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Xantrex inverters and motors
By dave123, Section Homebrewed Electricity Posted on Tue Oct 11, 2005 at 04:02:40 PM MST
starting motors

Hello,
I am considering an inverter/charger of 2500 amp continuous rating, and and trying to decide between a Xantres Freedom 2512, or the Prosine 2.5. Both have the same continuous rating but the 2512 has a higher surge rating (Prosine is only 4000 watts, I think the 2512 is 6000+). This is primarily for an RV, but I want to size it accordingly to work as an emergency backup to either my home furnace OR my fridge or freezer. Anyone have any experience in either? the Prosine is considerably more expensive, but it would also save me from having to get a smaller (400 watt) sine wave inverter later for sensitive electronics. Plus, the Prosine comes with a basic remote, which will be required due to the inverter location. That saves a few more bucks over the 2512. I realize the higher surge rating is better for motor starting, but what about the efficiency of the sinewave vs modified sine, on starting the same motor?

Xantrex inverters and motors | 1 comment (1 topical)

Re: Xantrex inverters and motors (3.00 / 0) (#1)
by maker of toys on Tue Oct 11, 2005 at 11:25:41 AM MST

induction motors will be happier and last longer on 'pure' sinewave power. they will also heat less, and will probably be easier to start. Universal motors (anything with a wound field and a commutator) don't care much about the wave-form they get; however, the variable speed feature in things like hand drills will be extremely touchy on MSW.

that said, it is now possible to purchase 'inverter duty' motors- you'll find them quite often on new machine tools and other 'industrial' equipment that is likely to see service with a VFD (variable frequency drive). most of that stuff is 3 phase, but I think if you look hard enough, some of the major manufacturers (Baldor, GE, Dayton) can supply a single phase inverter-duty motor that will survive (if not thrive) on MSW power.

-Dan

It's not a case of 'Save the planet,' it's a case of 'Save the humans.'

Xantrex inverters and motors | 1 comment (1 topical)

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