Products Description
Product Introduction
Kechang High Voltage Gas Insulated Switchgear (GIS is designed for reliable power distribution and control in substations, industrial facilities, renewable energy projects, and other medium- and high-voltage applications. By combining gas insulation, a compact metal-enclosed structure, and optional intelligent monitoring functions, GIS switchgear provides a practical solution where safety, space efficiency, and reliable operation are important.
Compared with conventional air-insulated switchgear (AIS), the sealed structure of GIS allows electrical components to be arranged more compactly while providing protection against dust, moisture, and other environmental conditions. Kechang GIS is available for voltage levels from 12kV to 40.5kV, with configurations customized according to project requirements.
Product Advantages
Environmentally Friendly Insulation
Kechang GIS can be configured with environmentally friendly insulating gas solutions as an alternative to conventional SF6-based insulation. The low-GWP insulation approach helps customers address increasingly strict environmental requirements while maintaining the insulation performance required for medium-voltage power distribution.
This makes the equipment suitable for green buildings, renewable energy facilities, urban substations, and other projects with sustainability requirements.
Compact and Space-Saving Design
The sealed gas-insulated structure significantly reduces the space required for electrical equipment compared with traditional AIS solutions. This is particularly useful for urban substations, commercial buildings, data centers, industrial plants, and renewable energy projects, where installation space can be limited.
The modular design also allows different functional units, protection devices, and control components to be arranged according to the electrical system.
Reliable Protection in Different Environments
The main electrical components are enclosed inside a sealed metal housing, helping protect the equipment from dust, humidity, salt spray, and other external conditions. A stainless-steel enclosure and high-quality sealing system can improve long-term reliability in demanding installation environments.
Depending on the project configuration, GIS can be adapted for indoor or outdoor applications and for different climatic and installation conditions.
Integrated Monitoring and Intelligent Operation
For projects requiring condition monitoring, GIS can be equipped with sensors and monitoring modules for parameters such as gas pressure, temperature, and partial discharge. Communication interfaces such as RS485 and Modbus can be integrated to support remote monitoring and facilitate condition-based maintenance.
These functions help operators identify abnormal conditions earlier and improve the efficiency of equipment inspection and maintenance.
Long Service Life and Low Maintenance
The enclosed structure reduces the exposure of internal components to external contaminants and environmental conditions. With proper installation, commissioning, and regular condition monitoring, GIS can provide long-term service for substations and power distribution systems.
The equipment can also be configured with different operating mechanisms, protection devices, and control systems according to the required duty cycle and project specifications.
Applicati
on Scenarios
Kechang High Voltage GIS Switchgear can be used in:
Power substations – high-voltage power distribution, switching, and protection.
Power generation plants – thermal, hydro, solar, and other generation facilities.
Industrial facilities – factories, refineries, mining projects, and large manufacturing plants.
Commercial buildings – high-rise buildings, shopping centers, and data centers.
Renewable energy projects – solar farms, wind farms, and energy storage facilities.
Infrastructure projects – airports, railways, transportation facilities, and urban power networks.
Kechang provides customized Gas Insulated Switchgear solutions based on voltage level, rated current, short-circuit capacity, protection requirements, installation conditions, and communication functions. Technical drawings, testing documents, and project-specific configurations can be provided for overseas projects.
With manufacturing experience in power transformers and switchgear, Kechang supports customers from technical selection and configuration to production, testing, and delivery, providing a complete solution for reliable power distribution.
Product Specifications
| Project | Unit | Parameter | |
| Rated voltage | KV | 40.5 | |
| Rated frequency | HZ | 50 | |
| Rated current | A | 630,1250,1600,2000 | |
| Rated short circuit breaking current | A | 20,25,31.5 | |
| Rated short circuit current (peak) | KA | 50,63,80 | |
| Rated dynamic current (peak) | KA | 50,63,80 | |
| 4s thermal current (rms) | KA | 20,25,31.5 | |
| Rated insulatin level | Lightning impulse withstand voltage (full wave) | KA | 185,215 |
| Power trequency withstand voltage (1min) | KV | 95,118 | |
| protection level of cabinet | KV | The protection level of cabinet is IP4X, and the protection level between each compartment and in the moment when the circuit-breaker room is opened is IP2X. | |
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