softground
Member
- Location
- Baltimore, MD
We are currently preparing a piece of underground equipment for a current project. The electrical and other components were refurbished several years ago by an outside shop which has since disolved. Part of the rebuild was to rewind the motors (3 @ 15 hp) for 480 v (the plate still indicates 575 v). A new attachment has increased torque requirements which has caused excessive current draw. However, the increase appears to be greater than anticipated. We now believe that the motors may still be rated at 575 v. Time is critical... is there a relatively simple means of testing the motors to determine optimum (+/-) voltage. Adding a transformer is simple and fast, disassembling and rewinding will take time we don't have.