Substation EquipmentGas Circuit Breaker
Our Gas Circuit Breaker is the dead tank type designed for rated interrupting current up to 31.5kA, which makes effective use of the high arc-extinguishing and insulation ability of SF6 (sulfur hexafluoride) gas.
(1) Single pressure type (puffer type) arc-extinguishing
Feature
- Simplified structure and operation
- Excellent fault current interrupting ability
- 3-cycle interruption
(2) Dead tank construction
Feature
- Built-in current transformers
- Saving installation cost and space
- Excellent seismic performance with low center of gravity
- Easy maintenance / inspection
Main ratings
| Applicable standard | JEC-2300 |
|---|---|
| Rated voltage [kV] | 72 / 84 |
| Rated normal current [A] | 800, 1200, 2000 |
| Rated breaking current [kA] | 25 |
| Rated making current [kA] | 63 |
| Rated short-time current | 25(2sec) |
| Rated break time [cycles] | 5, 3 |
| Rated operating duty | O-1min-CO-3min-CO O-0.35s-CO-1min-CO |