GW8-72.5 Outdoor disconnector of neutral point 72.5kv
GW8-72.5 isolation switch is mainly composed of isolation switch, main connecting rod system and operating mechanism. The body consists of contact assembly, rod type pillar insulator, conductive rod assembly and bag mounting plate and other components.
The connecting rod system is composed of joints and connecting rods. The output shaft of the operating mechanism can be rotated 120 degrees horizontally. The connecting rod system and the arm rotate the moving contact and the static contact for closing or opening operation.
The features of GW8-72.5 isolation switch:
High voltage endurance: designed for 72.5kV voltage class, can withstand the electric field strength under high voltage.
Excellent mechanical properties: has excellent mechanical strength and stability, can withstand frequent operation and harsh environmental conditions.
Good electrical performance: can effectively isolate the circuit, prevent current overload and short circuit, protect the safety of the power system
Technical parameter
|
Rated voltage kV |
72.5 |
|
|
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 |
140 |
|
Between breaks |
160 |
|
|
Rated lightning impulse withstand voltage (peak) kV |
To earth |
325 |
|
Between breaks |
375 |
|
|
Mechanical life |
times |
2000 |
|
Rated mechanical load of the terminal |
mm |
675 |
|
Leakage distance |
fxQ |
<180 |
|
Mechanism |
Model No. |
Cs 17 OR CJ6,CK7 |
|
Weight |
KG |
160*3 |
