35kV grounding switch
Product Overview
The JN22-40.5/31.5 kV series indoor high-voltage earthing switch (hereinafter referred to as the “earthing switch”) is a new type of earthing switch developed by our company through the introduction of advanced foreign technologies and in response to market needs. It is suitable for use in indoor 3–40.5 kV three-phase AC power systems operating at 50 (60) Hz, and can be paired with various models of high-voltage switchgear. It may also be used for earthing purposes during maintenance and inspection of high-voltage electrical equipment. Comprehensive testing has demonstrated that its performance complies with the requirements of GB 1985 “AC High-Voltage Isolating Switches and Earthing Switches” and IEC 129.
Working conditions
● Applicable to the following environments
The elevation shall not exceed 1,000 meters;
Ambient temperature shall not exceed +40°C or fall below -10°C;
The daily average relative humidity shall not exceed 95%, and the monthly average shall not exceed 90%.
Seismic intensity does not exceed 8 degrees;
● Not applicable to the following venues
The installation location is subject to gases, vapors, chemical precipitates, dust and dirt, as well as explosive and corrosive substances that can severely impair the insulation and conductivity of the earthing switch; furthermore, the installation location experiences frequent and severe vibrations.
Implementation Standard
GB1985
Technical Specifications
Project |
Unit |
Data |
||
Rated voltage |
Kv |
35 |
||
Maximum voltage |
Kv |
40.5 |
||
Thermal stability current |
KA |
31.5 |
||
Thermal stability current duration |
S |
4 |
||
Short-circuit making current |
KA |
80 |
||
Dynamic stability current |
KA |
80 |
||
Rated |
Rated short-time power-frequency withstand voltage |
Kv |
Relatively and |
95 |
Rated lightning impulse withstand voltage |
185 |
|||
Outline Dimension Drawing (mm)
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Contact Us
0411-83167110
No. 95, West Section of Shiji Road, Pulandian District, Dalian City, Liaoning Province
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