Motor Conversion

You are right since the current will increase to accommodate the extra power. However check back if it is permanant Y, and if it is connected to Δ then you may get some advantage. But little chance of it.

thnx for reply

hi,everyone

I need drive DC motor with specification :

-current operation is 5A

-volgate operation is 48V

We are design system controller of EDM machaine,the only unusual part is control DC motor: Motor down with speed 20mm/s,pulse control is 80%,50% and 20% when it's operation in electroder.Motor up with speed is 100%.

You can convert since Number of turns will decrease by 6.6/11 and conductor cross section will Increase By 11/6.6

Also Voltage you are going for is decreased, means You can use Thinner insulation.That will offer more space.

Also You can convert same motor to Half voltage (5.5KV) just by changing connections to parallel. But certain conditions applied.

Dear Rakesh semwal

Thank for your reply

What are the conditions to reduce to half the voltage

Regards

Jaipaul

No of coils/slots/poles to each phase has to be allocated in such a way that it can divided exactly in a pair.

For simple example if you have a motor with 4coils with each phase. Then it can be divided in pair Like below picture and be connected in parallel .

Top one is before alteration and bottom one is after.

Your better off asking a professional motor rewinding company. Your other option is to use a step-down transformer (which may actually be a cheaper alternative depending on your application).

Why do you want to do this?

thnx for reply

Jaipal