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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