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Old 09-09-2008, 12:02   #1
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Frequency transformer?

My boat is setup with 2 x 30 amp 110/120v shore power, 7kw generator 110/120v and 3kw xantrex inverter/charger.

I want the option of 220/240v shore power just to power the air con units. I've purchased a 4kva step-down transformer but this will give me 110/120v at 50Hz not the 60 Hz normally used at 110/120v.

Now, I've emailed the air con manufacturer and determined that the units will run but at reduced efficiency and that I must also only use the fans on high speed or they'll burn out.

So, finally, my question is... Is there a device that'll take a 50Hz supply and transform it to 60Hz? If so... What is it and what sort of cost?

Thanks in anticipation.
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Old 09-09-2008, 13:25   #2
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Google < Frequency Converters >, and ignore any returns for "Rotary" converters:

NOVA - GALAXY SERIES - SINGLE PHASE, RACK MOUNT TRANSFORMER ISOLATED FREQUENCY CONVERTER
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Old 09-09-2008, 14:01   #3
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Thanks Gord

It took a while to find example prices for this type of kit and, once I did... well I think I'll settle for running at 50Hz and put up with the limitations!
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Old 09-09-2008, 15:58   #4
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While living in Singapore we ran a lot of us 60 hz appliances at 50 hz. The decrease in efficiency was not noticeable. It can be hard on the motors and we didn't bring any of those appliances back to the states.

George
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