You are not familiar with the choice of Low-voltage switchgear yet

2025-10-16 14:40:35

Low-voltage switchgear refer to electrical products used for power generation, transmission, distribution, energy conversion, and consumption in the power system, such as on-off, control, or protection functions. Low voltage complete switchgear are classified into several categories, including high-voltage isolating switches and grounding switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices, and Low voltage electrical equipment, with voltage levels ranging from 3.6kV to 550kV. Low-voltage switchgear are mainly suitable for various places such as power plants, substations, petrochemicals, metallurgy and steel rolling, light industry and textiles, factories and mines, residential areas, high-rise buildings, etc.

To ensure the safety of high-voltage electrical components in Low voltage complete switchgear during normal operation, maintenance, short circuit, and overvoltage situations, Low-voltage switchgear should be selected according to the following conditions:

(1) Select based on environmental conditions including temperature, humidity, altitude, earthquake intensity, etc;

(2) Select according to normal working conditions including voltage, current, frequency, mechanical load, etc;

(3) Select based on short-circuit conditions including short-time withstand current, peak withstand current, rated short-circuit closing and breaking current, etc;    

(4) Select based on the ability to withstand overvoltage, including insulation level, etc;

(5) Select according to the different characteristics of various high-voltage electrical appliances, including the operational performance of switches, the protection characteristics of fuses, the load and accuracy level of transformers, etc.