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Re: Re: Re: Re: Re: Re: Re: What hp tractor needed
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Posted by RAB on June 26, 2004 at 09:10:17 from (195.93.34.11):
In Reply to: Re: Re: Re: Re: Re: Re: What hp tractor needed for posted by VaTom on June 25, 2004 at 16:11:30:
Your generator will, like any alternator, require a variable feed to change the field magnetism, dependant on output.
Revolving fields often use a solid state regulator (like your car alternator) and a lot of rotating armature generators use a current transformer as voltage control (field regulation)
I asked 'cos it didn't seem that Newt was too much into generators, so if his 20kW was a 3 phase he might have a bit of a problem running 7kW peak from a single phase - out of balance for a start! Also on 230V, I was kinda wonderin' where he might be.
I'm in UK and single phase is 230V, 3 phase is 410V. 7kW is about tops to run on single phase at 230V and there are not so many 20kw machines around on single phase. My biggest is a 12.5kW. Also most stick welders only run on two phases, so taking 3.5 from 2 phases and nothing from the third. Perhaps MIGs are the same? Could present a problem, but probably only going to use half the power anyway except on striking an arc.
Regards, RAB
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