Re: [CAD_CAM_EDM_DRO] Inverters/phase converters

Doug,

I was told by the EMS/ Yaskawa people that a 3 phase drive powered by single phase will work if the output of the unit is derated. You don't want to overheat the 3 phase bridge rectifier. I can't recall what the actual percent value was but I think 20 or 30 % was what they quoted. If you can keep the rectifiers cool, I think you could drive them really hard. Most VFD's come with temp sensors and fans, some don't Perhaps a fan retrofit would help the device live if it came with out one.

One other idea would be to step up voltage to the device so current is lower through the rectifiers? I'm not sure if this would work. Many VFD's will accept 440 volts?

Use this info with caution.

Peter
THRD, Inc.