110kV GIS Gas Insulated Switchgear | SF6 Metal-Enclosed Switchgear
110kV Gas Insulated Switchgear (GIS)
Product Overview
SOLARIS 110kV Gas Insulated Switchgear (GIS) is a fully integrated, metal-enclosed switchgear system designed for 110kV (126kV class) three-phase AC 50/60Hz power systems. It encloses all core primary components – including circuit breakers, disconnectors, earthing switches, current/voltage transformers, busbars, surge arresters, and line bushings – in a grounded metallic tank filled with SF6 gas, which acts as both insulation and arc-extinguishing medium. This design delivers superior performance in a compact footprint, making it ideal for urban substations, industrial power plants, and areas with limited space or harsh environmental conditions.
Key Features
Ultra-Compact Design: The GIS requires only 10-20% of the space needed for conventional air-insulated switchgear (AIS), drastically reducing substation land costs and installation time.
High Reliability & Safety: Fully sealed SF6 gas enclosure eliminates exposure to dust, moisture, pollution, and wildlife, minimizing the risk of flashovers and equipment failures.
Low Maintenance Requirements: With hermetically sealed components and long-life SF6 gas, the system operates maintenance-free for decades, reducing operational costs and downtime.
Robust Environmental Adaptability: Suitable for coastal, industrial, desert, and high-altitude environments, withstanding extreme temperatures, humidity, and pollution levels.
IEC/GB Compliant: Designed and tested to meet international standards including IEC 62271 and GB/T 11022, ensuring consistent performance and compliance with global power grid requirements.
Modular Configuration: Modular bay design allows flexible expansion, easy integration with other substation equipment, and simplified installation and commissioning.
Core Components & Functions
Circuit Breaker: The heart of the GIS, using SF6 gas for arc extinction to safely interrupt fault currents with minimal wear and high reliability.
Disconnector & Earthing Switch: Three-position design (open/closed/earthed) ensures safe isolation and grounding for maintenance operations.
Current/Voltage Transformer: Integrated into the GIS enclosure for accurate metering, protection, and control of power system parameters.
Busbar System: Compact, SF6-insulated busbars eliminate external insulation risks and reduce overall footprint.
Surge Arrester: Protects the system from lightning strikes and switching overvoltages, ensuring equipment longevity.
Line Bushing: Sealed, pollution-resistant bushings connect the GIS to overhead lines or underground cables, maintaining SF6 gas integrity.
Technical Parameter
Parameter | Value |
Rated voltage | 126kV (110kV class) |
Rated frequency | 50Hz / 60Hz |
Rated current | 1250A, 2000A, 3150A, 4000A |
Rated Short-Circuit Breaking Current | 31.5kA / 40kA / 50kA |
Rated Short-Circuit Withstand Current (3s) | 31.5kA / 40kA / 50kA |
SF6 Gas Pressure (at 20°C) | 0.6MPa (typical, gauge pressure) |
Enclosure Material | High-quality aluminum alloy / stainless steel |
Insulation Medium | SF6 gas (purity ≥ 99.99%) |
Ambient Temperature Range | -40°C ~ +55°C |
Altitude Adaptation | ≤ 3000m (customizable for higher altitudes) |
Applications
Urban and semi-urban substations with limited land availability
Industrial power plants, mines, and oil & gas facilities
Coastal and industrial zones with high pollution or salt fog
High-altitude and cold-climate regions
Renewable energy projects (wind/solar farms) requiring compact substation solutions
Why Choose SOLARIS 110kV GIS?
Proven Manufacturing Expertise: Built on years of experience in high-voltage equipment production, with strict quality control and factory testing for every unit.
Customizable Solutions: Tailored configurations to meet specific project requirements, including special voltage classes, current ratings, and environmental adaptations.
Comprehensive Support: Full lifecycle services including design, manufacturing, installation supervision, commissioning, and after-sales maintenance.
Cost-Effective Operation: The compact design reduces civil construction costs, while low maintenance needs minimize long-term operational expenses.
Certified Quality: ISO 9001, ISO 14001, and OHSAS 18001 certified production facilities, ensuring consistent quality and environmental compliance.
Contact Us
For inquiries, custom quotes, or technical support, please reach out to our team:
Email: solaris@hvglass.com
Phone: +44 751 6292642
Telegram: t.me/SolarisELE
Website: http://hvglass.com
