Description
The ZF27-1100 GIS is an advanced gas-insulated switchgear (GIS) system, meticulously engineered by Pinggao for the control, measurement, protection, and transformation of electric transmission lines. This sophisticated unit integrates a circuit breaker, current transformer, disconnector, earthing switch, main busbar, incoming and outgoing line bushing, along with a local control cabinet. With an impressive rated voltage of 1100kV and rated current of 6300A, the ZF27-1100 GIS has set a benchmark in the industry, being utilized at the Jindongnan Substation, recognized as the premier ultra-high voltage AC demonstration project in China, showcasing world-class technology.
Main Features:
- Voltage level: 1100kV
- High current carrying capacity: 8000A for disconnector and busbar
- Exceptional breaking capacity: 50kA breaking current
Specifications
| Specification | Unit | Value |
|---|---|---|
| Rated voltage | kV | 1100 |
| Rated current | A | 6300 |
| Rated frequency | Hz | 50/60 |
| Rated short-time withstand current (r.m.s) | kA | 50 |
| Rated peak withstand current | kA | 135 |
| 1min rated power frequency withstand voltage (r.m.s) to earth & between pole | kV | 1100 |
| 1min rated power frequency withstand voltage (r.m.s) across isolating distance | kV | 1100(+635) |
| Rated lightning impulse withstand voltage (peak) to earth & between pole | kV | 2400 |
| Rated lightning impulse withstand voltage (peak) across isolating distance | kV | 2400(+900) |
| Rated SF6 gas pressure (20℃) in CB compartment | MPa | 0.65 |
| Rated SF6 gas pressure (20℃) Others | MPa | 0.45 |
| Rated SF6 annual leakage | % | ≤0.5 |
Additional Information
This state-of-the-art GIS system is designed for optimal performance and reliability in high voltage environments. Regular maintenance and monitoring are recommended to ensure the longevity and efficiency of the equipment. The ZF27-1100 GIS is a testament to cutting-edge engineering in the energy sector.
