Load Switching Principle Analysis Of Automatic Voltage Regulator Contactor Km In Compensated State

In the design of whole house voltage regulator, contactor KM is used to disconnect or connect the load in compensated mode because three phase voltage regulator needs to respond to load changes in real time to maintain a stable operating state. Contactor KM detects voltage deviations and automatically adjusts the output voltage according to set compensation parameters to ensure that the power system does not experience overvoltage or undervoltage conditions when the load changes. At this time, the role of contactor KM is to quickly disconnect or connect the circuit, thereby optimizing voltage distribution and preventing damage to equipment. Therefore, contactor KM in 3 phase automatic voltage regulator plays a crucial protective role in the power system.