| Circuit Breaker(CB) |
Type |
MFPT-550-63LB-HAR |
| Rated voltage |
550 kV |
| Rated frequency |
50Hz |
| Rated frequency |
6300A |
| First-pole-to-clear factor |
1.3 |
| Rated short-circuit breaking current (3s) |
63 kA |
| Break time |
≤60ms |
| Rated short-circuit making current |
164 kA |
| Rated peak withstand current |
164 kA |
| Making capacity in short-line fault conditions (L75/L90) |
47.25/56.7kA |
| Rated out-of-phase breaking current |
15.75A |
| Line charging breaking current |
500A |
| Cable charging breaking current |
500A |
| Power frequency withstand voltage |
740/740+315 kV |
| Lightning impulse withstand voltage |
1675/1675+450 kV |
| Rated SF6 gas pressure |
0.6 Mpa.G |
| Operating type |
|
| Disconnecting Switch (DS) |
Type |
FLB-EA |
| Rated voltage |
550 kV |
| Rated frequency |
6300A |
| Rated short-time withstand current |
63 kA (3s) |
| Operating type |
Motor |
| Earthing Switch(ES) |
Type |
FG-EA |
| Rated voltage |
550 kV |
| Rated short-time withstand current |
63 kA (3s) |
| Operating type |
Motor |
| Fast Earthing Switch (FES) |
Type |
FGM-FA |
| Rated voltage |
550 kV |
| Rated short-time withstand current |
63 kA (3s) |
| Operating type |
spring |
| BUS |
Type |
Single-phase enclosed |
| Rated voltage |
550 kV |
| Rated frequency |
4000/6300A |
| Rated short-time withstand current |
63 kA (3s) |
| Rated SF6 gas pressure |
0.6 Mpa.G |