HUAYI ELECTRIC

TECHNICAL DATA

CHZ7 series

Outdoor AC Automatic Recloser

ISO9001 International Quality System Certified Enterprise

China's Well-known Trademark

National Exemption from Inspection Products

2 FEA TURES

3 NORMAL SERVICE CONDITIONS

The delay time is continuously adjustable. The circuit breaker will not close

when the voltage increases at both sides, however it will automatically open when the voltage is loss.

Inverse time over current protection, and the over current value can be randomly set through

the keyboard.

Inverse time quick-breaking protection, and the quick-breaking value can be randomly

set through the keyboard.

Time-limited small current earthing protection, and the protective current value

can be randomly set through the keyboard.

Multiple-reclosing function, the reclosing time and the reclosing interval can be randomly set

through the keyboard.

20 fast & slow inverse time A-T curves will be provided, to realize the automatic cooperation

between the higher and the lower.

If the circuit breaker closes on the fault point, the controller will automatically open it and realize closing

lock.

If the fault occurs on its front line, the higher recloser will prevent the lower recloser from acting,

however, it will automatically isolate the fault zone without breaking if the fault occurs on the line of the lower recloser.

Standard RS-485 communication Interface, can work

The installation position of the meter is preserved in the box of the controller.

The remote control distance is 50m.

Unilateral voltage increase time delay.

Over current protection.

Quick-breaking protection.

Small current earthing protection.

Reclosing function.

Inverse time function.

Closing lock.

Sequenc cooperation.

Four remote function.

Memory.

Local remote control.

in conjunction with the relative equipments

to realize remote control through wireless, wire, optical fiber, microwave, carrier wave and so on.

The data will be automatically stored in the memory (Non volatile memory) for not less than 20 years.

Power on password protection, only the authorized person can change the settings.Three-step protection.

hereinafter referred to as Recloser

is applicable to the distribution system of substations and

industrial & mining enterprises for protection and control, and the sites with frequent operation. I

The product mainly accords with the following standards:

IEC 62271-111 & IEEE C 37.60:

<High voltage Switchgear and Controlgear> - Part 111: Overhead, pad-mounted, dry vault and submersible automatic

circuit reclosers and fault interrupters for alternating current systems;

IEC 62271-1-2007, idt GB/T11022

<High-voltage switchgear and controlgear - Part 1: Common specifications>.

CHZ7 model Outdoor AC Automatic Recloser ( ) is outdoor distribution equipment with

rated voltage 12/17.5/24kV, rated frequency 50Hz (or 60Hz),

t is composed of ZW20A

model Outdoor AC Vacuum Circuit Breaker and an automatic reclosing controller. The Recloser works in conjunction with

ACR, the sectionalizer or the fuse, to avoid the accidents of power outage due to the instantaneous faults, to remove the

permanent fault circuit (or fault point) in time, so as to reduce the events of power outage at maximum limit, narrow down

the range and time of power outage, and greatly improve the reliability of power supply in distribution system.

The circuit breaker adopts vacuum as the arcing medium, is of simple structure, high breaking ability and long life; mature

case type sealing structure and filled with SF6 gas as compound insulation inside, to keep it from the external environment,

is a maintenance free product. The controller adopts current & voltage sampling mode, and is designed through synthesizing

the features of the voltage type and current type controllers, integrates the functions of line protection, remote detect, remote

control and remote adjustment, is a new type comprehensive controller. Consequently, the product can satisfy the require

-ments of distribution automation and is an ideal equipments for distribution automation system.

GENERAL AND APPLICATION

PRODUCT FEATURES

1

1

2

3

4

5

6

7

8

9

10

11

12

13

12

42/48

34

75/85

630, 800, 1000

50/60

12.5,16,20,25

31.5,40,50,63

12.5,16,20,25

31.5,40,50,63

4

O-0.3s-CO-180s-CO

30

10000

220

KV

kV

kV

kV

A

Hz

kA

kA

kA

kA

s

time

time

V

CH Z 7 / -

Rate short-circuit breaking current (kA)

Rated current (A)

Rated voltage (kV)

Design sequence

Arcing medium (Z-vacuum)

Recloser

No. Items Unit Data

Rated voltage

Ratedinsulationlevel

Rated current

Rated frequency

Rated short-circuit breaking current

Rated peak withstand current (peak value)

Rated short-time withstand current

Rated short-circuit making current (peak value)

Rated short-time withstand time

Rated operating sequence

Breaking times of rated short-circuit breaking current

Mechanical life

Rated operating voltage(according to the requirements)

Altitude above sea level: not exceed 2000m;

Ambient temperature: -40 +40 , daily difference in temperature: 25 ;

Air polluted degree: ;

Earthquake intensity: not exceed 8 degree;

Wind speed: less than 35m/s;

Ice covering thickness: 10mm;

Sit without flammable, explosive and corrosive material, and frequent violent vibration.

Any special requirements, please consult the manufacturer.

NORMAL SERVICE CONDITIONS

MODEL AND MEANING

MAIN TECHNICAL PARAMETERS

1 min P.F.withstandvoltage

24

50/60

50

125/145

Dry test(interphases, to ground / between gaps)

Wet test(to ground, to insulation)

Lightning impulse withstand voltage (interphases, to ground / between gaps)

17.5

42/48

45

95/110

5.1 Rated technical parameters of circuit breaker table 1

2

5.2 Mechanical parameters of circuit breaker

5.3 Main technical parameters of the controller

5.4 Min. start current: 20% 1000% continuous adjustable

Min. start current is adjustable, the adjustment range can satisfy the technical requirement and the error is no more

than 10%.

5.5 Rated operating sequence of the controller: O-t1-CO-t2-CO-t3-CO-lock

thereinto, t1, t2, t3 are the reclosing intervals, will be not equal in one sequence. In rated operating sequence, t1, t2, t3

are min. values adjusted, and 2 times of quick-opening operation.

5.6 About the detail adjustment method, please refer to the Instruction of Recloser.

No.

1

2

3

4

5

6

7

8

9

10

11

Item Data

Transformation ratio of input CT

Rated voltage and frequency

Opening/closing operating power supply

Output capacity

Over-current settings

Quick-breaking settings

Reclosing time

Delay time

Zero phase sequence current

Local remote control distance

Remote control distance

/5A or 1A ( selected by the user)

AC 220V or AC100V, 50Hz(or 60Hz)

DC 24V or AC 220V

no less than 600W

20% 300% continuous adjustable

20% 100% continuous adjustable

0.1s 600s continuous adjustable

0.1s 600s continuous adjustable

10% 100% continuous adjustable

no less than 30m

no less than 1200m

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

No.

mm

m/s

ms

mm

mm

mm

N

Mpa

kg

UnitItems

Open distance of contact

Contacting travel of contact

Average opening speed

Average closing speed

Bounce time of contact closing

Three phase opening asynchronism

Closing time

Opening time

Circuit resistance of each phase

Centre distance between phases inside the enclosure

Centre distance between phases outside the enclosure

Allowable accumulated wear

Contact self-closing pressure

Rated pressure of SF6 gas (gauge pressure)

Net weight

1.2 0.2

0.6 0.2

2

2

40

45

200

135 2

280 2

3

2000 200

0

140

Data(12kV) Data(17.5/24kV)

1.4 0.2

0.6 0.2

2

2

45

45

120

135

340

3

2000 200

0

180

+19-0.5

+13-0.5

+112-0.5

+13-0.5

table 2

table 3

3

OUTLINE DIMENSIONS

Max. dim. of cross arm 85 85

Explosion-proof device

Manual energy storage handle

Energy storage indicator

Earth terminal

Aerial socket

energy non-stored energy stored

O/C indicator

Manual opening/closing handle

Hook

Cover of enclosure

Cover of mechanism

Gravity line

1160(1332)

2- 13

40

02

05

28

0(3

40

)

28

0(3

40

)

77

5(8

48

)6

35

18

5

350 0.5

Fig.1 Outline Dimensions of Circuit Breaker

(Figures in ( ) is the outline dimension for 17.5/24kV circuit breaker )

30

4

Fig.2 Outline Dimension of controller

580 500

840

520 440

7.1 The Recloser consists of the circuit breaker and the controller.

7.2 About the structure of the circuit breaker, please refer to Fig. 3.

The circuit breaker consists of main body box with the main circuit system and the operating parts inside, the operating

mechanism box and the lifting device for installation, fixation and lifting. The main circuit and the operating parts, and the

PRODUCT STRUCTURE

Incoming/outgoing bushing

Enclosure

Explosion-proof device

Insulation pulling rod

Cross arm

Lifting device

Up cover

Main shaft

Current transformer

Insulation box Vacuum interrupter

Fig.3 Internal Structure

5

operating mechanism are all sealed inside SF6 gas (zero gauge pressure) with excellent gas tightness. The opening/closing

operation can be manual or electrical operation, and be remotely contro lled. The operating mechanism is a complete set

with good interchangeability, it wil l not affect the original mechanical characteristic and gas tightness of main body, and each

part can go through the procedures such as assembly, test and inspect in advance. It is of simple structure, reliable action,

small volume and long life, and has a M12 earth bolt with obvious earth symbol. There is a mechanical indicator for observing

the opening/closing state of the circuit breaker on the box of operating mechanism.

Three sets of built-in CTs provide the controller with three phase output current for data analysis.

7.3

the Instruction of Recloser.

Operating mechanism

The operating mechanism has the functions of electrical energy storage, electrical opening/closing, and also manual

energy storage, manual opening/closing and over-current protection. The whole consists of the closing spring, the energy

storage system, the over-current trip, the opening/closing coils, the manual opening/closing system, the auxiliary switches,

the indicators and so on

7.4 Control box

The controller is installed inside the control box to control the circuit breaker, the parameters can be set according to the

requirements of the user. About the parameter setting, please refer to

(shown as Fig. 4).

Rocker Cam

Crutch arm

Holdwith rocker

Closing detent

Closing half shaft

Closing tripping shaft

Closing electromagnet

Cam Crutch arm

Opening detent

Opening half shaft

Opening tripping shaft

Opening electromagnet

Rocker

Fig.4-1 Closing operation Fig.4-2 Opening operation

Fig. 4 Operating Mechanism

WORKING PRINCIPLE

8.1 Energy storage

Electrical energy storage. The motor applies the output torque to the small gear, then the torque is transmitted to the

big gear on the main shaft through the chain, so as to drive the crutch arm to rotate, so as to realize energy storage. When

the push rod on the crutch arm presses the travel switch down, the power supply of motor will be cut off and spring energy

storage is completed.

Manual energy storage. Drive the output shaft by the manual energy storage handle to rotate the small gear, then

transmit the rotary torque to the big gear on the main shaft, so as to drive the crutch arm to rotate to make the closing spring

realize energy storage.

8.2 Closing operation(shown as Fig.4-1)

8.2.1 Electrical closing operation

After the mechanism receives the closing signal, the movable iron core of the closing electromagnet moves upwards to

6

drive the closing tripping rod also to move upwards, so as to make the closing half shaft rotate counterclockwise to release

the closing detent. Simultaneously, the closing detent will rotate counterclockwise under the pressure of roller to release

the energy storage state. The cam on the main shaft will produce the impulse force due to the retract of the closing spring,

and knock into the rocker on the manual energy storage shaft(output shaft), then the impulse force will be transmitted to the

micro switch through the link, thereby the electrical closing operation is completed.

8.2.2 Manual closing operation

Operate the manual closing device by an external force (about 80 120N), then the pin on the closing half shaft will

rotate counterclockwise, and drive the closing half shaft to rotate counterclockwise. Consequently, the effect will be as same

as operating the closing electromagnet.

8.2.3 Reclosing operation

The closing operation will be completed after the mechanism releases all the energy of the energy storage spring. The

mechanism proceeds with the energy storage operation again in the closing state, then it will be in the closing & energy

stored state. In this state, once receiving the reclosing signal after tripping, the mechanism will effect an automatic reclosing

operation.

8.4 Electric schematic diagram of control circuits

When the mechanism is in energy non-stored state, if NC

contact of travel switch(WD) is connected, the motor(M) will

drive the closing spring to start storing energy. Once energy

storage operation is completed, NC contact of travel switch will

open and cut off the power and the motor will stop rotating.

After the closing spring finishing the energy storage operation,

the mechanism is in opening state. Once receiving the closing

signal, the closing electromagnet(HQ) will be electrified and the

mechanism will start the electrical closing operation. When the

operation is over, NC contact of auxiliary switch(S) wi ll open

and cut off the power of the closing electromagnet. NC contact

(WD) is connected, as a result, the motor(M) will drive the closing

spring to start storing energy. NC contact(WD) will not open

until the energy storage operation is completed.

When the mechanism is in the closing state, once receiving

the opening signal, the opening electromagnet(TQ) will be

electrified and the mechanism will start the electrical opening

operation. When the operation is over, NO contact of auxiliary

switch(S) will open and cut off the power of the opening electro

-magnet.

8.3 Opening operation (shown as Fig.4-2)

8.3.1 Electrical opening operation

After the mechanism receives the opening signal, the movable iron core of the opening electromagnet moves upwards

to drive the opening tripping rod also to move upwards, so as to make the opening half shaft rotate counterclockwise to

release the opening detent. Simultaneously, the opening detent will rotate counterclockwise under the pressure of roller, the

rocker will rotate counterclockwise due to the pushing force of the opening spring, thereby the electrical opening operation

is completed.

8.3.2 Manual opening operation

Operate the manual opening device, then the pin on the opening half shaft will rota te counterclockwise, and drive the

opening half shaft to rotate counterclockwise. Consequently, the effect will be as same as operating the opening electromagnet.

input

S

S

1ZL

2ZL

3ZL

HQ

TQ

WHM

Fig.5 Control Circuit

O/C

circuit

7

TRANSPORTATION, ACCEPTANCE AND STORAGE

9.1 Transportation

The whole set of circuit breaker and the controller shall be respectively packed by the sealed wooden case and be fixed.

During transportation, overturn and leaning shall be prohibited, and the necessary shockproof measure shall be taken; During

carrying and lifting, prohibit from carrying the insulation bushing, to avoid regarding the force-free items as the forced items.

9.2 Acceptance

The user shall do as follows as receiving the goods:

9.2.1 Check if appearance is good, if the bushings are broken;

9.2.2 Check if the attached documents, the accessories and the spare parts completely accord with the packing list;

9.2.3 Check if the technical parameters on the nameplate and the qualification certificate accord with the ordering

requirements.

9.3 Storage

Packing, open-package and storage shall be done inside the dry room. The product shall be stored indoor, where is dry,

ventilated, moisture-proof and without the harmful gas. Termly check whether the environment accords with the requirement

If the product is stored for a long term.

10.1 Installation

10.1.1 Before install the circuit breaker, please try the opening/closing operation by the manual opening/closing device

on the mechanism, to check if all the operations are correct.

10.1.2 Carry out all the specified test;

10.1.3 The circuit breaker can be installed on the single pole or between the double poles, and seat installation or hoisting

INSTALLATION AND MAINTENANCE

Hook bolt

Loose-joint bolt

Nut M16

Steel wire ( 80mm,L)

Hanging plate

Fig.6 Lifting Schematic Diagram

ATTENTION

1. Please prohibit from opening the up cover and the cover of mechanism!

2. Please do not disassemble other fastening pieces except for the bolts

and screw caps for installation!

3. Forbid taking the bushings as the forced items during transportation & lifting.

Loose joint bolt

Hanging plate

Cross arm

Outline:75 75

Screw

8

12.1 Qualification certificate 1;

12.2 Instruction for installation and usage 1;

12.3 Packing list 1;

12.4 Secondary schematic diagram and secondary connection diagram 1.

ATTACHED DOCUMENTS

Installation is optional (shown as Fig.8, Fig.9, Fig.10);

10.1.4 For seat installation, the quantity of bolt M16 50 shall be 4, and the installation details shown as Fig. 7.

10.1.5 Installation dimension

350

4- 17 40

35

0

10.2 Maintenance

10.2.1 The circuit breaker is a maintenance-free product, the overall and periodic maintenance and inspection is not

needed. For the inspection, the

10.2.2 The periodic maintenance is needed for the controller during its operation. Carry out an annual inspection against

DC battery cell of the controller, and immediately replace the battery once the voltage per cell is lower than 12V. Replace

DC battery cell once every three year, and the charging time shall not be less than 24 hours before operation.

external inspection is enough, which includes the following items: whether the enclosure is

rusty or not, whether the bushings are broken or have some cracks; inspect the distance between the conductive wi res of

the main circuit and the earthing parts. For the maintenance, only the surface maintenance is recommended.

Fig.7 Installation Hole

ORDERING NOTE

The user shall indicate the following information when ordering:

11.1 Model, name and ratings;

11.2 Ratio, accuracy and quantity of CT;

11.3 The function of controller;

11.4 The length of the control cable;

11.5 Quantity and delivery time;

11.6 Installation mode and relevant fastening pieces;

11.7 Other special requirements and accessories.

9

Fig.8 Hoisting Installation on Single Pole

Fig.9 Seat Installation on Single Pole

Fig.10 Seat Installation between Double Poles

10

Office Add: No.138 Ningkang W. Road,Yueqing City,

Zhejiang, P.R. China P.C.:325600

Factory Add:

P.R.

Tel 0577-62558769 Fax 0577-27898866 / 62538979

Website: www.heag.cn, www.heag.ar E-mail: sales@heag.com

Weisi Road, Yueqing Economic Development zone

Yueqing, Zhejiang, China

<Printed in 2009>