The ZW20-12 primary-secondary integrated pole-mounted switch is widely used in the market. It adopts a shared-box structure with high sealing and protection capabilities, featuring vacuum arc extinction and SF6 insulation for excellent breaking performance. It withstands harsh outdoor operating environments and is a maintenance-free vacuum circuit breaker. When paired with a controller, it can achieve protection against overcurrent, short-circuit, and single-phase grounding faults, as well as isolation of faulty areas. It has earned widespread recognition from grid users.
1/1
ZW20-12 Shared-box Type
Negotiable
China
No.12 Hongtai Road, Huaming Street, Dongli District, Tianjin City
15822469629
xinglwpg@126.com
Product Introduction
Product Parameters
|
No. |
Project Name |
Unit |
Parameters |
|
|
1 |
Rated voltage |
kV |
12 |
|
|
2 |
Rated frequency |
Hz |
50 |
|
|
3 |
Rated current |
A |
630 |
|
|
4 |
Rated short-time power frequency withstand voltage (1min, effective value) |
Interphase, to the ground |
kV |
42 |
|
Fracture |
48 |
|||
|
5 |
Rated lightning impulse withstand voltage (peak) |
Interphase, to the ground |
kV |
75 |
|
Fracture |
85 |
|||
|
6 |
Rated short-circuit breaking current (effective value) |
kA |
20/25 |
|
|
7 |
Rated short-circuit closing current (peak) |
kA |
50/63 |
|
|
8 |
Rated short-time withstand current |
kA |
20/25 |
|
|
9 |
Rated peak withstand current |
kA |
50/63 |
|
|
10 |
Rated short circuit duration |
S |
4 |
|
|
11 |
Rated short-circuit current breaking times |
Times |
30 |
|
|
12 |
Rated cable charging breaking current |
A |
25(C2) |
|
|
13 |
Rated operating sequence |
O-0.3s-CO-180s-CO |
||
|
14 |
Mechanical life |
Times |
10000 |
|
|
15 |
Protection grade of mechanism box |
IP67 |
||
|
16 |
Interphase center distance |
mm |
135±2 |
|
|
17 |
Main circuit resistance |
μΩ |
≤ 120 |
|
|
18 |
Weight |
kg |
180 |
|
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