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Product Description
The GSC-12 indoor AC high-voltage SF6 load circuit breaker is a type of indoor switchgear with a rated voltage of 12kV. This device uses SF6 as the gas arc and insulation medium, including the three-phase opening, closing, and grounding, and has the advantages of small volume, easy installation, and strong adaptability to the environment.
GSC-12 of an indoor high-voltage SF6 load switch and GSC-12D of SF6 load switch plus fuse combination canfunctionto protect and control the electric equipments for power supply and transformer substations especially being suitable for ring net cabinet, cable branch cabinet and distribution switching substation.
GSC-12 of an indoor high-voltage SF6 load switch and GSC-12D load switch plus fuse combination are complied with the standards of GB3804-1990, IEC60256-1,1997, GB16926, IEC60420 etc..
Service environment:
a) Airtemperature
Maximumtemperature: +40ºC; Minimumtemperature:-5ºC
b) Humidity
Monthly average humidity 95%; Daily average humidity 90%.
c) Altitude above sea level
Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) Nofrequent violent shake
Main technical specifications:
|
No |
Item |
Unit |
Parameter |
||
|
1 |
Rated voltage |
kV |
12 |
||
|
2 |
Rated frequency |
Hz |
50/60 |
||
|
3 |
Rated current |
A |
630/800 |
||
|
4 |
wet 1min Power frequency withstand voltage |
kV |
38
48 |
||
|
5 |
Lightning impulse withstand voltage |
kV |
75 |
||
|
6 |
Rated short circuit breaking current (peak) |
kA |
80 |
||
|
7 |
Rated activeload and close circuit breaking current |
A |
63 |
||
|
8 |
Rated transferring current |
A |
1700 |
||
|
9 |
Rated short circuit making current (peak) |
kA |
80 |
||
|
10 |
Rated cable(line) charging breaking current |
A |
50 and 10 |
||
|
1 1 |
Cable charge breaking current in earthing fault |
A |
20 |
||
|
12 |
Rated withstand current (peak) |
kA |
80 |
||
|
13 |
Short time withstand current (2s) |
kA |
31.5 |
||
|
14 |
Mechanism life |
times |
5000 |
||
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