Why a Power Generator Is Running But no Voltage Is Produced?

by Starlight Generator dieselgeneratortech

If the generator has not been run for a long time or if it was left with a load connected while it was not running, then one of the more likely causes is loss of residual magnetism. Most small generators do not have magnets but have two sets of coils, one that spins and one that is stationary. When these generators start up, if there is no magnetic field at all, then there will be no power created. Usually there is a very small residual field from the last time the generator ran which make a very small amount of power which then makes the magnetic field stronger which makes more power and this cycle continues until the generator is producing its rated power (after a very short period of time, usually by the time the engine has spun up to normal operating speed).

 

There are a few methods of restoring a generator residual magnetism

 

12 Volt Generator Battery Method

 

Locate the voltage regulator for your generator.

Unplug the two wires that connect to the generator brushes. Normally one is red and the other is black or white.

Connect the black or white to the generator ground battery terminal.

Plug in a light, turn on the generator breaker or switch and start the motor.

Connect the battery +12 volts (red cable) to the red wire on the terminals you removed for three seconds.

Remove your wires and replace the plug. The generator should now be producing power again.

Make sure you unplug the brush wires from the automatic voltage regulator or you will damage the regulator. Do not contact the voltage regulator or other wires as dangerous voltages may be present that can cause electric shock.

 

Electric Drill Method

 

Plug in an electric drill into the generator receptacle.

If the drill is reversible, move the direction switch to the forward position.

Start the generator.

While depressing the trigger on the drill, spin the drill chuck in reverse direction. This will excite the field and the generators will now produce electricity. If spinning the chuck one direction does not work, try spinning the chuck in the other direction as you may have the reverse switch positioned backward.

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Created on Oct 10th 2019 02:14. Viewed 213 times.

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