ZW32-12 Type Outdoor H.V.Vacuum Circuit Breaker
Contact:
Main application
ZW32Y-12/630-20/25 type outdoor permanent magnetic H.V. vacuum on pillar dry circuit breaker (hereinafter referred to as circuit breaker), is the control and protection equipment used in rated voltage 12KV, 50HZ AC three phase high voltage distribution grid. Mainly used for load current, overload current and short-circuit current breaking, closing in the power lines. Applied to substation and industrial and mining enterprises in power system used for protection and control purposes. In accordance with “GB1984 AC high voltage circuit breaker”, “GB1985 high voltage AC disconnectors and earthing switches”, DL/T402, DL/T403 requirements.
The use of environmental conditions
1. Ambient temperature: upper limit +40℃, lower limit -30℃;
2. Altitude: ≤2000m;
3. Wind pressure: not more than 700Pa (corresponding to the wind speed 34m/s);
|
No. |
Name |
Unit |
Data |
||
|
|
|
|
12kV |
||
|
1 |
Rated voltage |
kV |
12 |
||
|
2 |
Rated current |
A |
630, 1250 |
||
|
3 |
Rated
Insulation level |
1min. PF withstand voltage | dry |
kV |
42(across open contacts:48) |
|
|
wet |
|
34 |
||
|
4 |
Lightning impulse withstand voltage(peak) |
kV |
75(across open contacts:85) |
||
|
5 |
Rated short-circuit breaking current |
kA |
20, 25 |
||
|
6 |
Rated short-circuit making current(peak) |
kA |
50, 63 |
||
|
7 |
Rated peak withstand current |
kA |
50, 63 |
||
|
8 |
4s rated short-time withstand current |
kA |
20, 25 |
||
|
9 |
Rated operating sequence |
|
O-0.3s-CO-180s-CO |
||
|
10 |
Breaking times of rated short-circuit breaking current |
times |
30 |
||
|
11 |
Mechanical duration |
times |
10000 |
||
|
12 |
Rated voltage of energy storage motor |
V |
DC or AC220 DC110 48 24 |
||
|
13 |
Rated operation voltage |
V |
DC or AC220 DC110 48 24 |
||
|
14 |
Abrasions thickNess of contacts |
mm |
3 |
||
|
15 |
Rated current of over-current release |
A |
5 |
||
|
16 |
Current Transformer ratio |
|
200/5, 400/5 600/5 |
||
4. Earthquake intensity: do not exceed 8 degree;
5. Pollution grade: III class;
6. Maximum daily temperature variety less than 25℃.
