SC6-24 SF6 Load Break Switch
Standard Specification++++General:
SC6-24 SF6 load break switch, an switchgear with the rated voltage of 12KV/24/KV/36/KV, adopted with SF6 gas as an arc-extinguishing ad insulation medium, including the three contactors for switching-on and switching-off and to ground, and is characteistic in its small volume, its convenient installation and operation and its the great adaptability with surroundings.
SC6-24 SF6 load break switch and RLS-24D of SF6 load switch plus fuse combination canfunctionto protect and controlthe electric equipmentsfor power supply and transformer substations especially being suitable for ring net cabinet, cable branch cabinet and distribution switching substation.
SC6-24 SF6 load break switch and RLS-24D load switch plus fuse combination are complied withthe standards of GB3804-1990, IEC60256-1,1997, GB16926, IEC60420 etc..
++++Service environment:
a) Airtemperature
Maximumtemperature: +40℃; Minimumtemperature:-5℃
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 |
|
Unit |
Parameter |
|
|
1 |
Rated voltage |
kV |
24 |
|
|
2 |
Rated frequency |
Hz |
50/60 |
|
|
3 |
Rated current |
A |
630/800 |
|
|
4 |
wet
1min Power frequency withstand voltage |
kV |
50
60 |
|
|
5 |
Lightning impulse withstand voltage |
kV |
125/150 |
|
|
6 |
Rated short circuit breaking current (peak) |
kA |
63 |
|
|
7 |
Rated activeload and close circuit breaking current |
A |
50 |
|
|
8 |
Rated transferring current |
A |
1200 |
|
|
9 |
Rated short circuit making current (peak) |
kA |
63 |
|
|
10 |
Rated cable(line) charging breaking current |
A |
50 and 10 |
|
|
11 |
Cable charge breaking current in earthing fault |
A |
20 |
|
|
12 |
Rated withstand current (peak) |
kA |
63 |
|
|
13 |
Short time withstand current (2s) |
kA |
25 |
|
|
14 |
Mechanism life |
times |
2000 |
|