High-voltage switchgear

The SRM16-12 fully insulated gas-insulated ring main unit manufactured by the company has successfully passed type tests conducted by the National High-Voltage Electrical Apparatus Testing Center. This product is widely used in 10 kV/6 kV distribution systems and is the preferred switchgear for substations and distribution networks in both urban and rural areas. The switchgear adopts a modular unit design, allowing flexible configuration to suit various applications. It comprises two main categories—fixed‑type units and expandable units—meeting the demand for compact, versatile switchgear in diverse substation settings.

Environmental protection cabinet

The ES-HSM6-12 environmentally friendly gas-insulated metal-enclosed switchgear employs vacuum arc-extinguishing chambers for arc quenching, with an environmentally friendly gas as the primary insulating medium, supplemented by a small number of solid insulating supports. Its main circuit operates at zero gauge pressure or slightly positive pressure (with the gas‑filled enclosure pressure not exceeding 0.02 MPa), and its interphase and phase‑to‑ground insulation performance meets the air‑insulation requirements under zero gauge pressure. This type of environmentally friendly gas‑insulated metal‑enclosed switchgear is one of the most widely used three‑phase AC intelligent gas‑insulated switchgear cabinets and is extensively applied in various complete switchgear assemblies.

Solid cabinet

The GTXGN-12 solid‑insulated, fully enclosed ring‑main unit is a fully insulated, hermetically sealed, maintenance‑free vacuum switchgear. All high‑voltage live parts are encapsulated in epoxy resin with excellent insulating properties, integrating the vacuum arc‑extinguishing chamber, the main conductive circuit, and the insulating supports into a single monolithic structure. Functional units are interconnected via fully insulated solid busbars. Consequently, the switchgear is unaffected by external environmental conditions, ensuring reliable operation and safeguarding personnel safety.