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dc motors Answered

Hi: Can anyone tell me why my 24volt dc motor which I just got rebuilt will only work on 12 volts and immediatly overheats and stops with 24 volts? Thanks, Royal

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Kiteman

10 years ago

You broke it? If you had somebody else rebuild it for you, they are probably the best people to answer your question.

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craKiteman

Reply 10 years ago

That is why I am asking here, he says it works on 12 volt so should work on 24 volt. It's 25 years old and needed rewound presumably from age and heat.

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lemoniecra

Reply 10 years ago

Ah, "he" says it works on 12 volt so should work on 24 volt. Maybe this is the problem. If the motor was originally running @ 24V and now it doesn't then the shop hasn't rebuilt it correctly?

L

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NachoMahma

10 years ago

. The motor may have been rewound for 12V. . The motor leads may need to be configured for 24V operation.

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craNachoMahma

Reply 10 years ago

Are you implying the lead wire to the commentator or brushes?I suspect he may have used a larger size wire on the rewind. Would that do it?

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NachoMahmacra

Reply 10 years ago

. Some motors will have multiple coils. When wired in parallel, they work at a lower voltage. In series for higher voltage. This may only apply to AC motors - I don't have much experience with DC motors.

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lemonie

10 years ago

Who rebuilt this and why? What sort of motor is it etc? L

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cralemonie

Reply 10 years ago

A small motor shop. It runs a short duty hydraulic pump for cylinders. 15amp max no load.