Common cabinet High Voltage Switchgear main secondary component (also known as the secondary device or auxiliary equipment refers to a device to monitor, control, measurement, adjustment and protection of low-voltage equipment), common are the following devices: relays, meter, ammeter, voltmeter Ningguo site distribution cabinets, power meter, power factor meter, frequency meter, fuses, air switch, switch, lights, resistors, buttons, microcomputer integrated protection device and so on. Switchgear shall meet the relevant requirements of GB3906-1991 "3-35 kV AC metal-enclosed switchgear" standard by the cabinet and the circuit breaker two major components, with overhead inlet and outlet, cable inlet and outlet, bus and liaison functions. Cabinet by the housing, electrical components (including insulating parts), various institutions, secondary terminals and wires and other components. RMU is generally divided into air-insulated, solid insulation and SF6 insulated three kinds of site distribution cabinets for the division and load current, breaking short-circuit current and the transformer load current, a certain distance overhead lines, cable lines charging current from control and protection is an important ring network power supply and terminal power supply switching equipment. Jieshou site cabinet distribution cabinet, with air-insulated load switch main gas type, gas pressure type, vacuum, SF6 insulated with SF6 load switch to formula, because the SF6 gas is sealed within the housing, it forms a partition fracture is not visible. RMU in the load switch, generally require three-position, to cut off load isolation circuit by grounding feasible. Gas type, air pressure-load switch and SF6 three-position easy to achieve, and only breaking the vacuum interrupter is not isolated, it is generally ring network switchgear vacuum load before the load switch plus an isolation switch to forming an isolation fracture. Anhui Jieshou site distribution cabinets _ Yu-liang Electric (Online) _ construction site distribution cabinets provided by the Anhui Electric Co., Ltd. Yu Liang. Yu Liang Anhui Electric Co., Ltd. (www.ahyldq.com) is Hefei, low-voltage switchgear leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Yu Liang in Anhui Electrical leadership with the staff warmly welcome all inquiries negotiations to create Anhui Yu-liang Electric better future.