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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: [email protected]
Weisi Road, Yueqing Economic Development zone
Yueqing, Zhejiang, China
<Printed in 2009>