JN22-40.5 Indoor grounding switch (earthing) 35KV
JN22-40.5/31.5 series indoor high voltage grounding switch (hereinafter referred to as grounding switch) is a new product developed by the company. Its performance meets the requirements of the national standard GB1985-2004 and IEC62271-102:2002.
Suitable for three-phase rated voltage 40.5kV, AC 50Hz power system, can be used with KYN61-40.5 high voltage switchgear and other types of high voltage switchgear, as high voltage electrical equipment maintenance ground protection.
Environmental conditions
- The altitude does not exceed 1000m;
- Ambient air temperature: upper limit +40℃, lower limit -10℃;
- Allow storage and transportation at 30℃;
- The seismic intensity does not exceed 8 degrees;
- No flammable, explosive, severe dust, chemical corrosion and severe vibration.
The main technical parameters
|
Item |
Unit |
Value |
|
|
Rated voltage |
KV |
40.5 |
|
|
Rated short-time withstand current |
KV |
31.5 |
|
|
Rated short circuit duration |
S |
4 |
|
|
Rated short circuit closing current |
KA |
80 |
|
|
Rated peak withstand current |
KA |
80 |
|
|
Center distance between poles |
mm |
150,210,275 |
|
|
Rated insulation level |
1min power frequency withstand voltage |
KV |
95/118
185/215 |
|
Lightning impulse withstand voltage |
|||
