Generator Question

Speed up the generator....

I can't speed the generator up because the frequency is already 61.5 off load if the speed it up the ups would start trip out i did try that thanks.

Have you read the manual?

Check the wave form. Is the power filtered?

You may need a turboencabulator to clean up the power enough for cfl and led use.

That's pretty large, but is it by any chance an inverter-type generator? Also, how heavily is it loaded - and what size wire is connected to your generator? Like old laser printers that would flicker the lights, I think many cfl's and led's use very non-linear power supplies.

The generator is rated at 55 amps but the building is only using 30 amps. The generator is driven by a two cyclinder diesel engine (kipor) and the size of wire used is 16mm.

16mm? That sounds huge for even 55 amps. But you could try plugging in one of your lights at the generator and see if it flickers to rule out the wiring/connection. I doubt your problem comes from the engine. More likely some electrical interaction between a non-linear load and the generator's control. Maybe some filtering would help, but that's outside my expertise.

16mm is was used because of the distance its like about 200 ft distance i did disconnect all the load and connect two cfl bulbs separately and still having same results

What is the frequency of the voltage output?

What is the waveform of the voltage output?

What is the the RMS and peak voltage of this output?

What is the current and phase angle of this current?

Do any of my questions make any kind of sense to you? If they do why didn't you tell us this information in the first place? If they don't make sense to you, hire somebody that knows electricity.

Is it a motor driven generator ?

If yes, then check the RPM,

If it is an old one it may have been designed for 25 cycle AC output, the rpm would be 750 for a 4 pole generator.

Your LED's & CFL's probably will not work well on 25 cycle supply.

Also check the slip ring brushes, if one is missing you could be getting 1/2 wave supply.

The alternator is driven by a two cyclinder kipor engine. The frequency is stable, the voltage stable, rpm is stable as well. The only thing i could get to check the wave form cause i don't have any instrument to test that. I did all test that i know possible but same result. To my view it could be the engine what you think

Well do these lights flicker all of the time or some of the time?

What frequency do these lights flicker at 30 HZ, a few times a second, once a week?

Does the power at these lamps not the generator flicker at the same rate as the light produced?

Does you DMM or analog voltmeter show the same voltage at these lamps as what is happening at the generator?

How close to the maximum power output is this generator producing?

How many questions have I now asked that you've not answered?

[Sorry but I sometimes get a little snarky when my attempts to help get ignored. Must be the latest snow and a lack of coffee.]

The lights flicker all the time, the frequency is 61.5hz off load and 61hz on load. Sorry i didn't get to check the waveform cause i don't have the instrument. but what i did was i disconnect all the load and test the cfl bulbs separately and same results am getting, the avr was adjust and same result. The thing is that the frequency, voltage, rpm all are stable. The only thing is that the engine is a two cyclinder one

Well my computer display has a refresh rate 60 HZ. My monitor does not noticeably flicker so I do not believe the noticeable flicker rate of your lamps is 61.5 HZ. I presume then this frequency datum is an indirect frequency measurement of the AC power this generator is producing and not the flicker frequency that I keep asking about.

I've tried to work with you to solve this but it seems like we are destined to misunderstand each other. If your lamps flicker only when an additional load is connected to the generator then I suspect the problem lies in the mysterious additional load. A cyclical short circuit maybe overloading the generator faster than your equally mysterious instrumentation. If these lamps flicker when they are the only load on the generator then how could you possibly draw 30 amperes of current with them.

It is hard to solve a problem with just 20 questions. It is impossible to solve a problem when the questions are not understood.

Hire an electrician.

Good Luck.

Dear Mr.gen11,

I had once a similar problem of flickering. In our country the supply frequency is 50 Hz, and this frequency OF 50 or 60 has nothing to do with the flickering.

The Earthing of the generator as well as the earthing for the lighting circuit - wiring was checked and corrected for loose connection. The flickering has stopped.

Pl. check your earthing and its resistance. Pl. post the information to this forum, how the problem of flickering is solved.

DHAYANANDHAN.S