TECHNICAL DATA
CHZ7 series
Outdoor AC Automatic Recloser
ISO9001 International Quality System Certified Enterprise
China's Well-known Trademark
National Exemption from Inspection Products
HUAYI ELECTRIC
GENERAL AND APPLICATION
CHZ7 model Outdoor AC Automatic Recloser (hereinafter referred to as Recloser) is outdoor distribution equipment with
rated voltage 12/17.5/24kV, rated frequency 50Hz (or 60Hz), is applicable to the distribution system of substations and
industrial & mining enterprises for protection and control, and the sites with frequent operation. It 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
structure and filled with SF6 gas as compound insulation inside, to keep it from the external environment,
2 type
FEAsealing
TURES
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.
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>.
PRODUCT FEATURES
Unilateral voltage increase time delay. 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.
Over current protection. Inverse time over current protection, and the over current value can be randomly set through
the keyboard.
Quick-breaking protection. Inverse time quick-breaking protection, and the quick-breaking value can be randomly
set through the keyboard.
3 NORMAL
CONDITIONS
Small currentSERVICE
earthing protection.
Time-limited small current earthing protection, and the protective current value
can be randomly set through the keyboard.
Reclosing function. Multiple-reclosing function, the reclosing time and the reclosing interval can be randomly set
through the keyboard.
Inverse time function. 20 fast & slow inverse time A-T curves will be provided, to realize the automatic cooperation
between the higher and the lower.
Closing lock. If the circuit breaker closes on the fault point, the controller will automatically open it and realize closing
lock.
Sequenc cooperation. 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.
Four remote function. Standard RS-485 communication Interface, can work in conjunction with the relative equipments
to realize remote control through wireless, wire, optical fiber, microwave, carrier wave and so on.
Memory. The data will be automatically stored in the memory (Non volatile memory) for not less than 20 years.
Three-step protection. Power on password protection, only the authorized person can change the settings.
The installation position of the meter is preserved in the box of the controller.
Local remote control. The remote control distance is 50m.
1
NORMAL SERVICE CONDITIONS
Altitude above sea level: not exceed 2000m;
Ambient temperature: -40
Air polluted degree:
+40 , daily difference in temperature: 25 ;
;
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.
MODEL AND MEANING
CH
Z
7
/
Rate short-circuit breaking current (kA)
Rated current (A)
Rated voltage (kV)
Design sequence
Arcing medium (Z-vacuum)
Recloser
MAIN TECHNICAL PARAMETERS
5.1 Rated technical parameters of circuit breaker
No.
table 1
Unit
Items
1
Rated voltage
2
Rated
insulation
level
1 min P.F.
withstand
voltage
Data
KV
12
17.5
24
Dry test(interphases, to ground / between gaps)
kV
42/48
42/48
50/60
Wet test(to ground, to insulation)
kV
34
45
50
kV
75/85
95/110
125/145
Lightning impulse withstand voltage (interphases, to ground / between gaps)
3
Rated current
A
630, 800, 1000
4
Rated frequency
Hz
50/60
5
Rated short-circuit breaking current
kA
12.5,16,20,25
6
Rated peak withstand current (peak value)
kA
31.5,40,50,63
7
Rated short-time withstand current
kA
12.5,16,20,25
8
Rated short-circuit making current (peak value)
kA
31.5,40,50,63
9
Rated short-time withstand time
s
4
10
Rated operating sequence
11
Breaking times of rated short-circuit breaking current
time
30
12
Mechanical life
time
10000
13
Rated operating voltage(according to the requirements)
V
220
O-0.3s-CO-180s-CO
2
5.2 Mechanical parameters of circuit breaker
table 2
Data(12kV)
Unit
Items
No.
1
Open distance of contact
2
Contacting travel of contact
3
Average opening speed
4
Average closing speed
5
Bounce time of contact closing
6
Three phase opening asynchronism
7
9-0.5
mm
m/s
Data(17.5/24kV)
+1
12-0.5
+1
+1
3-0.5+1
3-0.5
1.2 0.2
1.4 0.2
0.6 0.2
0.6 0.2
2
2
2
2
Closing time
40
45
8
Opening time
45
45
9
Circuit resistance of each phase
200
120
10
Centre distance between phases inside the enclosure
mm
135
2
135
11
Centre distance between phases outside the enclosure
mm
280
2
340
12
Allowable accumulated wear
mm
3
13
Contact self-closing pressure
N
14
Rated pressure of SF6 gas (gauge pressure)
15
Net weight
ms
2000
3
200
2000
200
Mpa
0
0
kg
140
180
5.3 Main technical parameters of the controller
table 3
Item
No.
Data
1
Transformation ratio of input CT
2
Rated voltage and frequency
3
Opening/closing operating power supply
4
Output capacity
5
Over-current settings
20%
300% continuous adjustable
6
Quick-breaking settings
20%
100% continuous adjustable
7
Reclosing time
0.1s
600s continuous adjustable
8
Delay time
0.1s
600s continuous adjustable
9
Zero phase sequence current
10%
100% continuous adjustable
10
Local remote control distance
11
Remote control distance
5.4 Min. start current: 20%
/5A or 1A (
selected by the user)
AC 220V or AC100V, 50Hz(or 60Hz)
DC 24V or AC 220V
no less than 600W
no less than 30m
no less than 1200m
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.
3
OUTLINE DIMENSIONS
Max. dim. of cross arm
85 85
Explosion-proof device
Manual energy storage handle
O/C indicator
635
Energy storage indicator
energy non-stored
energy stored
185
Earth terminal
350
Aerial socket
Manual opening/closing handle
0.5
1160(1332)
2-
Hook
13
30
280
(340)
775
(848)
280
(340)
400
205
Gravity line
Cover of enclosure
Cover of mechanism
Fig.1 Outline Dimensions of Circuit Breaker
(Figures in ( ) is the outline dimension for 17.5/24kV circuit breaker )
4
580
500
520
440
840
Fig.2 Outline Dimension of controller
PRODUCT STRUCTURE
Cross arm
Insulation pulling rod
Lifting device
Up cover
Explosion-proof device
Main shaft
Enclosure
Current transformer
Incoming/outgoing bushing
Insulation box
Vacuum interrupter
Fig.3 Internal Structure
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
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 operati ng mecha nism is a comple te set
with good interchangeability, it will 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 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 cl osing sp ring, th e energy
storage system, the over-current trip, the opening/closing coils, the manual opening/closing system, the auxiliary switches,
the indicators and so on (shown as Fig. 4).
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 the Instruction of Recloser.
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.
Crutch arm Closing detent Closing tripping shaft
Rocker
Cam Holdwith rocker Closing half shaft
Cam
Rocker Opening detent Opening tripping shaft
Crutch arm
Closing electromagnet
Opening half shaft
Opening electromagnet
Fig.4-1 Closing operation
Fig.4-2 Opening operation
Fig. 4 Operating Mechanism
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.
8.3 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 operati on
is completed.
8.3.2 Manual opening operation
Operate the manual opening device, then the pin on the opening half shaft will rota te co unterclo ckwise, and driv e the
opening half shaft to rotate counterclockwise. Consequently, the effect will be as same as operating the opening electromagnet.
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
input
drive the closing spring to start storing energy. Once energy
storage operation is completed, NC contact of travel switch will
1ZL
open and cut off the power and the motor will stop rotating.
S
After the closing spring finishing the energy storage operation,
the mechanism is in opening state. Once recei ving the closing
O/C
signal, the closing electromagnet(HQ) will be electrified and the
circuit
HQ
mechanism will start the electrical closing operation. When the
S
operation is over, NC contact of auxiliary switch(S) wi ll open
2ZL
and cut off the power of the closing electromagnet. NC contact
TQ
(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
3ZL
WH
M
electrified and the mechanism will start the electrical opening
operation. When the operation is over, NO conta ct of auxiliary
switch(S) will open and cut off the power of the opening electro
-magnet.
7
Fig.5 Control Circuit
TRANSPORTATION, ACCEPTANCE AND STORAGE
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.
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.
INSTALLATION AND MAINTENANCE
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
Hook bolt
Loose-joint bolt
Nut M16
Steel wire (
80mm,L)
Loose joint bolt
Screw
Hanging plate
Hanging plate
Cross arm
Outline:75
Fig.6 Lifting Schematic Diagram
8
75
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.
350
10.1.5 Installation dimension
4-
17
40
350
Fig.7 Installation Hole
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 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 t he condu ctive wi res of
the main circuit and the earthing parts. For the maintenance, only the surface maintenance is recommended.
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 volt age per cell is lower th an 12V. Replace
DC battery cell once every three year, and the charging time shall not be less than 24 hours before operation.
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.
ATTACHED DOCUMENTS
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.
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: Weisi Road, Yueqing Economic Development zone
Yueqing, Zhejiang, P.R. China
Tel 0577-62558769 Fax 0577-27898866 / 62538979
Website: www.heag.cn, www.heag.ar
E-mail: sales@heag.com
<Printed in 2009>