Need help with electrikity

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oldtrack123
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Re: Need help with electrikity

Post by oldtrack123 »

Hi Rob
If so ,THAT would be a fair indication that the wave form is not a near pure sine wave as claimed.
Perhaps not as bad as MSW [modified SQUARE wave] but still with noticable steps & resultant spikes with some inductive loads,so not PURE sine wave
Have you tried it with a pure resistive load[elecric element, such as 3way fridge,elecric kettle /jug etc??
I know one particular brand of claimed PSW inverter genny has a very poor wave form [not much better than a MSW]

edit
I see that while I was posting you came up with the answer , that on a pure resistive load it did operate around 50Hz


The steps in the sine wave ouput [not smooth curve] are causing inductive spikes when connected to inductive loads
Some instruments will pick up those spikes more than others which is why you see the great variations.
They can actualy be harmonics of the original steps.[the hundreds]

Such are unlikely to have sufficient energy to affect most gear,such as motors & certainly not resistive loads
But could give operation problems with some electronic equipment AND highly inductive loads[ such as ballasted fluoro lights

Actual damage is unlikely

It would be interesting to know if this is typical of Honda Inverter gennys
It is of another brand!
Cannot name but begins with an E ;)

Peter
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Wilbor
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Re: Need help with electrikity

Post by Wilbor »

Hi Peter
Just tried it on a jug with the Watts Clever monitor & it showed

241v 60hz no load

Jug on 10.1amps
232v 60hz

I also tried it on a ballasted fluro and it works fine. I have never had any problems with this gen set; it has worked on everything from micro-wave ovens, computers, plasma televisions, fridges, water pumps and electronic washing machines etc. It has never given an ounce of trouble and my perceived problem now is only because I happened to have the watt monitor on the freezer when the power went down and I happened to notice it. Other than that I would not have even suspected it was anything other than 50hz. Now I am not really sure if it is working as per specs or not. I think for peace of mind I will have to get to a Honda tech that knows about inverter generators and has the necessary equipment to test it
Rob
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Re: Need help with electrikity

Post by T1 Terry »

Hi Rob,
Have you checked your watt meter on the mains? What volts and hertz does it show?
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Wilbor
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Re: Need help with electrikity

Post by Wilbor »

Hi Terry, yep on the mains it shows correct voltage and 50hz

just tried it on the Seltronic PSW inverter in Wilbor

no load
241v 50 hz

electric jug
231v 50hz 10.1amps

(Battery monitor 86amps going out of the batteries & that's at 24v) :shock:
Rob
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Re: Need help with electrikity

Post by T1 Terry »

just tried it on the Seltronic PSW inverter in Wilbor

no load
241v 50 hz

electric jug
231v 50hz 10.1amps

(Battery monitor 86amps going out of the batteries & that's at 24v)
231v x 10.amps = 2333watt, divides by 86Amps that calculates out to the batteries being at 27.12v, that sound about right?
so the meter reads correctly, time to visit the Honda specialist, something wrong in the iverter side, it does sound like possibly a dirty sinewave signal as Peter suggests, it needs someong to put a CRO on the output while under load.
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oldtrack123
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Re: Need help with electrikity

Post by oldtrack123 »

Hi Terry
I believe he has checked it on MAINS ;)

Hi Rob

Only an oscilloscope can verify if the basic wave frequency is 50 H
There is a sneaky way of of removing [filtering ]those possible spikes that may be giving a false indication,or if they were ving an effect on some equipment ,But it would involve some experimenting for that particular unit ;)
Best to see what Honda have to say
It should have an internal adjustment to set the base frequency.
But would be a waste of time talking to a dealer
You need to get to a Service/ repair centre

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Re: Need help with electrikity

Post by supersparky »

I reckon that the oscilloscope will tell the story. Could just be inverter spikes like Oldtrack said. They do your head in all the time.
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