Vacuum Circuit Breaker (Indoor , ZN28 Series)
Detailed Product Description
Vacuum Circuit Breaker (Indoor ,ZN28 Series)
General
ZN28-12 series vacuum breaker is HV indoor switchgear with rated voltage 12kv , 3 phases AC 50Hz .
Main Technical Parameter
| Item | Unit | Parameter | |||||||
| Rated voltage | KV | 12 | |||||||
| Rated current | A | 630 | 1000 | 1250 | 1600 | 2000 | 2500 | 3150 | |
| Rated Frenquency | Hz | 50 | |||||||
| Rated short-circuit interrupting current | KA | 20 | 25 | 31.5 | 40 | ||||
| Rated insulation level | 1 min power frequency withstand voltage | KA | 42 | ||||||
| lightning impuslse withstand voltage | KA | 75 | |||||||
