Product definition
Installation drawing and hole location diagram
Hole location diagram
| Product model | AND | F | G | H | D | C |
| JN15-24/31.5-210 | 210 | 75 | 160 | 655 | 516 | |
| JN15-24/31.5-22O | 220 | 75 | 160 | 735 | 536 | |
| JN15-24/31.5-23O | 230 | 75 | 160 | 810 | 556 | 96 |
| JN15-24/31.5-25O | 250 | 75 | 160 | 810 | 596 | 96 |
| JN15-24/31.5-275 | 275 | 75 | 185 | 810 | 646 | 96 |
Introduction
JN15-24/31.5 series indoor earthing switch is a new design and improved on the Jnl5 typejthe installing size without any changeLsuitable with electric power system with 20-24KVJhree-phase, AC 50(60)Hz, support with various kinds of HV switchgear and as earthing protection. It is complied with GB1985-2004 and IEC129 standard.
Working condition
1. Ambient temperature： -10X ~ +40°C;
2.Altitude： W 1000m
3.Relative humidity： Day average relative humidity w 95%；
Month average relative humidity w 90Cang
4.Earthquake intensity： w 8degree；
5. Class of pollution： II
Mainly technical parameters
| Item | Unit | Data | |
| Rated voltage | KV | twenty four | |
| Rated short time withstand current (thermal stability) | THE | 31.5 | |
| Rated short circuit withstand time | S | 4 | |
| Rated short circuit making current | THE | 80 | |
| Rated peak withstand current (dynamic stability) | THE | 80 | |
| Rated insulation leve | Rated short time power frequency withstand voltage | KV | 65 |
| Rated lightning impulse withstand voltage | 95 | ||
| Mechanism Life | time | 2000 |
