B105 & T155
Hybrid Gas-Insulated Switchgear
The B105 & T155 H-GIS Hybrid Gas-Insulated Switchgear meet the challenges of networks up to 550 kV in power generation, transmission and heavy industry applications.
The B105 & T155 are compact and accessible, with a bay footprint 40% below the market average. Complete bays are assembled, wired, tested and shipped enabling shorter site works.
In addition, the B105 & T155 are 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 & T155 to be readily integrated into the smart grid.
B105 & T155
Hybrid Gas-Insulated Switchgear
The B105 & T155 H-GIS Hybrid Gas-Insulated Switchgear meet the challenges of networks up to 550 kV in power generation, transmission and heavy industry applications.
The B105 & T155 are compact and accessible, with a bay footprint 40% below the market average. Complete bays are assembled, wired, tested and shipped enabling shorter site works.
In addition, the B105 & T155 are 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 & T155 to be readily integrated into the smart grid.
Customer Benefits
Main Characteristics
Environment friendliness
- Lowest gas weight on market
- First-in-class SF₆ sealing system
High availability
- Best experiences and high data reliability
- Current transformers outside SF₆
- Pure-spring circuit breaker drives
- Outstanding accessibility: drives and accessories at easy reach
Short site works
- Complete bays assembled, wired, tested and shipped
Specifications
| General ratings | |||
| Reference electrotechnical standards | IEEE/IEC/GB | IEEE/IEC/GB | IEEE/IEC/GB |
| Voltages | 253 kV | 362/420 kV | 550 kV |
| Withstand voltages | |||
| - Short-duration power-frequency, phase-to-earth / across open switching device | 460/530 kV | 680/815 kV | 710/925 kV |
| - Switching impulse, phase-to-earth / across isolating distance | 1050/900(+345) kVp | 1175/900 (+450) kVp | |
| - Lightning impulse, phase-to-earth / across open switching device | 1050/1200 kVp | 1425/1425(+240) kVp | 1550/1550(+315) kVp |
| Frequency | 50/60 Hz | 50/60 Hz | 50/60 Hz |
| Continuous current | up to 4000 A | up to 5000 A | up to 5000 A |
| Short-time withstand current/Duration of short-circuit | 50-63 kA / 3 s | 63 kA / 3 s | 63 kA / 3 s |
| Ambient temperature range | down to -30 °C / up to +55 °C | down to -30 °C / up to +55 °C | down to -30 °C / up to +55 °C |
| Circuit-breaker ratings | |||
| First-pole-to-clear factor | 1.3 - 1.5 | 1.3 - 1.5 | 1.3 |
| Short-circuit breaking current | 50-63 kA | 63 kA | 63 kA |
| Short-circuit making current | 135-170 kAp | 170 kAp | 170 kAp |
| Operating sequence | O–0.3s–CO–3 min–CO/CO–15s–CO | O-0.3s-CO-3 min-CO/CO-15s-CO | O-0.3s-CO-3 min-CO/CO-15s-CO |
| Drive type | Pure-spring | Pure-spring | pure-spring or hydraulic |
| Breaking time | 3 cycles | 2 cycles | 2 cycles |
| Mechanical endurance | M2 class | M2 class | M2 class |
| Capacitive switching | C2 class | C2 class | C2 class |