Question about NEC Mitsubishi MGE 2900 Generator- Voltage Regulation:AVR. Frequency: 60

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How to adjust voltage output from generator ?

I have got 2.2kv generator... and voltage output on its volt meter shows as 210v instead of 220v... whereas all electrical appliances are working fine...
i just need to knw y its volt meter shows 210v instead of 210V ? and needle of volt meter is not stable it keeps moving slightly when generator is on. is this normal ?

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As long as your appliances are working properly I wouldn't worry. A 10V drop from the norm is not that crazy and certainly not abnormal. If it drops down to 205 or 200 then I would worry. I'm not familiar with the internal components of a home generator but I would imagine they are not as precise as the machines the power companies use. And when you look at it from a phase point of view its even less of an issue. There are 110-120V per single phase and 220-240V double phase. So on each phase your only dropping 5V out of that range. And as far as the needle jumping, again not very precise, and it will probably move even more while its generating. If the voltage does happen to drop more check for a loose neutral wire, that will often cause crazy voltages, but so far I see nothing to worry about.

Posted on Jun 01, 2010

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Do not play with it you are talking 240 volt.
I have been there & done that with a 2.2 kva genset.
what start as a small spring that broke, I thought I could just bend a new hook on the end of the spring & connect it again, the problem with that was by making the spring shorter it incrieced the engine revs & I burntout a power drill motor within a matter of seconds. I learnt a lot after speaking to the sparky who repaired the genset. you need to have all the proper gauges to adjust the current & volts. I can say it would seem the engine rev has a lot to do with the output.
Hey if you think theirs a problem take it to the sparky get him to test it, Don't do it yourself we could be talking life or death.

Posted on Jun 01, 2010

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