Description:
ZW20-12 outdoor high voltage vacuum circuit breaker for a period of 12KV, rated voltage of the three-phase AC 50HZ outdoor distribution equipment. It adopts vacuum arcing and SF6 gas as insulating medium is ZW20-12 column type vacuum circuit breaker on the modified products.
The product suitable for substation industrial and mining establishment's rural power network and occasions with frequent operation to protect and control. ZW20A outdoor AC high voltage vacuum circuit breaker is mainly used to break and close load current, over-load current and short-circuit current in outdoor 36kv three-phase alternating current 50Hz power system, also suitable for occasion with frequent operations.
Service environment:
1.Altitude: ≤3000 Meters
2.Enviroment temperature: outdoor -40ºC ~ +40ºC the daily temperature difference is 25ºC
3.Wind speed: ≤35m/s
4. Location is without inflammable substances, explosives, rusty chemicals and strenuous vibration
NO. |
Item |
Unit |
Value |
01 |
Rated voltage |
kV |
12 |
02 |
Rated frequency |
Hz |
50 |
03 |
Rated current |
A |
630 |
04 |
Rated short-circuit breaking current |
kA |
20 |
05 |
Withstand current of rated peak current |
kA |
50 |
06 |
Rated short time withstand current(4s) |
kA |
20 |
07 |
Rated short open/close current(peak) |
kA |
50 |
08 |
Mechanical life |
times |
10000 |
09 |
Open/close times of rated current |
times |
10000 |
10 |
Open/close times of rated short-circuit breaking current |
times |
30 |
11 |
Power frequency with stand voltage (1min):between phases, ground/fracture |
kV |
42/49 |
12 |
lightning impulse withstand voltage(peak)between phases, ground/fracture |
kV |
75/85 |
13 |
2nd circuit 1min power frequency withstand voltage |
kV |
2 |
14 |
Net weight |
kg |
140 |