JN15-12 series indoor high voltage earthing switch is a compositional type, and the technical parameters is corresponding to the requirements of IEC62271-102:2002. It is applicable for three-phase power system of 3-12kv, AC 50HZ. It can be used together with many types high voltage switchgear as a earthing protection unit.
|Rated short-time withstand current||KA||31.5|
|Rated short-circuit duration time||S||4|
|Rated making current||KA||80|
|Rated withstand current(peak value)||KA||80|
|Pole to pole distance||mm||150,210,230,250,275|
|Rated insulation level||Power frequency|
withstand voltage(1 min)
|KV||To earth, phase to phase||42,48|
- Altitude should not exceed 1000 m
- The ambient temperature: -25℃~ +40℃
- The seismic intensity should not exceed 8 degree.
- Relative humidity should not exceed 95%, monthly average value should not exceed 90%.
- Pollution degree: Ⅱ