Description:
The Earthing switch is a type of electrical switch that is used to connect or disconnect an electrical circuit from the ground. It is typically used to provide a safe path for electrical current to flow to the ground in the event of a fault or short circuit.
Introduction
JN15 -24/31.5 Series indoor Earthing Switch is a new design and improved on the JN15 type (the installation size does not change). It is suitable for electric power system with 20~24KV, three- -phase and AC 50(60)Hz. As an earthing protection, it can be used in various kinds of HV Switchgears. It meets GB1985 -2004 and IEC129 standard.
Working condition
O Ambient temperature: -10C ~ +40°C ; O Altitude: ≤1000m; O Relative humidity: Daily average≤95%，Monthly average≤90% O Earthquake intensity:≤8 degree; O Class of pollution: II .
Drawing
Hole location diagram
Environmental
No. | ltem | Unit | Data |
1 | Rated voltage | KV | 24 |
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 |
No. | ltem | Unit | Data | |
6 | Rated insulation level | 1 min power frequency withstand voltage | KV | 65 |
7 | Lightning Impulse withstand voltage | 95 | ||
8 | Mechanical life | TIMES | 2000 | |
Specification | E | F | G | H | [) | C |
JN15-24/31.5-210 | 210 | 75 | 160 | 655 | 516 | |
JN15-24/31.5-220 | 220 | 75 | 160 | 735 | 536 | |
JN15-24/31.5-230 | 230 | 75 | 160 | 810 | 556 | 96 |
JN15-24/31.5-250 | 250 | 75 | 160 | 810 | 596 | 96 |
JN15-24/31.5-275 | 275 | 75 | 185 | 810 | 646 | 96 |
No. | ltem | Unit | Data |
1 | Rated voltage | KV | 24 |
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 |
No. | ltem | Unit | Data | |
6 | Rated insulation level | 1 min power frequency withstand voltage | KV | 65 |
7 | Lightning Impulse withstand voltage | 95 | ||
8 | Mechanical life | TIMES | 2000 | |
Specification | E | F | G | H | [) | C |
JN15-24/31.5-210 | 210 | 75 | 160 | 655 | 516 | |
JN15-24/31.5-220 | 220 | 75 | 160 | 735 | 536 | |
JN15-24/31.5-230 | 230 | 75 | 160 | 810 | 556 | 96 |
JN15-24/31.5-250 | 250 | 75 | 160 | 810 | 596 | 96 |
JN15-24/31.5-275 | 275 | 75 | 185 | 810 | 646 | 96 |
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