In power system of 6-66KV, when capacitive current associated with single-phase ground fault excess 10A (It is 30A in 6-10KV cable circuit system), arc-supression coil device should be adopted to prevent severe damages. The device is designed based on eletrical standard of DL/T620-1997 (standard of overvoltage protection and insulation co-ordination of AC electrical equipments)
operation environment requirements
1. operating environment temperature range between -20°C~+40°C
2. air relative humidity ≤80%(+20°C)
3. altitude does not excess 2000m (if excess, pls indicate when ordering)
4. crrosive gas is forbidden
5. conductive dust could not exist

