Overview:
JN22B-40.5/31.5 grounding switch, an advanced level product , is suitable for 40.5KV indoor power system with three-phase AC 50Hz configuration.It meets GB1985-2004 and IEC129 standard.
Model: JN22B-40.5/31.5
Technical data:
| ITEM | UNIT | DATA |
| Rated voltage | KV | 35 |
| Maximum voltage | KV | 40.5 |
| Rated short time withstand current | KA | 31.5 |
| Rated short circuit withstand time | S | 4 |
| Rated short circuit making current | KA | 80 |
| Rated peak withstand current | KA | 80 |
| 1min power frequency withstand voltage | KV | 95 |
| Lightning impulse withstand voltage | KV | 185 |
| Central distance between poles | MM | 300;350;400 |
Dimension:
UNIT:mm
|
B |
H |
|
280 |
750 |
|
300 |
790 |
|
350 |
890 |
|
400 |
990 |
Environment condition:
① Altitude not more than 1000m above sea level.
② Ambient temperature not higher than +40°C and not lower than -10°C.
③ Relative humidity not greater than 95% on a daily average and not greater than 90% on a monthly average.
④ The seismic intensity does not exceed 8 degrees.
