JN15-12/31.5 High Voltage Earthing Switch (ES1-10/31.5)
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Introduction
JN15-12/31.5 series indoor earthing switch is a new design and improved product of our company according to the ES1 type, suitable with electric power system with 3- 12KV, Three-phase, AC 50(60)Hz, support with various kinds of HV switchgear and as earthing protection. It is manufactured comply with GB1985-2004 and IEC129 standard.
Working Condition
1. Ambient temperature:-10~+40℃
2. Altitude: ≤1000m (sensor height:140mm)
3. Relative humidity: Day average relative humidity ≤95%
Month average relative humidity ≤90%
4. Earthquake intensity: ≤8degree
5. Dirtiness degree: II
|
No. |
Item |
Units |
Parameters |
||
|
1 |
Rated current |
kA |
|
||
|
2 |
Rated short-time withstand current |
kA |
31.5 |
||
|
3 |
Rated circuit-time making current |
kA |
80 |
||
|
4 |
Rated peak withstand current |
kA |
80 |
||
|
5 |
Rated short-circuit duration |
S |
4 |
||
|
6 |
Rated insulation level | 1 min. PF withstand voltage |
kV |
To earth phase to phase |
65 |
|
|
Lighting impulse withstand voltage |
|
|
125 |
|
|
7 |
Mechanical life |
time |
2000 |
||
