Complaint
General:
GSC-12 an indoor high-voltage SF6 load switch, an switchgear wi ththe rated voltage of 12kV/24kV, adopted with SF6 gas as an arc-extinguishing and insulation medium, including the three contactors for switching-on and switching-off andto-ground, and is characteristic in its small volume, its convenient installation and operation and itsthe great adaptability with surroundings.
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 withthe 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 | ||
