Description
JN15-12 indoor HV earthing switch is applied to power system of rate voltage 12kV/40.5kV, and AC 50/60Hz. It is suitable for various types HV switchgear for earthing protection.
The whole earthing switch consists of chassis, supporting insulator, main axis, main blade, fast spring, fixed and moving contact. Additional electronic display is also available according to the requirement. It conforms to GB1985 AC HV disconnect switch and earth switch, relative standards IEC60129 and passes KEMA test
Environment condition
Ambient temperature: -25℃~+40℃
Altitude: ≤1000m
Relative humidity: monthly average ≤90%; daily average: ≤95%
Earthquake intensity: ≤8 degree
Technical Data
| Rated voltage (kV) | 12 | 40.5 | |
| Rated short-time withstand current (thermal stability) (kA) | 31.5 | 31.5 | |
| Rated short-circuit duration (s) | 4 | 4 | |
| Rated short-circuit making current (kA) | 80,100,125 | 80 | |
| Rated peak withstand current (dynamic stability) (kA) | 80,100,125 | 80 | |
| Central distance between poles (mm) | 150,165,210,230,250,275 | 350,385,460 | |
| Rated insulation level | 1min.PF withstand voltage (kV) | 42/49 | 95 |
| Lightning impulse withstand voltage (kV) | 75/85 | 185 | |
| Mechanical lift (Times) | 2000 | ||
Outline & Mounting Dimensions 
