Product

HV switchgear

Overview

High-voltage switchgear refers to electrical products used in power generation, transmission, distribution, power conversion, and consumption within the power system. They serve functions such as switching, control, or protection, with voltage ratings ranging from 3.6 kV to 40.5 kV. The high-voltage switchgear manufacturing industry is a crucial component of the power transmission and transformation equipment sector and holds significant importance in the entire power industry. 

Main components

The equipment mainly includes several major categories such as high-voltage circuit breakers, high-voltage disconnecting switches and earthing switches, high-voltage load break switches, current transformers, voltage transformers, surge arresters, high-voltage switchgear cabinets, and secondary protection systems. The cabinet is divided into the busbar chamber, circuit breaker chamber, cable chamber, and relay & instrument chamber.

Product advantages

The equipment enclosure can be constructed from materials such as cold-rolled steel plate, aluminum-zinc coated steel plate, galvanized steel plate, or stainless steel plate. It features a fully enclosed structure, assembled with high-strength bolts and tough nuts, offering high strength and strong oxidation resistance. The panels utilize a plastic coating process, ensuring a quality product appearance.

It incorporates a comprehensive electrical "five-prevention" interlocking device.

It is equipped with a comprehensive protection device featuring functions such as overcurrent, instantaneous trip, and short-circuit protection. The protection settings can be adjusted based on actual requirements.

It includes auxiliary functions such as heating and lighting, facilitating personnel maintenance and ensuring normal equipment operation.

Conventional products

Conventional products include KYN indoor AC metal-clad removable enclosed switchgear and XGN box-type fixed metal-enclosed switchgear.

Applications

KYN indoor AC metal-clad removable enclosed switchgear is primarily suitable for power plants, power transmission from small and medium-sized generators, power distribution in industrial and mining enterprises, as well as for receiving and distributing power in secondary substations of power systems, and for starting large high-voltage motors. It is used for control, protection, and monitoring.

XGN box-type fixed metal-enclosed switchgear is mainly used for urban power grid renovation and pre-fabricated substations, and is particularly suitable for 12KV ring main power supply systems. It is applicable to power distribution systems in industrial and mining enterprises, high-rise buildings, residential areas, hospitals, schools, etc., for electricity distribution and protection.