T168
Gas-Insulated Substations up to 550 kV
GE makes the most of 50 years of experience in design, material selection, development, engineering, manufacturing and servicing of gas-insulated substations. GE's T168 GIS meet the challenges of networks up to 550 kV for all applications: power generation, transmission and heavy industry.
The T168 is compact and accessible, with a bay footprint 12% below previous version.
In addition, the T168 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 T168 to be readily integrated into the smart grid.
T168
Gas-Insulated Substations up to 550 kV
GE makes the most of 50 years of experience in design, material selection, development, engineering, manufacturing and servicing of gas-insulated substations. GE's T168 GIS meet the challenges of networks up to 550 kV for all applications: power generation, transmission and heavy industry.
The T168 is compact and accessible, with a bay footprint 12% below previous version.
In addition, the T168 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 T168 to be readily integrated into the smart grid.
Customer Benefits
Characteristics
Environment friendliness
- Gas mass reduced by 6% compared with previous version
- First-in-class SF₆ sealing system
- Advanced gas management systems
High availability
- Reliability is founded on GE’s extensive experience at 550 kV
- Current transformers outside SF₆
- Outstanding accessibility: drives and accessories at easy reach
Low costs of land and civil works
- Bay volume reduced by 12% compared to previous models
Smart grid features
- Full-digital monitoring, control and protection
Ratings
| Bay | ||
| Reference electrotechnical standards | IEC/GB | |
| Voltage | kV | 550 |
| Withstand voltages | ||
| Short-duration power-frequency, phase-to-earth/across open switching device | kV | 740 / 740 (+315) |
| Switching impulse, phase-to-earth / across isolating distance | kVp | 1 300 / 1 175 (+450) |
| Lightning impulse, phase-to-earth / across open switching device | kVp | 1 675 / 1 675 (+450) |
| Frequency | Hz | 50 / 60 |
| Continuous current | A | up to 6300 |
| Short-time withstand current | kA | 63 |
| Peak withstand current | kAp | 170 |
| Duration of short-circuit | s | 3 |
| Installation | indoor/outdoor | |
| CIRCUIT-BREAKER RATINGS | ||
| First-pole-to-clear factor | 1.3 | |
| Short-circuit breaking current | kA | 63 |
| Short-circuit making current | kAp | 170 |
| Operating sequence | O-0.3s-CO-3 min-CO/CO-15s-CO | |
| Capacitive switching | Class | C2 |
| DISCONNECTOR AND LOW-SPEED EARTHING SWITCH RATINGS | ||
| Capacitive current switching | A | 0.5 |
| Bus-transfer current switching capability | A / V | up to 4000 / 100 |
| MAKE-PROOF EARTHING SWITCH RATINGS | ||
| Making current capability | kAp | 170 |
| Switching capability-electromagnetic coupling | A / kV | up to 200 / 25 |
| Switching capability-electrostatic coupling | A / kV | up to 50 / 50 |
| other data available on request. | ||
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