Product definition
JN17-12/50 (old type is JN15-12/50) series indoor high voltage earthing switch is a new design and improved product of us according to the ESI type, the structure is assembled, suitable with electric power system with 3-10KV, Three-phase,AC 501601Hz, support with various kinds of HV switchgear and earthing protection. It is complied with GB1985-2004 and IEC129 standard.
Working condition
1. Ambient temperature：-10°Cone+40°C
2. Allitude：1000m Isensor heighi：140mm)
3. Relative humidity： Day average relative humidity w 95% Month average relative humidity w
4. Earthquake intensity： w 8degree
5. Dirtiness degree： II
Mainly technical parameters
| Item | Unit | Data | |
| Rated voltage | KV | 12 | |
| Rated short time withstand current (thermal stability) | THE | 50 | |
| Rated short circuit withstand time | S | 4 | |
| Rated short circuit making current | THE | 125 | |
| Rated peak withstand current (dynamic stability) | THE | 125 | |
| Rated insulation leve | Rated short time power frequency withstand voltage | KV | 42 |
| Rated lightning impulse withstand voltage | 75 | ||
| Machinery Life | time | 2000 |
◎ JN17-12/50earthing switch（ES-10/31.5） Outline and installation dimension
Copper terminal block
Hole location diagram
| Specification | AND | F | G | H | D |
| JN17-12/5O-21O | 210 | 50 | 185 | 655 | 516 |
| JN17-12/50-220 | 220 | 50 | 185 | 675 | 536 |
| JN17-12/50-230 | 230 | 50 | 85 | 695 | 556 |
| JN17-12/50-250 | 250 | 50 | 185 | 735 | 596 |
| JN17-12/50-275 | 275 | 50 | 210 | 810 | 646 |
Order notesdndicate product specification, central distance between poles, if the electric display deviceltype ot me displaylneeded or not Please note the soft link length when ordering （normal L=250mm）.
Please consult with us if you have any special request.
