Switchgear

"JECSANY" is a professional China various medium and high voltage product provider which supplies vacuum circuit breakers, auto reclosers, switchgear, surge arresters, dropout fuses, polymer/porcelain insulators, power tools, power accessories, OPGW/ADSS, distribution transformers, Switchgear，etc. And be able to provide one-stop service for new and old customers, including product development, design, manufacturing, transportation, installation, and after-sales service.

Main Functions

1. Control: Switching circuits on or off to enable flexible control of the power system.

2. Protection: Quickly disconnecting faulty circuits in cases of short circuits, overloads, or ground faults to protect equipment and personnel.

3. Isolation: Isolating circuits during equipment maintenance or repair to ensure operational safety.

4. Power Distribution: Distributing electrical energy to different loads or circuits to ensure stable operation of the power system.

Classification

Switchgear can be classified based on voltage level, installation type, insulation medium, and application scenarios:

1. 1. By Voltage Level

      • Low Voltage Switchgear (LV Switchgear): Suitable for applications with voltage levels below 1 kV, commonly used in distribution systems and industrial equipment.

      • Medium Voltage Switchgear (MV Switchgear): Suitable for voltage levels between 1 kV and 35 kV, often used in distribution networks and industrial power systems.

      • High Voltage Switchgear (HV Switchgear): Suitable for voltage levels above 35 kV, primarily used in transmission systems and large substations.

   2. By Installation Type

      • Fixed Type Switchgear: Equipment is fixed in place, with a simple structure and lower cost.

      • Withdrawable Type Switchgear: Modular design for easy maintenance and replacement, suitable for applications requiring frequent operation.

   3. By Insulation Medium

      • Air Insulated Switchgear (AIS): Uses air as the insulation medium, featuring a simple structure and low cost but requiring more space.

      • Gas Insulated Switchgear (GIS): Uses SF6 gas as the insulation medium, compact and highly reliable, suitable for space-constrained environments.

      • Solid Insulated Switchgear: Uses solid insulation materials, environmentally friendly and maintenance-free, suitable for compact distribution systems.

   4. By Application Scenario

      • Indoor Switchgear: Installed indoors, with better environmental conditions and relatively simple structures.

      • Outdoor Switchgear: Installed outdoors, designed to be dustproof, waterproof, and weather-resistant for harsh environments.

Switchgear is a critical component in power systems, used for controlling, protecting, isolating, and distributing electrical energy. It ensures the safe, reliable, and efficient operation of power systems under normal, fault, or maintenance conditions. Switchgear is widely used in power stations, substations, industrial facilities, as well as commercial and residential distribution systems.