Electrical control cabinets are assembled with switchgear, measuring instruments, protective devices, and auxiliary equipment according to electrical wiring requirements, either in enclosed or semi-enclosed metal cabinets or panels. Their layout should meet the requirements for the normal operation of the power system, facilitate maintenance, and not endanger the safety of personnel or surrounding equipment. During normal operation, circuits can be connected or disconnected using manual or automatic switches. In the event of a fault or abnormal operation, the circuit can be disconnected or an alarm can be triggered by protective devices. Measurement instruments can display various parameters during operation and can also adjust certain electrical parameters, providing alerts or signals for deviations from normal operating conditions. They are commonly used in power generation, distribution, and transformation stations.