Description
1.0 Instruction
The CHZ4(T)-12(15/27/38) KV/630A-1250A Providing the features of a traditional re-closer, plus the bene of up to date design optimized for automation, remote control and monitoring, now or in the future.by customer demand for improved return on capital investment in the distribution network to achieve optimum performance and reliability, making use of the latest available technology in insulation, vacuum interruption and microelectronics.
Three phase pole-top automatic circuit re-closer are designed and produced by the three kind of international advanced technology, as epoxy solid encapsulated technology, permanent magnetic actuating device, and intelligence control technology and so on.
The product is composite with solid dielectric insulted pole, permanent magnetic actuating device or motor actuating device, control unit, current transformer and vacuum interrupter and voltage sensor. Except the control unit is a single device, the others are combined together, compact frame, flexible design, easy to operate.
The CHZ4(T)-12(15/27/38) KV/630A-1250A three phase pole-top automatic circuit re-closer is for 12kV(15KV/27KV/38KV),50/60Hz distribution system, has not only circuit breaker control and protection features, but also can automatically detect the lines running statement.
Once the load side line or equipment occur a fault, meet or exceed current setting the minimum starting current, it will be good at a per-determined action sequence, to identify the fault is transient or permanent, and auto-complete one to three re-closing.
2.0 Designing Standard
2.0.1 ANSI-IEEE-Std-C37.60-2003,
2.0.2 BS EN 60529-1992+A2:2013
2.0.3 IEEE Std.C37.60-2013, IEEE Std C57.12.29-2014
2.0.4 JB7570-1994, and DL/T813-2002
2.0.5 IEC56, IEC694, IEC62271-111
3.Specification for Vacuum Circuit Breaker
3.1 Ratings for ZW32-12(15) KV Vacuum Circuit Breaker
No.
Item
Unit
Data for ZW32-12KV
Data for ZW32-15KV
1
Rated Voltage
KV
12
15
2
Rated insulation level
(phase to ground, phase to phase)
1 min Frequency withstand voltage
Dry
KV
42
50
Wet
34
45
Lighting Impulse Withstand Voltage(Peak)
KV
75
110
3
Medium Interruption:
Vacuum
4
Medium isolation:
Solid polymer
5
Mechanism of operation (closing and shot):
Magnetic
6
Assembly:
Suitable weather for substation
7
Environmental operating temperature:
FROM -40ºC-+50ºC
8
Position indicator: Green-closed; Open-red
9
Minimum distance of contouring of the insulation
MM
400
600
10
Rated Frequency
Hz
50/60
11
Rated Current
A
630/800/1250
12
Rated Min Start-up Current
Numerical
A
adjustable
Permissible deviation
%
±10
13
Rated Fault Interrupter Capacity
KA/3s
12.5/20
14
Rated Fault Symmetrical Making Current
KA
12.5/20
15
Rated Short-Time Withstand Current
KA
12.5/20
16
Rated Peak Withstand Current
KA
12.5/20
17
Interrupting Time(Max) (Cycle)
s
No more than 4
18
The conditions of different phase earthed fault short-circuit breaking current
KA
17.3
19
Rated Cable Charging Breaking current
A
25
20
Rated Operating Sequence
O-0.1s-CO-2s-CO-2s-CO-C
21
Rated Operation Voltage
V
AC/DC110/125/220/240
22
Rated Short-Circuit Current Breaking Times
Time
90%~100% Rated Short-Circuit Current volume
16
45%~55% Rated Short-Circuit Current volume
44
15%~20% Rated Short-Circuit Current volume
56
23
Mechanical Life (Mechanical stability)
Time/Unit Operation
15000
24
Current Transformer
Primary Rated Current
A
600/1000
Secondary Rated Current
1 or 5
Accuracy Grade
CL
0.2/5P20
Capability
VA
15
25
Special Manual Closing Mechanism
optional
26
Earthing
Solidly Earthed
3.2 Ratings for ZW32-27(38)
Complaint
