powerplay
Senior Member
- Location
- In front of a computer.
An Adolph Mohr "Cutter" model Polar 82-ST has a requirement of three phase 550volts 60hz on it's label for a printing shop. The autotransformer that came with it has an output of 575/230volt which are both connected to the equipment from separate cables from either side of the autotransformer winding labelled 575 and 230volt. The place it was hooked up at previously was a typical 208 volt three phase, but the voltage metered at the new location is 249 three phase delta. The Lovett RC 6445 autotransformer has no labelled primary voltage, but an labelled secondary output of 575/230volts....when i applied the 249volts from a disconnect switch the output was 630 volt no load.
Two questions I have (so far) are:
a) Is hooking up an autotransformer meant for 208volts to 240+volts primary damaging the windings badly?
b) Is a decent quality motor requiring 550volts able to handle 600volts no problem? ...can it handle more?
Thanks again!
Two questions I have (so far) are:
a) Is hooking up an autotransformer meant for 208volts to 240+volts primary damaging the windings badly?
b) Is a decent quality motor requiring 550volts able to handle 600volts no problem? ...can it handle more?
Thanks again!