3000va Automatic Voltage Regulator Stabilizer with Ei or Toroidal Transformer

.What is AVR?

    AVR is an abbreviation of Automatic Voltage Regulator, it is in particular referring to AC Automatic Voltage Regulator. It is also known as Stabilizer or Voltage Regulator.

.Why install an AVR?

    In this world there are many places of power supply condition is not good, a lot of people are still experiencing constant surges and sags in voltage. Voltage fluctuation is a major cause to damage of home appliances. Each appliance has a certain input voltage range, if the input voltage is lower or higher than this range, it caused a definitely damage in the electricity. In some cases, these appliances just stop working. The AVR is designed so as to solve this problem, it is designed to have a generally wider input voltage range than normal electrical appliances, which increase or suppress the input low and high voltage within the acceptable range.

.When the switch is turned on, why AVR can't start the work?

    It is possible caused by: 1) Improper connection, there might be loose contact from the AC mains and or from the AVR to the appliances; 2) overloading, the power capacity of the connected appliance exceed the stabilizer maximum output power. Usually in this case, the fuse will blow up or the circuit breaker will trip off; 3) Different frequency between the AVR output frequency and the frequency of the electrical appliance. Therefore, 1) make sure that the utility power is properly connected to the AVR and the AVR to household appliances; 2) ensure that AVR is not overloaded. 3) make sure the AVR output and loaded appliances in the same frequency range.

.All instructions are displayed normally on the AVR, but why the AVR has no output?

    This may caused by the output circuit failure. And it should only be checked by a qualified electrical appliance repairer.

 .When you switch on the AVR, why the LED lights display "unusual" ?

    This may be caused by the following reasons: 1) high or low input voltage exceeds the AVR input voltage range; 2) high temperature protection; 3) circuit failure. Therefore, we should 1) wait until the input voltage return back to the AVR adjustment range, 2) switch off the AVR and let it cool down, 3) bring to the service center for repair.

.Why does the AVR immediately trip off when it is switch on?

    If the AVR immediately trip off, it means that the loading capacity must exceed the fuse amperage or circuit breaker amperage; in this case, you need to reduce the load, or use a larger capacity of the AVR to power the loaded appliance.