How To Solve The Problem Of Automatic Voltage Stabilizer Failure?

Previously, we introduced various fault manifestations and troubleshooting methods of voltage stabilizers. Today, we will analyze how to solve the fault problem of Automatic Voltage Regulator.

Common faults of automatic voltage stabilizers generally include: unable to start-unbalanced voltage after starting, high and low phenomena-no voltage indication in one phase, serious imbalance of voltage in each phase, etc. Next, we will focus on these situations:

The following are some reasons for the analysis and treatment of automatic voltage stabilizer failure phenomena:

1. Unable to start

Analysis reason: unreliable input wiring; or no input voltage

Solution: Rewire and check for broken wires; use a voltmeter to measure whether there is voltage in the input wiring

2. Unbalanced voltage in each phase after starting, high and low phenomena

Analysis reason: abnormal input voltage; reverse connection of input and output wires; each phase does not work properly; input neutral wire is not connected or wiring is unreliable

Solution: Check whether the power grid is normal; check the wiring and correct it; check whether the connection of each connector is loose; connect Good neutral line (if the neutral line is not connected, when adjusting the output voltage of a certain phase, the voltage of another phase will also change accordingly)

3. No voltage indication in one of the three phases

Analysis reason: The wiring of the terminal corresponding to the phase is unreliable

Solution: Check the connection status of the wiring of the phase and use the multi-ohmmeter to test whether it is open

4. The voltmeter on the panel indicates that the voltage of each line is seriously unbalanced

Analysis reason: The voltage of each phase of the power grid exceeds its voltage regulation range; the load is seriously asymmetric

Solution: Loads with high requirements for three-phase balance, such as three-phase motors, must be shut down and the power grid must be checked; adjust each load to ensure the balance of each phase as much as possible.