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High and low voltage switchgear includes high-voltage vacuum circuit breakers, high and low voltage complete sets of equipment, oil-immersed power transformers, and modular power transformers. Cable distribution boxes and prefabricated substations are also available. High and low voltage switchgear are core power distribution equipment in all power consumption scenarios, covering multiple fields such as industry, civil engineering, and public facilities.
The VD4 is a classic medium-voltage vacuum circuit breaker from ABB, suitable for 12–46kV medium-voltage power distribution systems. It features a modular spring-operated mechanism and solid-sealed pole design, offering high reliability, maintenance-free operation, and strong adaptability. With over 2 million units installed globally, it is widely used in power plants, industrial power distribution, building power supply, and special applications (such as capacitor bank switching and marine applications), making it one of the benchmark products in medium-voltage switchgear.
A Cable Distribution Box, Also Known As A "Ring Mains Unit" Or "Branch Box," Is A Key Piece Of Equipment In A Power Distribution System. It Is Typically Installed Outdoors (Such As On The Roadside Or In Residential Areas) Or Indoors, Serving As A Connection, Distribution, And Transfer Point For Main Cables And Multiple Branch Cables.
Its Core Function Is Similar To A "Power Strip" Or "Junction Box" In A Household Circuit, But It Operates At High/Medium Voltage (Typically 10kv Or 35kv), Responsible For Safely And Reliably Distributing A Single Power Source To Multiple Power Areas Or Users.
A dry-type transformer is a transformer whose core and windings are not immersed in insulating oil, but rather use solid insulating materials (such as epoxy resin, Nomex paper, air, etc.) as the main insulating and cooling medium. It stands in stark contrast to the traditional "oil-immersed transformer".
Oil-Immersed Transformers, Also Known As Oil-Cooled Transformers, Are The Most Widely Used And Technologically Mature Type Of Transformer In Power Systems. Their Core Feature Is That The Core And Windings Are Immersed In Insulating Oil, Relying On The Oil For Insulation, Heat Dissipation, And Fault Protection.
GCK low-voltage withdrawable switchgear is the most commonly used primary power distribution and control equipment in power plants, substations, large factories, and high-rise buildings. It can be understood as a "power distribution and control system hub" connected after the transformer, receiving low-voltage electricity and performing distribution, control, and protection.
The GGD type fixed low-voltage switchgear is the most classic fixed low-voltage power distribution equipment in China. It is usually used as a secondary power distribution cabinet to distribute electrical energy to the terminal equipment in workshops or buildings.
The GGD type fixed low-voltage switchgear is the most classic fixed low-voltage power distribution equipment in China. It is usually used as a secondary power distribution cabinet to distribute electrical energy to the terminal equipment in workshops or buildings.
The HXGN□-12 (SF₆ type) is a 12kV three-phase AC 50Hz indoor box-type fixed metal-enclosed ring network switchgear. With an SF₆ load switch as its core, it features full insulation, full sealing, maintenance-free operation, and high safety characteristics, making it suitable for ring network/terminal power supply and distribution automation scenarios.
The XGN2-12 is a 3.6~12kV three-phase AC 50Hz indoor box-type fixed metal-enclosed switchgear. With air insulation and modular structure as its core, it is suitable for single busbar/section/bypass systems and is used for power reception and distribution, line control and protection, taking into account both frequent operation and high safety.
The XGN15-12 is a 12kV three-phase AC 50Hz indoor box-type fixed metal-enclosed ring network switchgear. It uses an SF₆ load switch as its core and adopts a semi-insulated/fully insulated hybrid structure. It is suitable for ring network/terminal power supply and the high-voltage side of the box-type substation. It has advantages such as small size, reliable interlocking, low maintenance, and compatibility with distribution network automation.
The KYN28-12 is a 12kV three-phase AC 50Hz indoor armored withdrawable metal-enclosed switchgear. Its core feature is that the circuit breaker adopts a handcart-type structure, which has advantages such as high reliability, strong scalability, and complete five-proof interlocking. It is widely used in the power distribution systems of power plants, substations, industrial and mining enterprises, and high-rise buildings for receiving, distributing, controlling, and protecting against short circuits and overloads. It is one of the most widely used withdrawable switchgear in the 12kV power distribution field.
The KYN61-12 is a 12kV three-phase AC 50Hz indoor armored withdrawable metal-enclosed switchgear, an optimized and upgraded version of the KYN28-12. Its core is a vacuum circuit breaker trolley, and it boasts advantages such as independent compartments, comprehensive "five-proof" protection, convenient maintenance, and compatibility with smart distribution networks. It is widely used in 12kV power distribution systems in power plants, substations, industrial and mining enterprises, and high-rise buildings, undertaking tasks such as power receiving, power feeding, busbar connection, transformer protection, and high-voltage motor control.
