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 |