Gas Insulated Switchgear


Gas Insulated Switchgear (GIS) is a type of switchgear used in high voltage power systems. GIS uses insulating gas as the insulating medium, and the commonly used gas is SF6. The use of insulating gas can significantly reduce the size of the equipment, making it suitable for applications requiring high voltage transmission and distribution, such as substations and industrial areas.

Compact Design:  The GIS has a gas insulated construction that allows high voltage components to be installed in a sealed metal container, giving the equipment a compact design. Compared to AIS, GIS is smaller and takes up less space, making it suitable for site limited applications.

High Safety:  GIS uses a sealed metal housing to effectively prevent the high voltage components contact with the outside environment, providing a high level of safety. In addition, GIS is designed to provide fire protection and explosion protection, further enhancing the safety of the equipment.

Reliability and Stability:  GIS uses special insulating gas (such as SF6 gas) as the insulating medium, which has high electrical insulation properties. The insulating gas is not easy to decompose, making GIS switchgear maintain stability and reliability in long term.

Adapt to Harsh Environment:  The sealed design of GIS makes it able to resist harsh environmental conditions, such as high temperature, low temperature, humidity, dusty, etc. Therefore, GIS is preferentially used in coastal areas, high altitude areas, desert areas and other places with harsh environments.

Low Operating Costs:  Because of its good insulation performance, GIS can use smaller insulation clearances, which reduces material and installation costs and greatly reduces required installation areas.

Scalability and Flexibility:  GIS can be flexibly modularized, and the modules can be added or removed, and the layout can be adjusted as needed. This flexibility makes GIS suitable for power systems of different capacities and configurations, allowing for convenient expansion and upgrades.

As professional MV switchgear manufacturer, we provide fully customization service according to the customer’s local requirements, electricity standards, environments, climates and so on. The followings are supported for customization:

Rated Voltage:  According to the customer’s local electricity standard, we support various the option of adapting the rated voltage. Common rated voltage includes 3.6kV, 7.2kV, 11kV, 12kV, 17.5kV, 22kV, 24kV, 33kV, 36kV, etc., depending on the requirements of the local power supply standard.

Rated Current:  According to the customer’s load demand and power system capacity, we provide suitable rated current options. Common rated current options include 630A, 1250A, 2000A, etc.

Environmental Adaptation Solution:  According to the environmental conditions of the customer’s location, the corresponding protection solution is provided for high temperature, humidity, high salinity, high corrosion and other harsh environments to ensure stable operation of the equipment.

Short-Circuit Withstand Capability: According to the short-circuit current level of the power system in the customer’s location, we provide the corresponding short-circuit withstand capability options. This usually involves the rated short time withstand current and the rated peak withstand current of the equipment.

Operation Method:  According to the customer’s needs, we provide the appropriate operation method options, such as manual operation, remote control operation, automated operation, etc.

Wiring Method:  According to the customer’s local power system requirements and distribution layout, we provide suitable wiring method options, such as top incoming, bottom incoming, side incoming, etc.

Control and Protection System:  According to the customer’s requirements, we provide suitable control and protection system options, such as telemetry and telecontrol, fault alarm, protection relay, etc.

Equipment Size and Installation Method:  According to the conditions of the customer’s site, we provide suitable equipment size and installation method options to ensure that the switchgear can adapt to the existing layout and installation requirements.

Additional Special Requirements:  Feel free to let us know if any other requirements we didn’t list above.

Feel free to contact us for any questions, or anything you think we could help. We are here to support in any way we can!

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