JN17-12/40 High voltage Eaething Switch
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Product Definition
Introduction
JN17-12/40 (old type is JN15-12/40) series indoor high voltage earthing switch is a new design and improved product of our company according to the ES1 type, the structure is assembled, suitable with electric power system with 3-10KV,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
Mainly technical parameters
| Item |
Units |
Data |
|
| Rated voltage |
kV |
12 |
|
| Rated short time withstand current |
kA |
40 |
|
| Rated short circuit withstand time |
s |
4 |
|
| Rated short circuit ,aking current |
kA |
100 |
|
| Rated peak withstand current |
kA |
100 |
|
| RatedInsulationlevel | 1min power frequencyWithstand voltage |
kV |
42 |
| Lighting Impulsewithstand voltage |
kV |
75 |
|
| Mechanism life |
time |
2000 |
|
