Metal-clad switchgear panels for 12-40.5kV distribution networks. KYN28, KYN61, HXGN, RMU series with vacuum circuit breakers.
High voltage switchgear is electrical equipment used to control, protect, and isolate electrical equipment in power distribution networks operating at 12kV to 40.5kV. It contains circuit breakers, disconnectors, earthing switches, and protection relays in a coordinated assembly. Metal-clad switchgear (KYN series) has each major component enclosed in grounded metal compartments, providing maximum safety for operators and preventing fault propagation between phases. Air-insulated switchgear (AIS) uses air as the primary insulation medium, while gas-insulated switchgear (GIS) uses SF6 for compact design. Ziyao Power manufactures KYN28 (12kV), KYN61 (40.5kV), HXGN ring main units, and RMU (ring main unit) series. All switchgear is equipped with vacuum circuit breakers (VS1, ZN85) for reliable arc interruption without SF6 greenhouse gas.
Where high voltage switchgear are used in real-world power infrastructure projects.
Primary distribution substations for step-down from transmission to distribution voltage.
Main incoming panels and motor control centers for factories.
Ring main units for shopping centers and business parks.
Collector systems for solar farms and wind parks.
Metro traction substations and airport power systems.
Explore our range of high voltage switchgear for various voltage levels and applications.
Real-world installations using our high voltage switchgear.
Technical guides and resources about high voltage switchgear.
KYN28 is rated for 12kV systems, suitable for most industrial and commercial distribution. KYN61 is rated for 40.5kV, used in larger industrial plants and utility substations. Both use vacuum circuit breakers and have similar metal-clad construction.
Vacuum circuit breakers have no greenhouse gas, lower maintenance, and longer electrical life. SF6 is a potent greenhouse gas (GWP 23,500x CO2) facing increasing regulation. Vacuum technology is the environmentally responsible choice for MV switchgear.