3 replies to this topic

[one79]

Dear everyone. I need advice, I do not know much about electricity.

I have a pump with 400 V (50 Hz) motor. I want to use it on a vessel with 440 V (60 Hz) power supplied. What should I do? I know that I have to get a step down transformer and frequency converter to adjust the power supplied on board of the vessel to suits the pump's motor. Now the problem is, I do not know what equipment to buy. Can I just get an inverter? Are there any inverters that can step-down voltage as well as reduce frequency at the same time?

Any help is greatly appreciated.

[AB2005]

You need 8V/HZ ratio for your application and available ratio is 7.33V/HZ. The best option is to install an inverter drive and program its V/HZ ratio according to your application which is quite easy. But during purchasing of inverter, make it sure that it would be designed for 440V.

[marke]

The spped of an induction motor is determined by the frequency of the supply.
If you take a pump designed to operate on 50Hz and run it on 60Hz, the speed is 20% higher. The power used by the pump is considerably higher and would certainly overload the motor.
You would nned to either increase the motor size considerably, or change the pump impellor.
The simplest solution is to use a VFD to set the frequency and voltage to 50Hz and 400V.

Best regards,
Mark.

[Eurybates]

Probably a bit late now, but just rewound a 400V 50Hz to 400V 60Hz for same application. May have been a much faster and cost effective alternative..... Just to have my say.