Gas Insulated Switchgear (GIS) for Power Transmission
This gas insulated switchgear (GIS) is a high-voltage electrical apparatus for power transmission and distribution systems. It features gas insulation, typically SF6, and incorporates circuit breakers, disconnectors, earthing switches, and transformers within a sealed enclosure.
Technical Specifications
Product Overview
High-Performance 1100kV GIS
This 1100kV Gas Insulated Switchgear (GIS) is engineered for ultra-high voltage power transmission, providing comprehensive control, measurement, and protection for electrical lines. The system features a modular design including circuit breakers, disconnectors, and earthing switches to ensure reliable operation within a compact footprint. Designed for extreme electrical conditions, it offers industry-leading breaking capacity and robust thermal performance for critical infrastructure applications.
Key Performance Metrics
Core Specifications
Electrical Ratings
- Rated Frequency
- 50 Hz
- Rated Short-time Withstand Current (r.m.s)
- 50 kA
- Rated Peak Withstand Current
- 135 kA
Insulation and Withstand
Dielectric Withstand Ratings
| Metric | To Earth & Between Pole | Across Isolating Distance |
|---|---|---|
| 1min Power Frequency Withstand (kV) | 1100 | 1100(+635) |
| Lightning Impulse Withstand (peak kV) | 2400 | 2400(+900) |
Gas System Specifications
Rated SF6 Gas Pressure (20°C)
- CB compartment: 0.65 MPa
- Others: 0.45 MPa
- Rated SF6 Annual Leakage
- <= 0.5%
Technical Features
- Key Capabilities
- Ultra-high voltageCompact footprintHigh current capacityModular design
