Product Overview
The JN15-12/31.5 Series indoor earthing switch is a new design that is improved from the ES1 type. lt is suitable for electric power systems with a voltage of 3~12kV, three-phase, and AC 50(60)Hz. As an earthing protection device, it can be used in various kinds of HV switchgear. It meets the GB1985-2004 and lEC 129 standards.
Product Definition
Working Condition
Ambient temperature:-10°C-+40°C;
Altitude:≤1000m;
Relative humidity: Daily average≤95%,Monthly average≤90%
Earthquake intensity:≤8 degree;
Dirtiness degree: ll.
Technical Parameters
| No. | Item | Unit | Data | |
| 1 | Rated voltage | KV | 12 | |
| 2 | Rated short time withstand current | KA | 31.5 | |
| 3 | Rated short circuit withstand time | S | 4 | |
| 4 | Rated short circuit making current | KA | 80 | |
| 5 | Rated peak withstand current | KA | 80 | |
| 6 | Rated insulation level | 1min power frequency withstand voltage | KV | 42 |
| Lightning Impulse withstand voltage | 75 | |||
| 7 | Mechanical life | TIMES | 2000 | |
Installation drawing and hole location diagram