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Generator is putting out high voltage. What could be the problem?

Posted by Todd Delahoussaye on

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Kardoc

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Generator voltage is regulated with a voltage regulator. Depending on what type of generator depends on what type of regulator it uses.

Posted on Sep 01, 2020

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3 Related Answers

John Trevino

  • 1420 Answers

SOURCE: High voltage low cycles

I worked at a tool rental center while going to college and learned how to service generators. Most appliances/tools require 50 to 60 cycles at 110 to 120 v. Your engine was designed to give maximum horsepower at 3600 rpm. Adjust the engine speed to produce 60 cycles and the engine should be at 3600 rpm and producing around 120v max. (Some special generators were designed to produce 230v 180 cycles, check manual) If your generator incorporates capacitors check them for at least 95% of printed uf value. They should be removed from circuit for testing. If there are two caps and one is weak make sure the new cap reads close to value of remaining cap. Finally there is usually a voltage regulator that varies the power to the armature magnet trying to maintain steady voltage depending on amp draw and engine condition. This regulator has no adjustment and is pass or fail type of item. Good luck, enjoy

Posted on Dec 18, 2008

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CarlGlas

Carl Glas

  • 283 Answers

SOURCE: I have a yamaha ef3000iseb generator. Runs well,

The model you have shows to be a Inverter. You may have a defective voltage regulator. Visit the below URL for a dealer near you.
www.yamaha-motor.com/outdoor/dealers/dealerhome/home.aspx

Posted on Jul 07, 2010

heatman101

D. Floyd Kolb

  • 43501 Answers

SOURCE: What is the "no load"

Hi,

All though that is on the very high side it is acceptable for a no load voltage... as soon as you put nay load on there it will drop....
You want the voltage to be on the very high side in a no load state so that you have room for it to drop some with a load...
I would not worry about what you have there...

heatman101

Posted on Oct 24, 2010

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