Overview:
JN 17-12/40 grounding switch(develop from JN15-12/40), an advanced level product , is designed for 3-12KV indoor power system with three-phase AC 50Hz configuration.It meets GB1985-2004 and IEC129 standard.
Model: JN 17-12/40
Technical data:
| ITEM | UNIT | DATA |
| Rated voltage | KV | 12 |
| Rated short time withstand current | KA | 40 |
| 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 | 42 |
| Lightning impulse withstand voltage | KV | 75 |
| Mechanical life | TIMES | 2000 |
Dimension:
UNIT:mm
| Dimension |
E |
F |
G |
H |
D |
| JN17-12/40-210 |
210 |
50 |
185 |
655 |
516 |
| JN17-12/40-220 |
220 |
50 |
185 |
675 |
536 |
| JN17-12/40-230 |
230 |
50 |
185 |
695 |
556 |
| JN17-12/40-250 |
250 |
50 |
185 |
735 |
596 |
| JN17-12/40-275 |
275 |
50 |
210 |
810 |
646 |
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.
