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A mechanical switch used in the grounding portion of a circuit that can carry current under abnormal conditions (such as short-circuit current) for a certain period of time, but it is not required to carry current under normal circuit conditions. Applicable to 12KV- 40.5KV and below, AC 50Hz power system, can be used with various types of high voltage switchgear for grounding protection.
Main structure of grounding switch:
bracket, grounding knife assembly, static contact, sensor, shaft, arm,compression spring, conductive sleeve, soft connection. The bracket is bent by a thin steel plate and welded into parts, and the rest are assembled parts.
Normal Working Environment:
1.Altitude: ≤1000m
2. Ambient temperature at -10ºC to +40ºC
3.Earthquake intensity: ≤8 degree
4.Pollution level: II
5. Relative humidity: Daily average≤95%, monthly average≤90%
Order Note:
1. Model (rated voltage, short-time withstand current)
2. Phase distance
3. Auxiliary switch opening and closing number
4. Manual or motor (if motor type, you need to confirm the motor voltage, control module model)
5. Left or right operation
Note: JN15-12/31.5-150 requires an insulating cover to increase the insulation level due to the distance between the phases. JN15-24/31.5-210 also has an insulating cover.
Our company has applied for a patent for the earthing switch with insulation cover.
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