Deskripsi
Earthing Switch
Model : JN15-12(7.2)/31.5
Brand : Shaanxi Electric International Co.,Ltd
1.The height above sea level shall be no more than 1000 meter;
2.Ambient air temperature: +40℃~ -25℃
3.Seismic intensity: no more than 8 magnitude
4.The average relative humidity of a day should be no more than 95%, that of a month should be no more than 90%
5. Fifth degree: II
Main technical parameter of earthing switch JN15-12/31.5
| Item | Unit | Data | ||
| Rated voltage | kV | 12 | ||
| Rated short time withstand current | kA | 31.5 | ||
| Rated duration of short circuit | S | 4 | ||
| Rated short circuit making current | kA | 80 | ||
| Rated peak withstand current | kA | 80 | ||
| Rated insulation level | Power frequency withstand voltage(1 min) | kV | Pole to ground | 42 |
| Lightning impulse withstand voltage | Between phases | 75 | ||
| Mechanical Life | times | 2000 | ||
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