ZN12-40.5 indoor circuit breaker 40.5KV（drawout or fixed）
product detail
The overall structure of the circuit breaker is simple and reasonable, and the arc extinguishing chamber part, interlock part and operating part are arranged up and down. Special spring operating mechanism, no need to adjust, stable and reliable action.The installation form is free and flexible, including the drawout type of installation and fixed type of installation for switchgears.
Environmental conditions:
- Altitude: the altitude does not exceed 2000m;
- Ambient temperature: no higher than +40℃, not lower than -25℃;
- Relative humidity: the daily average does not exceed 95%, and the monthly average does not exceed 90%;
- Earthquake intensity: no more than 8 degrees;
- Locations without fire, explosion hazard, serious contamination, chemical corrosion and severe vibration.
Technical parameters
|
Name |
Unit |
Value |
|
Rated voltage |
KV |
40.5 |
|
1min power frequency withstand voltage |
KV |
95 |
|
Lightning impulse withstand voltage |
KV |
185 |
|
Rated frequency |
Hz |
50 |
|
Rated current |
A |
1250,1600,2000 |
|
Rated short-time withstand current |
KA |
25,31.5 |
|
Rated peak withstand current |
KA |
63,80 |
|
Rated short circuit duration |
S |
4 |
|
Rated short-circuit breaking current |
KA |
25,31.5 |
|
Rated short circuit closing current |
KA |
63,80 |
|
Rated operation sequence |
0-0.3s-Co-180s-Co |
|
|
Break time |
ms |
<80 |
|
Rated operating voltage |
V |
~110/-110,~220/-220 |
|
Mechanical life |
time |
10000 |
