High-voltage switchgear is used for power system generation, transmission, distribution, power conversion and consumption of the role of interruption, control or protection, High-voltage switchgear in accordance with the level of voltage in 3.6kv~550kv Electrical products, High Voltage Switchgear high-voltage isolation switch and earthing switch, high-voltage load switch, high voltage automatic overlap and segmentation, high pressure operating mechanism, High-voltage explosion-proof distribution equipment and High-voltage switchgear and other major categories.
High-voltage switchgear is based on a certain wiring scheme will involve one, two times equipment Assembly of a high-voltage power distribution assembly, in the power plant and substation as the control and protection of electrical and mechanical, power transformers and High-voltage lines used. It is equipped with high voltage switchgear, protective apparatus, inspection and measuring instruments and busbar, High Voltage Switchgear insulators and so on. High-voltage switchgear has a fixed and handcart type of two categories, generally in small and medium-sized factories in the substation, the vast majority of the use of more economical fixed-type high-voltage cabinets. Handcart Type Switch cabinet is unique: High voltage circuit breaker and other primary equipment is installed in the handcart can be pulled forward. High Voltage Switchgear When the equipment inspects repairs, when any time pulls out and pushes into the similar handcart, then can restore the power supply, has the inspection repair benefit and the safety, and may greatly reduce the power outage time the merit, but the price is high.
High-voltage switchgear cabinet components are mainly high-voltage circuit breakers, High Voltage Switchgear high-voltage isolation switches, high-voltage load switches, high-pressure operating mechanisms.
High-voltage switchgear is an electric cabinet equipment used in electric power system. The function of high voltage switchgear is to open, control and protect the power system for power generation, transmission, distribution and power conversion. High-voltage switchgear cabinet components are mainly high-voltage circuit breakers, high-voltage isolation switches, high-voltage load switches, high-pressure operating mechanisms. High-voltage switchgear are classified into many ways, such as through the installation of circuit breakers can be divided into open high-voltage switchgear and fixed high voltage switchgear cabinet, High Voltage Switchgear or in accordance with the different structure of the cabinet, divided into open high voltage switchgear, metal closed box-type High-voltage switchgear, metal closed-spaced high-voltage switchgear and metal-enclosed armored high voltage switchgear and other cabinets.
High-voltage switchgear cabinets Meet the National standard GB3906 "3~35kv AC metal closed switchgear" and the international standard IEC298 requirements, and have "five anti" locking function.
High-voltage Switchgear main switch adopts ZN28A-10 series vacuum circuit breaker with CD10 series and CD17 series and CT8 series and ct17/ct19 series Spring actuator, according to user needs can also use zn28-10, ZN73 and other integral type circuit breaker, Isolating switch adopts gn30-10 rotary isolating switch, High Voltage Switchgear gn22-10 large current isolating switch and gn30-10 rotary type large current isolating switch series.
Five protection of high voltage switchgear cabinet
Vacuum circuit breaker in HV switchgear Cabinet The trolley circuit breaker is unable to enter the work position after the test position is switched on. (Prevent load closing)
When the grounding knife in the high voltage switchgear is in the closing position, High Voltage Switchgear the trolley breaker cannot enter and close. (Prevent the grounding line from closing)
The vacuum circuit breaker in the high voltage switchgear is closed with the mechanical and door of the grounding knife in the back door of the enclosure. (Prevent the misuse of the charged interval)
The vacuum circuit breaker in the high voltage switchgear is closed at work and cannot be put into a grounding knife. (prevents the grounding line from being electrified)
The vacuum circuit breaker in the high voltage switchgear is unable to exit the working position of the trolley circuit breaker when the working switch is running. (Prevent the load pull the knife)