contacts of HYJ1 and HYJ2 are put in closing circuit, while the

normal closed contacts of TYJ1 and TYJ2 are put in trip circuit.

3.2.9 Spare Contacts

The device provides some reserved auxiliary contacts also, used to cooperate with other

protectors to realize other functions, which is shown in Figure 3.2-2.

n8 n6

n7

n21 n17

n19

n25 n24

n22

n23

n27n29

n9n10

n30 n26

n28

Figure 3.2-2 Output contacts of control circuit with single tripping coil

3.3 Seal-in Module

Principle and contact output for current retain module are shown in Figure 3.3-1.

3 Operation Theory


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D7 D8

D1

R1R2

J1

n1

n8 n7

D13 D14

D4

R11R12

J4

n4

n14 n13

D9 D10

D2

R3R4

J2

n2

n10 n9

D15 D16

D5

R9

R10

J5

n5

n16 n15

D11 D12

D3

R5R6

J3

n3

n12 n11

D17 D18

D6

R7R8

J6

n6

n18 n17

n19n20

n22

n24

n21

n23

n25n26

n28

n30

n27

n29

J4

J5

J6

J1

J2

J3

Figure 3.3-1 Principle and contact output for seal-in module

The rear terminals of seal-in module are shown in the following table.


01 In_SIG1 Input terminal of signal for J1 relay






07 Out_SIG1 Output terminal of signal for J1 relay

08 Pwr+_1 The positive polarity of power supply for J1 relay











19~20 J1 The normally open contact of J1 relay






3 Operation Theory


Date: 2012-03-29

Current seal-in module provides six identical DC seal-in relays. Select corresponding parallel

resistance (R2, R4, R6, R8, R10 and R12, cannot be used when DC seal-in current is less or

equal to 4A) for each DC seal-in relay according to DC seal-in current in the field.

Terminals n8, n10, n12, n14, n16, n18 are connected to positive pole of power supply, combined

with output contacts provided by relevant relay can realize seal-in function. Terminals n7, n9, n11,

n13, n15 and n17 are connected to negative pole of power supply through tripping coil or closing

coil. n1, n2, n3, n4, n5 and n6 are connected to tripping contacts of protective device.

3.4 Voltage Switchover Module with Latch

The principle and contact output of voltage switchover module with latch are shown in Figure

3.4-1.

n5

n6

n7

n10

n13

n8

n9

n11

n12

D17 D18

L1

R11 L2R12

n1

n2

n29

n30

n16 n14

n15

n17

n18

n19

n22

n25

n20

n21

n23

n24

n28 n26

n27

n3

n4

D8

D16

D1 D2

R9 R10

Aux-

Aux+

NO on BB1

NC on BB1

NO on BB2

NC on BB2

Figure 3.4-1 Principle and contact output of voltage switchover module with latch

Where:

NO on BB1: Normally open contact of disconnector on busbar 1

NC on BB1: Normally closed contact of disconnector on busbar 1

NO on BB2: Normally open contact of disconnector on busbar 2

NC on BB2: Normally closed contact of disconnector on busbar 2

The rear terminals of voltage switchover module with latch are shown in the following table.

3 Operation Theory


Date: 2012-03-29


01 In_NO_DSBB1 Input of auxiliary normally open contact of disconnector switch on busbar 1

02 In_NC_DSBB1 Input of auxiliary normally closed contact of disconnector switch on busbar 1


04 In_NC_DSBB2 Input of auxiliary normally closed contact of disconnector switch on busbar 2

05 1U_1-1 Phase voltage input of busbar 1 of 1st group


07 1U1 Phase voltage output after switching







14 1U_1-4 Start connection input of busbar 1 of 1st group


16 1U4 Start connection input of after switching

17 2U_1-1 Phase voltage input of busbar 1 of 2nd group









26~28 BO_LossVolt It is closed when two busbar lose voltage (i.e. neither of switching relays of

two busbars operates.)

27~28 BO_OpSimul It is closed when switching relays of bus1 and switching relays of bus 2

operate at same time.

28 Common Common terminal

29 Pwr+ Positive pole of power supply for the module

30 Pwr- Negative pole of power supply for the module

This module is used to switch voltage between two buses VT, for double busbars arrangement,

voltage can be automatically switched between two buses based on the state of isolator, the

device can be connected with the voltage of busbar or busbar . The state of isolator can be

reflected through normally closed and normally open auxiliary contacts of isolator of the line.

Isolator can provide a normally open and a normally closed auxiliary contact, its principle and

3 Operation Theory


Date: 2012-03-29

output contacts are shown in Figure 3.4-1. If field isolator can only provide a couple of normally

open auxiliary contacts, after parallel connecting n1 and n4, connect to normally open contact of

busbar , after n2 and n3 are parallel connected, they are connected to the normally open contact

of busbar . N29 and n30 will be connected to the positive and negative poles of power supply

respectively.

Signal indicator LED L1 (green) and L2 (green) indicate this feeder is either connected to busbar

or busbar respectively.

3.5 Voltage Switchover Module without Latch

The principle and output contact of voltage switchover module without latch are shown in Figure

3.5-1.

n5

n6

n7

n10

n13

n8

n9

n11

n12

L1

L2

n1

n29

n30

n16 n14

n15

n17

n18

n19

n22

n25

n20

n21

n23

n24

n28 n26

n27

n3

D8

D1 D2

NO on BB2

AUX-

AUX+

NO on BB1

Figure 3.5-1 Principle and output contact of voltage switchover module without latch

The rear terminals of voltage switchover module without latch are shown in the following table.



02 Blank


04 Blank






3 Operation Theory


Date: 2012-03-29







16 1U4 Start connection input of after switching










26~28 BO_LossVolt It is closed when two busbar lose voltage (i.e. neither of switching relays of

two busbars operates.)

27~28 BO_OpSimul It is closed when switching relays of bus1 and switching relays of bus 2

operate at same time.

28 Common Common terminal

29 Pwr+ Positive pole of power supply for the module

30 Pwr- Negative pole of power supply for the module

The functions of voltage switchover module without latch are the same as that of voltage

switchover module with latch. The difference lies in that all relays cannot be latched. It will acts

when normally open contact of isolator is closed, and return when it is open.

When the signal of normally open auxiliary contact of isolator is lost, the device will output

alarming signal through n28 and n26.

Signal indicator LED L1 (green) and L2 (green) indicate that this feeder is either connected to

busbar or busbar respectively.

3.6 LOCKOUT-A Module

LOCKOUT-A module is composed of three LOCKOUT circuits, the relays are all magnetic latching

relays. To meet different applications, five options are provided at present, they are distinct in

terms of principle and configuration of output contacts.

Type 1: shown in Figure 3.6-1, composed of three sets of LOCKOUT circuits, each set will output

three pairs of normally open contacts.

3 Operation Theory


Date: 2012-03-29

n7n8

n10

n12

n9

n11

n2

n13n14

n16

n18

n15

n17

L1

D1 D2

J1 J2

n1

n3

n4

J2

J1

J3

J1

J3

J2

J4

D3 D4

R1 R2

R3 R4

D5 D6

J3 J4n5

n6D7 D8

R5 R6

R7 R8

D9 D10

J5 J6n25

n26D11 D12

R9 R10

R11R12

R13 R14

n19n20

n22

n24

n21

n23

J5

J5

J6J4

J6

Pwr+

Reset 3

Trigger 3

Pwr-

Reset 1

Trigger 1

Reset 2

Trigger 2

Figure 3.6-1 Principle and output contact of LOCKOUT-A module (type 1)

Type 2: shown in Figure 3.6-2, composed of three LOCKOUT circuit, each set will output two

couple of normally open contacts and a set of normally closed contact.

n7n8

n10

n12

n9

n11

n2

n13n14

n16

n18

n15

n17

L1Pwr+

D1 D2

J1 J2

n1

n3

n4

J2

J1

J3

J1

J3

J2

J4

D3 D4

R1 R2

R3 R4

D5 D6

J3 J4n5

n6D7 D8

R5 R6

R7 R8

D9 D10

J5 J6n25

n26D11 D12

R9 R10

R11 R12

R13 R14

n19n20

n22

n24

n21

n23

J5

J5

J6J4

J6

Pwr-

Trigger 1

Reset 1

Trigger 2

Reset 2

Trigger 3

Reset 3


Type 3: shown in Figure 3.6-3, three LOCKOUT circuits are parallel connected to form a set of

LOCKOUT circuits, outputting nine pairs of normally open contacts in total.

3 Operation Theory


Date: 2012-03-29

n7n8

n10

n12

n9

n11

n2

n13n14

n16

n18

n15

n17

L1

D1 D2

J1 J2

n1

n3

n4

J2

J1

J3

J1

J3

J2

J4

D3 D4

R1 R2

R3 R4

D5 D6

J3 J4

D7 D8

R5 R6

R7 R8

D9 D10

J5 J6

D11 D12

R9 R10

R11 R12

R13 R14

n19n20

n22

n24

n21

n23

J5

J5

J6J4

J6

Pwr-

Pwr+

Trigger

Reset


Type 4: shown in Figure 3.6-4, it is composed of three sets of LOCKOUT circuits, outputs five pairs

of normally open contacts and four pairs of normally closed contacts in total.

n7n8

n10

n12

n9

n11

n2

n13n14

n16

n18

n15

n17

L1

D1 D2

J1 J2

n1

n3

n4

J2

J1

J3

J1

J3

J2

J4

D3 D4

R1 R2

R3 R4

D5 D6

J3 J4n5

n6D7 D8

R5 R6

R7 R8

D9 D10

J5 J6n25

n26D11 D12

R9 R10

R11 R12

R13 R14

n19n20

n22

n24

n21

n23

J5

J5

J6

J4

J6

Pwr+

Pwr-

Trigger 1

Reset 1

Trigger 2

Reset 2

Trigger 3

Reset 3


Type 5: shown in Figure 3.6-5, three sets of LOCKOUT circuits are in parallel to form a set of

LOCKOUT circuit, outputting nine pairs of normally open contacts, which each pair of connecting

contacts are formed by parallel connecting the contacts of two different relays.

3 Operation Theory


Date: 2012-03-29

n7n8

n2 L1

D1 D2

J1 J2

n1

n3

n4

J4

J1

D5 D6

R1 R2

R3 R4

D9 D10

J5 J6

D13 D14

R5 R6

R7 R8

D17 D18

J9 J10

D21 D22

R9 R10

R11 R12

R13 R14

J8

J12

D3 D4

J3 J4

D7 D8

D11 D12

J7 J8

D15 D16

D19 D20

J11 J12

D23 D24

J2

n10J1

J2

n9

n12J3

J4

n14J5

J6

n11

n13

n16J5

J6

n18J7

J8

n15

n17

n20J9

J10

n19

n22J9

J10

n24J11

J12

n21

n23

Trigger

Reset

Pwr+

Pwr-


Terminals n3, n5 and n25 are input terminals for action signal, terminals n4, n6 and n26 are input

terminals for reseting signal. n2 and n1 terminals are connected with the positive and negative

poles of operation power supply respectively. Signal indicator LED L1 is normally light (red) shows

LOCKOUT circuit acts.

3.7 LOCKOUT-B Module

LOCKOUT-B module only provides a set of LOCKOUT circuits. Its principle and output contacts

are shown in Figure 3.7-1. The J1~J4 in the Figure 3.7-1 are magnetic latching relays, J5 is not

magnetic latching relay.

n3 terminal is action signal input terminal, n4 terminal is input terminal of resetting signal. n2 and

n1 terminals are connected to the positive and negative poles of operation power supply

respectively. Indicator L1 is normally lit (red), indicating the action of LOCKOUT circuit.

n7n8

n12

n16

n11

n15

n2

n20 n19

n9n10

n14

n18

n13

n17

L1

D2

D1

J1 J2 J3 J4

n1

n3

n4

J4

J1 J1

J2 J2

J3 J3

J4

J5

D9

n22 n21 n24 n23J5 J5

Pwr+

Pwr-

Tigger

Reset

Figure 3.7-1 Principle and output contact of LOCKOUT-B module

3 Operation Theory


Date: 2012-03-29

3.8 Repeat Relay Module

Repeat relay module has four independent circuits, each provides three output contacts, some of

which can be configured as normally open or normally closed contacts. The principle and output

contacts are shown in Figure 3.8-1.

n4, n6, n8 and n10 are action signal input terminal, n2 is connected to negative pole of operation

power supply.

D4

n4

D3

R8 R7 R6 R5T1 T2

D2

n6

D1

R4 R3 R2 R1T3 T4

D6

n8

D5

R12 R11 R10 R9T5 T6

D8

n10

D7

T7 T8R16 R15 R14 R13

n2

n18n17

n19

n21

n20

n22

n11 n12

n3

0n29

n1

n5

n3

n7

T1 T5

T1 T6

T2 T6

T3

n14n13

n15 n16

n26n25

n27

n23

n28

n24

T3

T7

T4

T7

T8

Figure 3.8-1 Principle and output contact of repeat relay module

The rear terminals of repeat relay module are shown in the following table.


01~03 BO_Trp_6-1 Binary output 1 of tripping relay 6 (normally open contact)

02 Pwr- Negative pole of power supply for 4 signal inputs

04 In_SIG1 Input of 1st signal


06 In_SIG2 Input of 2nd signal

08 In_SIG3 Input of 3rd signal

09 Blank Not used

10 In_SIG4 Input of 4th signal



15~16 BO_Trp_4 Binary output of tripping relay 4 (normally open contact)




3 Operation Theory


Date: 2012-03-29





3.9 Control Circuit Module (Double Tripping Coils)

This module consists of three cards-A, B and C, and provides control circuit for a three-phase

circuit breaker with two trip coils.

3.9.1 Power Supply and Its Supervision

Two auxiliary power supplies are used.

Auxiliary power 1 is supplied via terminal nA1 and nA29 to the circuits of open state supervision,

manual trip, manual closing, auto-reclosing, protection trip 1, closed state supervision 1, and

anti-pump circuit.

Auxiliary power 2 is supplied via terminal nA3 and nC10 to the circuits of closed state supervision

2 and protection trip 2.

These two power supplies are supervised by relays 1JJ, 2JJ, 3JJ and 4JJ.

3 Operation Theory


Date: 2012-03-29

PS +

nA1 nA29nB2L1

nB30

nA9

S2

S1

nA11

D4

D2

D3

R1

R1'

HYJ1

HYJ2

nA5

nA7

SHKKJ STKKJ

D1 S4

nA13

TYJ1 nA15TC1

TC2

HWJ3HWJ2HWJ1

L2nB2

HWJ6HWJ5HWJ4

L3nA3nB1

nB29

nB13

S3

TYJ2 nA19

nA17

nC6 nC12

nC4

nC2

nC10

nC8

nC3

nA21

nC1

nA22

nA18

nA20

R0

R0'

R2

R2'

CC

AUX1+ AUX1-Power Supply1

Open state

supervision

Seal-in of closing

Auto-reclosing

Anti-pump

Manual closing

Manual

tripping

Protection

tripping

Seal-in of trip

Closed state

supervision

Low pressure to

block closing

Low pressure to

block tripping

Low pressure to

block tripping and

closing

Trip

Co

il 1

Power

supply 2

Trip

Co

il 2

Manual tripProtection

trip

Seal-in of trip

Power

supply after

switching

Po

we

r su

pp

ly

Sw

itch

ove

r

Po

we

r su

pp

ly

su

pe

rvis

on

PS2

PS1

PS1

PS2

Low pressure to

block AR

Auto-Reclosing

Manual Closing

Manual Trip

Protection Trip 1

AUX2+AUX2-

Protection Trip 2

PS -

Low pressure to

block closing

Low pressure to

blocking tripping

Low pressure to

block tripping and

closing

Low pressure to

block AR

52b

52a

52a

Closed state

supervision

Figure 3.9-1 Principle of control circuit module with double tripping coils

The rear terminals of control circuit module with double tripping coils (card A) are shown in the

following table.


01 Pwr+_1 Positive pole of power supply for 1st tripping coil

02~04 SHKKJ-1 Binary output 1 of post closing position

03 Pwr+_2 Positive pole of power supply for 2nd tripping coil

05 In_ManCls Input of manual closing

14~06 STKKJ-1 Binary output 1 of post tripping position

07 In_ManTrp Input of manual tripping

3 Operation Theory


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14~08 STJ Binary output of manual tripping

09 In_AR Input of automatic reclosure

14~10 TYJ2 Binary output 2 of low pressure to block tripping circuit breaker

11 CC To closing coil

14~12 HYJ2 Binary output 2 of low pressure to block closing circuit breaker

13 In_ProtTrp_1 Input 1 of protection tripping


15 TC_1 To tripping coil 1

16 Blank Not used

17 In_ProtTrp_2 Input 2 of protection tripping

18 In_LowPres_Trp Input of low pressure to block tripping circuit breaker

19 TC_2 To tripping coil 1

20 In_LowPres_Trp&Cls Input of low pressure to block tripping and closing circuit breaker

21 Pres_Pwr- Negative pole of power supply for pressure blocking circuit

22 In_LowPres_Cls Input of low pressure to block closing circuit breaker


23~24 HYJ1 Binary output 1 of low pressure to block closing circuit breaker

23~25 SHKKJ-2 Binary output 2 of post closing position

23~26 TYJ1 Binary output 1 of low pressure to block tripping circuit breaker

23~27 STKKJ-2 Binary output 2 of post tripping position

28 Blank Not used

29 Pwr-_1 Negative pole of power supply for 1st tripping coil

30 Blank Not used

The rear terminals of control circuit module with double tripping coils (card B) are shown in the

following table.








07~24 HWJ1-1 Binary output 1 of closed position relay 1





12 Blank Not used

13 52a_Pwr-_2 Negative pole of power supply for closed position relay of 2nd tripping coil




3 Operation Theory


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04~17 TWJ2-2 Binary output 2 of closed position relay 2


19 Blank Not used

20 Blank Not used

05~21 BO_TCCS_1 Binary output of control circuit failure of 1st tripping coil

05~22 BO_TCCS_2 Binary output of control circuit failure of 2nd tripping coil

29 52a_Pwr-_1 Negative pole of power supply for closed position relay of 1st tripping coil

30 TWJ- Negative pole of power supply for open position relay

The rear terminals of control circuit module with double tripping coils (card C) are shown in the

following table.


01 AR_Pres_Pwr+ Positive pole of power supply for low pressure blocking AR


03 AR_Pres_Pwr - Negative pole of power supply for low pressure blocking AR


05~07 CHYJ1-1 Binary output 1 of the relay 1 of low pressure to block AR (normally closed

contact)

06 Pwr+_3 Positive pole of power supply for 3rd tripping coil

08 Pwr-_1 Negative pole of power supply for 1st tripping coil

09~11 CHYJ2-1 Binary output 1 of the

relay 2 of low pressure to block AR (normally closed

contact)

10 Pwr-_2 Negative pole of power supply for 2nd tripping coil

12 Pwr-_3 Negative pole of power supply for 3rd tripping coil


relay 1 of low pressure to block AR (normally open

contact)

14~16 3JJ-1 Binary output 1 of power supply switch 3 (normally closed contact)


relay 2 of low pressure to block AR (normally open

contact)

18~20 4JJ-1 Binary output 1 of power supply switch 4 (normally closed contact)

21 Blank

22~24 3JJ-2 Binary output 2 of power supply switch 3 (normally open contact)

23 Blank Not used

25 Blank Not used

26~28 4JJ-2 Binary output 2 of power supply switch 4 (normally open contact)

27 Blank Not used

29 Blank Not used

30 Blank Not used

The low-pressure supervision circuit is commonly used by the two control circuits, so it is powered

by either of the power supplies via switchover circuit. If auxiliary power 1 is normal, and then it will

be used for low-pressure supervision, while if it fails, auxiliary power 2 will take the place. The

switchover is achieved via contacts of 1JJ and 2JJ.

3 Operation Theory


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3.9.2 Circuit Breaker Open State Supervision

The auxiliary relays TWJ1, TWJ2 and TWJ3 are applied to supervise the open state of Circuit

breaker when terminal nB30 is connected to the negative pole of power supply in series with

normal closed auxiliary contact of circuit breaker (52b).

In addition, if terminal nB30 is connected with normal closed auxiliary contact of circuit breaker

(52b) and its close coil (CC), as dashed line between nB30 and nA11 shows in Figure 3.9-1, TWJ1,

TWJ2 and TWJ3 can provide supervision on close coil (CC) as well.

Indicator L1 in green shows the open state of circuit breaker, and it can be seen on the faceplate

with designation 52b.

3.9.3 Closing Circuit

Auto reclosing signal comes from terminal nA9, while manual closing signal comes from nA5.

Terminal nA11 shall be connected to close coil (CC) in series with normal closed auxiliary contact

of circuit breaker (52b).

HBJ is a seal-in auxiliary relay, which pickup current is adaptive to the closing current in the range

of 0.5A-4A. If the closing current is greater than 4A, an additional resistor-R1 can be added. (See

section 3.2.3 about closing circuit with latching)

TBJV is the anti-pump relay; please refer to secion 3.9.6 for details. This function can be released

by shortening S2 to bypass the normal closed contacts of TBJV.

Low pressure blocking function for manual closing is achieved by normal closed contact of HYJ1

and HYJ2; please refer to section 3.9.10 for details. This function can be released by shortening

S1 to bypass the normal closed contact of HYJ1 and HYJ2.

3.9.4 Trip Circuit 1

Protection trip signal comes from terminal nA13, while manual trip signal comes from nA7. The

relay STJ in manual trip circuit provides multiplicated contacts for trip circuit 2, please refer to

section 3.9.9.

Terminal nA15 shall be connected to trip coil (TC1) in series with normal open auxiliary contact of


TBJ1 is a seal-in auxiliary relay, which pickup current is adaptive to the trip current in the range of

0.5A-4A. If the trip current is greater than 4A, an additional resistor-R0 can be added. TBJ1 is also

used in anti-pump circuit, please refer to section 3.9.6. (See section 3.2.4 about tripping circuit

with latching)

Low pressure blocking function for trip is achieved by normal closed contact of TYJ1; please refer

to section 3.9.10 for details. This function can be released by shortening S4 to bypass the normal

closed contact of TYJ1.

3.9.5 SHKKJ and STKKJ

SHKKJ and STKKJ are bistable auxiliary relays. When circuit breaker is closed manually, the relay

3 Operation Theory


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SHKKJ will pick up and latch and STKKY will reset. When circuit breaker is tripped manually, the

relay SHKKJ will reset and STKKJ will operate and latch. The normal open contact of SHKKJ can

be used together with normal closed auxiliary contact of circuit breaker (52b), to initiate

auto-reclosure in case that circuit breaker trips especially without any trip commands from

protection and manual switch.

3.9.6 Anti-pump

Anti-pump function is achieved via auxiliary relay TBJV.

In the event that a breaker is closed into a fault, while the operator is applying a close signal via a

closed control switch, the circuit breaker will trip and prevent closing again until the closing circuit

has been de-energized by the operator's releasing the control switch.

When trip signal comes and at the same time close signal persists, the contact of TBJ1 and/or

TBJ2 will close and TBJV will operate and keep sealed with its own normal open contact. The

normal closed contacts of TBJV will cut off closing circuit to prevent any further closing.

If there is anti-pump circuit in circuit breaker itself, the anti-pump function of this relay set can be

released by shortening S2 to bypass the normal closed contacts of TBJV.

3.9.7 Circuit Breaker Closed State Supervision circuit 1

This supervision circuit is associated with the trip coil 1.

The auxiliary relays HWJ1, HWJ2 and HWJ3 are applied to supervise the closed state of circuit


normal open auxiliary contact of circuit breaker (52a).

In addition, if terminal nB29 is connected to normal open auxiliary contact of circuit breaker (52a)

and its trip coil (TC1), as dashed line between nB29 and nA15 shows in the Figure 3.9-1, HWJ1,

HWJ2 and HWJ3 can provide supervision on trip coil as well.


with designation 52a-1.

3.9.8 Circuit Breaker Closed State Supervision circuit 2

This supervision circuit is associated with the trip coil 2.

The auxiliary relays HWJ4, HWJ5 and HWJ6 are applied to supervise the closed state of circuit


normal open auxiliary contact of circuit breaker (52a).

In addition, if terminal nB13 is connected to normal open auxiliary contact of circuit breaker (52a)

and its trip coil (TC2), as dashed line between nB13 and nA19 shows in the Figure 3.9-1, HWJ4,

HWJ5 and HWJ6 can provide supervision on trip coil as well.


with designation 52a-2.

3 Operation Theory


Date: 2012-03-29

3.9.9 Trip Circuit 2

Protection trip signal comes from terminal nA17, while manual trip signal comes from multiplicated

contact of STJ, please refer to section 3.9.4.

Terminal nA19 shall be connected to trip coil (TC2) in series with normal open auxiliary contact of


TBJ2 is a seal-in auxiliary relay, which pickup current is adaptive to the trip current in the range of

0.5A-4A. If the trip current is greater than 4A, an additional resistor-R2 can be added. TBJ2 is also

used in anti-pump circuit, please refer to section 3.9.6. (See section 3.2.4 about tripping circuit

with latching)

Low pressure blocking function for trip is achieved by normal closed contact of TYJ2; please refer

to section 3.9.10 for details. This function can be released by shortening S3 to bypass the normal

closed contact of TYJ2.

3.9.10 Pressure Supervision

Four levels of pressure are provided: Low pressure to inhibit auto-closing from terminal nC1, Low

pressure to inhibit closing from terminal nA22, low pressure to inhibit trip from terminal nA18, and

low pressure to inhibit switching (both closing and trip) from nA20. The normal closed contacts of

CHYJ1 and CHHYJ2 are provided to inhibit auto-reclosing, the normal closed contacts of HYJ1

and HYJ2 are put in manual closing circuit, while the normal closed contacts of TYJ1 and TYJ2 are

put in trip circuit.

3.9.11 Spare Contacts

Some spare contacts are provided for further applications, as shown in Figure 3.9-2.

TWJ3 HWJ3

HWJ6nB5 nB21

nB22

nC14 nC16

nC22

3JJ

nC243JJ

nC18 nC20

nC26

4JJ

nC284JJ

nC5 nC7

nC13

CHYJ1

nC15CHYJ1

nC9 nC11

nC17

CHYJ2

nC19CHYJ2

nA2 nA4SHKKJ

nA14 nA6STKKJ

nA8

nA10

nA12

STJ

TYJ2

HYJ2

nA23 nA25SHKKJ

nA27

nA24

nA26

STKKJ

HYJ1

TYJ1

nB6 nB23TWJ1

nB9 nB26TWJ2

nB4 nB17TWJ2

HWJ2 HWJ5nB18

nB3 nB14TWJ1

nB15

nB16

HWJ1

HWJ4

nB7 nB24HWJ1

nB8 nB25HWJ4

nB10 nB27HWJ2

nB11 nB28HWJ5

Figure 3.9-2 Output contacts of control circuit with double tripping coils

3 Operation Theory


Date: 2012-03-29

3.10 Voltage Parallel Module

The principle and output contact output for voltage parallel module is shown in Figure 3.10-1.

This module is used to the parallel connection to various voltage circuits. For double busbar

arrangement, if one bus VT of both is out of service, then the signals of protection and

measurement of voltage of all feeders connected with this bus shall use another bus VT (two

buses shall operate in parallel).

If parallel input circuit is latching circuit (such as most manual parallel), then connect the parallel

connecting input contact between positive pole and n1 terminal of DC power supply.

If parallel input circuit is not latching circuit (such as remote parallel, separation), then connect the

parallel and separation input contacts between n3 and n4 terminals of DC power supply

respectively.

N2 and n5 terminals are connected with the positive and negative poles of power supply

respectively.

When the parallel circuit operates, the indicator LED LD1 will be normally lit (red).

D2

n1

D1

R7R8J1 J2

n2

D3

R5R6

J3

J5

n3 R3R4

J4 J6

D8

n4

D7

J7

R1R2

n5

n7n8

n10

n12

n9

n11

n14 n13

n19n20

n22

n24

n21

n23

J3 J6

J3 J6

J2 J5

J2

n15n16

n18 n17

n25n26

n28

n30

n27

n29

J1

J5

J1

J4

J4

D5D4 D6

LD1

R9

D9J7

J7

Pwr-

Pwr+

Local paralleling

Remote paralleling

Remote separation

Figure 3.10-1 Principle and output contact of voltage parallel module

The rear terminals of voltage parallel module are shown in the following table.


01 LocalParalle Local paralleling signal input

02 Pwr+ Positive pole of power supply for voltage parallel module

03 RemoteParalle Remote paralleling signal input

04 RemoteSeparate Remote separating signal input

05 Pwr- Negative pole of power supply for voltage parallel module

06 Blank

3 Operation Theory


Date: 2012-03-29

07~08 J3-1 Normally open contact 1 of the J3 relay










27~28 J4-1 Normally closed contact 1 of the J4 relay


4 Hardware


Date: 2012-03-29

4 Hardware

4.1 Overview

All CJX series devices have 14 slots, different types of CJX device is assembled by different

modules combined with different integral panel.

4.1.1 CJX-01

F E C B A 9 8 7 6 5 4 3 2 1

52b

52a

52b

52a

ON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

52b

52a

52b

52a

Figure 4.1-1 CJX-01 panel layout

CJX-01 can be equipped with four control circuit modules (single tripping coil) and four voltage

switch modules (with latch or without latch) at most, Figure 4.1-1 shows the front view layout of

panel, 6-9 slots are control circuit modules, B~F slots are voltage switchover modules. Definitions

of indicators on panel are as follows:

ON BB1 and ON BB2 indicators are green, provided by voltage switchover module, used to

indicate the current position of bus.

52b: indicator is red and 52a: indicator is red, provided by control circuit module, used to

indicate the current state of circuit breaker.

When the slot is not inserted by module, the corresponding indicator on panel is blank. Other blank

module slots can adopt modules without indicator on demand, such as seal-in module or repeat

relay module, and etc. (the same as below).

4 Hardware


Date: 2012-03-29

4.1.2 CJX-02

F E C B A 9 8 7 6 5 4 3 2 1

LOCKOUT LOCKOUT LOCKOUTLOCKOUT LOCKOUT LOCKOUT LOCKOUTLOCKOUT


CJX-02 can be equipped with eight LOCKOUT modules in 7-F slots. Figure 4.1-2 shows the front

view layout of the panel. The LOCKOUT indicator on the panel is red, provided by LOCKOUT

module, and is lit when LOCKOUT circuit acts, and is extinguished when it is restored.

4.1.3 CJX-03

F E C B A 9 8 7 6 5 4 3 2 1


CJX-03 has several options of some seal-in modules or repeat relay modules, the specific

configuration is determined according to the actual demand.

Figure 4.1-3 shows the front view layout of the panel, without indicators.

4 Hardware


Date: 2012-03-29

4.1.4 CJX-04

PARAL PARAL PARALON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

ON BB1

ON BB2

F E C B A 9 8 7 6 5 4 3 2 1


CJX-04 can be equipped with three voltage parallel modules in 2~4 slots, and equipped with ten

voltage switchover modules in 5~F slots. Figure 4.1-4 is the front view layout of the panel, and

definitions of indicators on the panel are as follows:

ON BB1 and ON BB2 indicators are red, provided by voltage switchover modules, used to


PARAL indicator is red, provided by voltage parallel modules, is lit when they are operated in

parallel, and extinguished when they are running separately.

4.1.5 CJX-11

F E C B A 9 8 7 6 5 4 3 2 1

52b

52a

52b

52a

ON BB1

ON BB2

ON BB1

ON BB2


CJX-11 is fixed in 8 and 9 slots, equipped with two control circuit modules, and equipped with two

voltage switch modules in E and F slots.

Figure 4.1-5 is the front view layout of the device, definitions of indicators on the panel are as

follows:

ON BB1 and ON BB2 indicators are red, provided by voltage switchover module, used to

4 Hardware


Date: 2012-03-29


52b indicator is red, 52a indicator is green, provided by control circuit, used to indicate the

current state of circuit breaker.

4.1.6 CJX-21

F E C B A 9 8 7 6 5 4 3 2 1

52a_2

52b

52a_1

ON BB1

ON BB2

ON BB1

ON BB2


CJX-21 is fixed at 9, A and B slots, equipped with a set of control circuit module with double

tripping coils and DC power supply switchover (card A, card B, card C), equipped with two voltage

switch modules in E and F slots.

Figure 4.1-6 shows the front view layout of the panel, definitions of indicators on the panel are as

follows:

ON BB1 and ON BB2 indicators are green, provided by voltage switchover modules, used to


52b indicator is red, 52a_1 and 52a_2 indicators are green, provided by control circuit module

with double tripping coil, used to indicate the current state of circuit breaker.

5 Installation and Commissioning


Date: 2012-03-29


5.1 Introduction

The chapter contains instructions on how to install and commission the protective device. It can

also be used as a reference if a periodic test is performed. The chapter covers procedures for

mechanical and electrical installation, energizing and checking of external circuitry, setting and

configuration as well as verifying settings and performing a directionality test.

The chapter contains the following information:

1. The Safety information presents warning and note signs, which the user should draw

attention to.

2. The Overview gives an overview over the major task when installing and commissioning the

protection equipment.

3. The Unpacking and checking the protective device contains instructions on how to receive

the protection equipment.

4. The Installing the protective device contains instructions on how to install the protection

equipment.

5. The Checking the external circuitry contains instructions on how to check that the protection

equipment is properly connected to the protection system.

The chapter is addressing the installation, commissioning and maintenance personnel responsible

for taking the protection into normal service and out of service. The installation personnel must

have a basic knowledge in handling electronic equipment. The commissioning and maintenance

personnel must be well experienced in using protection equipment, test equipment, protection

functions and the configured functional logics in the protection.

5.2 Safety Information

This section contains safety information. Warning signs are presented which attend the user to be

careful during certain operations in order to avoid human injuries or damage to equipment.

Warning signs

Warning!

Strictly follow the company and country safety regulations. Working in a high voltage

environment requires serious approach to avoid human injuries and damage to equipment.

Do not touch circuitry during operation. Potentially lethal voltages and currents are

present.

Always avoid touching the circuitry when the cover is removed. The product contains

electronic circuitries which can be damaged if exposed to static electricity (ESD). The



Date: 2012-03-29

electronic circuitries also contain high voltage which is lethal to humans.

Always use suitable isolated test pins when measuring signals in open circuitry. Potentially

lethal voltages and currents are present.

Never connect or disconnect a wire and/or a connector to or from a protective device

during normal operation. Hazardous voltages and currents are present that may be lethal.

Operation may be disrupted and protection equipment and measuring circuitry may be

damaged.

Always connect the protection equipment to protective ground, regardless of the operating

conditions. This also applies to special occasions such as bench testing, demonstrations

and off-site configuration. Operating the protection eq