GW8-40.5 Outdoor disconnector of neutral point 40.5kv
GW8 isolation switch is an outdoor high-voltage electrical equipment used for three-phase AC 50Hz, mainly in the case of no load transformer neutral point to ground connection. The equipment is suitable for the rated working voltage from 35kV to 126kV power system, has high mechanical strength and voltage resistance performance, to ensure stable operation in various environmental conditions .
GW13 and GW8 are unipolar AC 50Hz outdoor high voltage appliances. They are mainly used for separating and connecting the transformer neutral and the grounded connection when there is voltage and no load, so that the transformer neutral can be freely switched between grounded and ungrounded operation modes.
Service Conditions:
- Altitude:1500m
- Ambient temperature:-45°C ~45°C
- Wind pressure:≤700pa(wind speed 34m/s)
- Earthquake intensity:≤8 degree
- Humidity of air:monthly≤90°C,daily≤95°C
- Environment degree: degree III
- Cannot be use on the condition of the danger of fire and blast,heavy pollution,chemical etching,strong shake ect.
Technical parameter
|
Rated voltage kV |
40.5 |
|
|
Rated current A |
400, 630, |
|
|
Rated peak withstand current kA |
Disconnector |
80, |
|
Earthing switch |
80 |
|
|
Rated short-time withstand current and duration kA/s |
Disconnector |
31.5 |
|
Earthing switch |
31.5 |
|
|
Rated short-time power frequency withstand voltage (rms.) kV |
To earth |
95 |
|
Between breaks |
118 |
|
|
Rated lightning impulse withstand voltage (peak) kV |
To earth |
185 |
|
Between breaks |
215 |
|
|
Mechanical life |
times |
2000 |
|
Rated mechanical load of the terminal |
mm |
400 |
|
Leakage distance |
fxQ |
<160 |
|
Mechanism |
Model No. |
Cs 17 OR CJ6,CK7 |
|
Weight |
KG |
140*3 |
