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Frequency Conversion 60 HZ to 50 HZ
4

Frequency Conversion 60 HZ to 50 HZ

Frequency Conversion 60 HZ to 50 HZ

(OP)
I have an A/C system that normally runs on 220V, 50 HZ, and the shore power feed is 208V, 60 HZ. Assuming that I will damage the equipment if I run it on 208V 60 HZ, is there an inexpensive solution to converting the frequency, or do I have to change all the components so they run on 60 HZ? Is it possible the systems will run on 60 HZ without damaging the components?

RE: Frequency Conversion 60 HZ to 50 HZ

It depends on the "components".

RE: Frequency Conversion 60 HZ to 50 HZ

(OP)
The components in question are the compressor motors, the blower motors, and the coils on the reversing valves

RE: Frequency Conversion 60 HZ to 50 HZ

With the available 60Hz voltage lower than the normal 50Hz voltage there is not a cheap solution.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Frequency Conversion 60 HZ to 50 HZ

Put a VFD between the shore power and your components.

Muthu
www.edison.co.in

RE: Frequency Conversion 60 HZ to 50 HZ

You will probably need a transformer at least. Then each piece of equipment must be evaluated individually. Some may operate on the higher voltage and frequency, some may need extra steps such as the VFD that Muthu suggests.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Frequency Conversion 60 HZ to 50 HZ

Running compressors and blowers at 120% speed will cause them to try and do about 140% to 170% extra work which will severely overload the motors.

A common VFD between the shore power and the ship is not a good solution because you will likely try to start and stop motors connected to the output of the running VFD. This will cause premature failure of the VFD, despite claims by some people that with proper sizing it's possible. It can also cause random VFD trips which would cause ship power blackouts during the time it does work.

Solenoids or contactor coils would expect 264V at 60Hz to operate correctly.
 

RE: Frequency Conversion 60 HZ to 50 HZ

Are you able to run your A/C off of your house bank?  Perhaps thru a large inverter?   If you can, then you have half the battle won.   You just need to add a battery charger that can dish out the same power your A/C requires.  Then you are supplying the A/C thru your battery charger.  The DC link is your frequency converter.

If not then you can install both an inverter and a charger.  Large inverters have gotten pretty reasonably priced. This would actually be a nice improvement to your Lagoon as it would allow just about any seaport operation. Look at Xantrex for chargers.  They also have large inverters.

Keith Cress
kcress - http://www.flaminsystems.com

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