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Generator Protection Switchgear
According to modular design concept, the type generator protection switchgear is consists of the following components: SF6 generator circuit-breaker, disconnector, earthing switch, VT, CT, capacitor, control cabinet, driving device, interlocking device, bottom shelf and cover assembly. This type switchgear has been widely used in hydroelectric, nuclear power, thermal power station or other substations
- The puffer arc-extinguishing can extinguish rated interrupting current, especially in the side of small interrupting current, it feature excellent and stable performance of interrupting.
- According to modular design concept, The combination of the different components may be selected according to the needs of the customer. The compact design and operating procedure with the space-saving and low cost
- With the especial hydraulic operating mechanism and 3-phase mechanical linkage, it feature excellent in the side of mechanic capability and work reliability
| Rated voltage |
18 kV |
24kV |
| Rated frequency |
50 Hz |
| Rated current |
6300 A 8000A 10000A 11000A |
| Rated short-time withstand current(3s/2s) |
> 63kA 80kA / 100 kA |
| Rated peak withstand current |
172.6kA 219.2kA 274 kA |
| Rated breaking current |
63kA 80kA |
| Rated making current |
172.6kA 219.2kA 274 kA |
| Rated power frequency withstand voltage(1 min.) |
53kV |
65kV |
| Rated power frequency withstand voltage when the gauge pressure located at 0 MPa (5 min.) |
13.5kV |
18kV |
| Rated lightning impulse withstand voltage |
100kV |
125kV |
| Operating sequence |
CO-15min-CO |
| Leakage rate/ year and gas compartment |
≤0.5% |
| Ambient temperature |
-15…+40 ℃ |
Generator Protection Switchgear
This type GCB can work at 18kV/24kV, indoor, three-phase,50Hz, great current. within the interrupting chamber SF6-gas is used for both arc extinguishing and internal insulation
- The puffer arc-extinguishing can extinguish rated interrupting current, especially in the side of small interrupting current, it feature excellent and stable performance of interrupting.
- According to modular design concept, The combination of the different components may be selected according to the needs of the customer. The compact design and operating procedure with the space-saving and low cost
- With the especial hydraulic operating mechanism and 3-phase mechanical linkage, it feature excellent in the side of mechanic capability and work reliability