ZF27-1100 GIS
Inquire NowDescription
The ZF27-1100 GIS is an advanced gas-insulated switchgear designed for the control, measurement, protection, and transformation of electric transmission lines. Developed independently by Pinggao, this system integrates essential components such as circuit breakers, current transformers, disconnectors, earthing switches, main busbars, incoming and outgoing line bushings, and a local control cabinet. With a rated voltage of 1100 kV and a rated current of up to 6300 A, the ZF27-1100 GIS is a powerful solution that has already been implemented in the Jindongnan Substation, part of China’s first ultra-high voltage AC demonstration project, showcasing its status as a leading product in the global market.
Main Features:
- Voltage level of 1100 kV
- High current carrying capacity with 8000 A for disconnectors and busbars
- Exceptional breaking capacity rated at 50 kA
Specifications
| Specifications | 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 |
| Across isolating distance | kV | 1100(+635) | |
| Rated lightning impulse withstand voltage (peak) | To earth & between pole | kV | 2400 |
| Across isolating distance | kV | 2400(+900) | |
| Rated SF6 gas pressure (20℃) | CB compartment | MPa | 0.65 |
| Others | MPa | 0.45 | |
| Rated SF6 annual leakage | % | ≤0.5 |
Additional Information
For optimal performance, it is advised to regularly inspect the GIS system and maintain appropriate SF6 gas levels. This ensures reliability and longevity in power transmission applications.
