Table of Contents
Why is my generator producing high voltage?
It is due to fluctuating engine speed on dirty or clogged fuel, a dirty fuel filter, and insufficient fuel, to mention but a few. A high RPM can result in a high generator voltage. You can also produce similar results by failing to accurately set the frequency (Hertz) of the generator.
How does AVR control the output voltage of the generator?
An AVR is a feedback control system that measures the output voltage of the generator, compares that output to a set point, and generates an error signal that is used to adjust the excitation of the generator. As the excitation current in the field winding of the generator increases, its terminal voltage will increase.
How do you reduce the voltage of a generator?
Adjust the throttle of the generator to increase or decrease RPMs of the machine’s motor. Slowing the RPMs decreases the voltage output; increasing RPMs increases the voltage output. The throttle is normally located on the top or side and has RPM written on it.
What is the AVR of a generator?
The AVR is an electronic circuit which is regulating the output AC voltage of the generator produced. AVR is monitoring the generator voltage all the time and regulating it to a certain value. The regulation is achieved by controlling the field current.
What is an automatic voltage regulator (AVR)?
Without doubt, an Automatic Voltage Regulator (AVR) is one of the most crucial electrical components in a generator. It efficiently maintains the terminal voltage of you generator and enables it to operate smoothly however, they are not immune to being faulty.
What should I do if my AVR is not working?
Avoid exposing your generator to excessive load as well as excessive power. A faulty AVR can cause permanent damage to your generator if not sorted as soon as possible. When working with a tight budget you can always try to repair your current AVR.
How do I adjust the AVR output voltage?
The AVR output can be adjusted through a potentionmeter or variable resistor to get the appropriate output voltage. That variable resistor is located on the AVR body. One can adjust it using a screw driver. The wiring to the AVR and from the AVR to the carbon brushes should be firmed and tight.