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● JN17-12/40 (old type is JN15-12/40) series indoor MV earthing switch is a new design and improved product of our company according to the ES1 type, the structure is assembled, suitable for electric power system with 3-10KV, Three-phase,AC 50(60)Hz,supported with various kinds of HV switchgear and as earthing protection.
● Standard: IEC 129,IEC 62271-102.
Selection
Operating conditions
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
Technical data
| Item | Units | 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 | 100 | |
| Rated peak withstand current | kA | 100 | |
| Rated | 1min power frequency withstand voltage | kV | 42 |
| insulation level | Lightning Impulse withstand voltage | kV | 75 |
| Mechanism life | time | 2000 | |
Overall and mounting dimensions(mm)
Copper terminal block
Hole location diagram
| Specification | 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 |
Order notes:
1. Indicate product specification, central distance between poles, whether need the electric display device(type of the display) or not.
2. Need lengthen the soft link or not(normal L=250mm)
3. Please consult with our company if you have any special request.
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