Power regulator is a kind of power supply equipment that can automatically adjust the output voltage, it can make the fluctuation of unstable power supply voltage stabilization in the corresponding range, so that all kinds of circuits and electrical equipment in the normal voltage stable work. Power regulator can be said to be a very effective and safe electrical auxiliary equipment, the application range is very wide. However, it is a process, for various reasons, there will inevitably be some problems. The following is a small compilation of common failures of power regulators and repair methods.
First, when the power on, the voltmeter does not indicate
Reasons for failure
1, the power plug is not plugged in tightly, the voltage is not output.
2, the fuse is broken.
Maintenance method
1, check the power outlet, the power plug firmly.
2, check the fuse, according to the requirements of the replacement of compliant fuse.
Second, the voltage regulator can stabilize the voltage, but the value of the voltage regulator shifted
Reasons for the failure
1, the voltmeter reads an inaccurate value
2, the voltage trimmer potentiometer is shifted.
Maintenance method
1, check the voltmeter, repair or replace it as appropriate.
2, the voltage trimmer potentiometer for correct adjustment.
Third, the voltage regulator coil burned out
The cause of the failure
The load of the voltage regulator is too large, and has exceeded the normal load range of the voltage regulator.
Maintenance method
Replace the voltage regulator coil. When replacing, pay attention to the regulation voltage and the installation position of the coil, if you can not operate correctly, even if you replace the coil, it will burn out again.
Four, connected to the regulator after the circuit breaker switch tripped
Malfunction causes
1, the regulator's input line is connected to the wrong.
2, high breaking circuit breaker switch rated current is not correct.
Maintenance method
1, check the input line of the voltage regulator, connect it correctly.
2. Replace the appropriate high break circuit breaker.
V. The output voltmeter keeps swinging back and forth and the carbon brushes produce sparks
Reason for failure
1, the carbon brushes are severely worn.
2, carbon brush and voltage regulator coil plane contact pressure is too small.
Maintenance method
1, replace the new carbon brush.
2, use a fine file or sandpaper to deal with the carbon brush and the voltage regulator coil, and then adjust the pressure of the carbon brush.
Six, three-phase does not start, no output voltage
Fault causes
1, the control circuit board does not work.
2, the control circuit board in the protection state.
3, the input phase is missing.
Maintenance method
1, the control circuit board does not work is generally dropped or damaged itself, need to repair or replacement.
2, the control circuit board in the protection state, generally the input phase line voltage beyond the regulated range, as long as the input voltage can be adjusted.
3, the correct input three-phase, should be three-phase four-wire system or five-wire system.
The above is a small compilation of common failures of power supply voltage stabilizer and maintenance methods, I hope to help you better use of power supply voltage stabilizer. As long as the need for power to stabilize the voltage of the place will use the power regulator, it can be seen that its role is very large. If there is a problem in the process of use, it should be promptly checked and repaired to ensure the normal work of the power regulator. For friends who do not understand the circuit, it is best not to disassemble and repair privately, to ask a professional to help.
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