Generator: 115 / 220vac at the Same Time

[siroismi]

Hi everyone

I have been using for a while now my Bauer Junior II 240V 50Hz with a voltage transformer fead by my Northern Light 6kw set on 120V because I need it so for the rest of my needs on the boat.

No damage to anything so far. Running a 50hz motor on 60hz turns at a slightly higher rpm. Premature wear??? Running a 60hz motor on 50 hz runs slower and overheats.

My 2 cents

Michel

[Overlord]

yes i can but wont it be easier on the generator with a 240v motor as it draws have the amps as a 110v motor.I ask this cause being a 7.6kw , i am on the edge being able to run this dive compressor

[Lancerbye]

Originally Posted by chris smith

yes i can but wont it be easier on the generator with a 240v motor as it draws have the amps as a 110v motor.I ask this cause being a 7.6kw , i am on the edge being able to run this dive compressor

Yes. You will have a lower current draw from your dive compressor when using a 240v motor. Easier load on the generator. Don't worry about the 60Hz. Higher freq. is better than lower for the motor.

[Overlord]

are you saying , use the 230v 50Hz motor i have and wire it to the 240v side of my genset ? or a 240v 50Hz...confused

[Lancerbye]

It wil work.

[chala]

So you have the following options.
Keep the 230V motor, change the wiring of your alternator and adjust the speed each time you wishes to run your compressor. A hassle that can be made easier by the use of a switch. Also be aware that feeding by mistake 230V to yours 120V appliance may destroy the lot. 220, 230, 240V all the same more or less.
As suggested use a suitable transformer. Extra weight.
Replace the motor with a 2 or 4 poles 120V motor suitable for compressor duty and adjust the pulley ratio accordingly, check with the manufacturer if they can supply this option.
More delicate wire the generator at 230v 60 Hz and tap 120V to the 120V appliances and see if it work, do not electrocute your-self. By the way 2.2kW at 220V is the same than 2.2kW at 130V only the current is different.