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B105
Gas-Insulated Substations up to 245 kV
GE's B105 GIS is a compact, field-proven solution with high availability that meets the challenges of networks up to 245 kV for power generation, transmission, distribution, tertiary and heavy industry applications. The B105 is available in several ratings:
The B105 is environmentally friendly and features one of the lowest gas weights on the market along with an advanced SF6 sealing system. Full digital monitoring control and protection capabilities enable the B105 to be readily integrated into the smart grid. |
Customer Benefits
Main Characteristics
Environment friendliness
High availability
Low costs of land and civil works
Specifications
General ratings | |||||
Reference electrotechnical standards | IEC/IEEE/GB | ||||
Voltages | up to 245 kV | ||||
Withstand voltages | |||||
- Short-duration power-frequency, phase-to-earth / across isolating distance | 460/530 kV | ||||
- Lightning impulse, phase-to-earth / across isolating distance | 1050/1200 kVp | ||||
Frequency | 50/60 Hz | ||||
Continuous current | 3150/4000 A | ||||
Short-time withstand current | 50/63 kA | ||||
Peak withstand current | 135/170 kAp | ||||
Duration of short-circuit | 3s | ||||
Installation | Indoor/outdoor | ||||
Ambient temperature range | down to -25 / up to +55 °C | ||||
Circuit-breaker ratings | |||||
First-pole-to-clear factor | 1.3-1.5 | ||||
Short-circuit breaking current | 50/63 kA | ||||
Short-circuit making current | 135/170 kAp | ||||
Operating sequence | O-0.3s-CO-3 min-CO/CO-15s-CO | ||||
Drive type (three-phase or single-phase) | Pure-spring | ||||
Breaking time | <50 ms | ||||
Closing time | <100 ms | ||||
Mechanical endurance | M2 class | ||||
Capacitive switching | C2 class | ||||
Disconnector and low-speed earthing switch ratings | |||||
Capacitive current switching | 0.25 A | ||||
Bus-transfer current switching capability | 1600 A / 20 V | ||||
Mechanical endurance | M2 class | ||||
Make-proof earthing switch ratings | |||||
Making current capability | 135/170 kAp | ||||
Switching capability - electromagnetic coupling | 80 A / 2 kV | ||||
Switching capability - electrostatic coupling | 3 A / 12 kV | ||||
Mechanical endurance | M1 class |