JN15-24 Indoor grounding switch (earthing) 24KV
Suitable for indoor 24kV three-phase AC 50(60)Hz power system; It has the short-circuit closing ability to protect other electrical equipment in the switchgear from damage, and can be used with a variety of high-voltage switchgear as a grounding protection during the maintenance of high-voltage electrical equipment.
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 |
24 |
|
|
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 |
65/75
95/125 |
|
Lightning impulse withstand voltage |
|||
