| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Electric Type |
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Indoor high voltage(HV)earthing switch absorbs advanced new technical from domestic and abroad. It confirms to GB1985-2004 standard. And applies to three-phase rated voltage 405kV. AC50/60Hzpower system. It can support the use of KYN61-405HV switch panel and other models, the foundation is protect the HV electric equipment when repair or maintenance.
Altitude:≤1000m;
Ambient temperature:-25ºC-+40ºC;
Earthquake does not exceed degree 8;
No fire, explosion, chemical erosion.
The grounding switch is composed of a support, a grounding knife assembly, a static contact, a sensor, a shaft, a crank arm, a compression spring, a conductive sleeve and a soft connection
Note: The bracket is welded into parts after bending thin steel plates, and the rest are assembled parts.
When the operating mechanism makes the grounding switch close, the main shaft overcome the resistance moment as a torque, drive the crank arm to rotate along the closing direction, and make the joystick on the grounding knife pass the dead point of the compression spring, the compression spring releases energy, so that the grounding switch quickly closes in the closing position. The grounding knife on the grounding knife assembly is firmly and reliably contacted by the dished spring and the flange (knife edge) of the static contact.
| Name | Units | Data | ||
| Rated voltage | kV | 40.5 | ||
| Rated short-time withstand current | kA | 31.5 | ||
| Rated circuit-time making current | kA | 80 | ||
| Rated peak withstand current | kA | 80 | ||
| Rated short-circuit duration | S | 300,350,400 | ||
| Rated insulting level | 1min.PF withstand voltage | kV | To earth, phase to phase | 95 |
| Lighting impulse withstand voltage | 185 | |||
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