The motor nominal voltage rating is good within a +/- 10% voltage range. In other words, a 460 V motor can operate satisfactorily in the range of 414 to 506 volts. By satisfactory operation, I mean the motor will run and start properly within that range. If you apply the same 10% tolerance to a 230 or 240 volt motor, the 277 V service is too high.
Yes, the VFDs that are sold to accept 115V single phase input and provide 230V 3 phase output do indeed have a simple "voltage doubler" circuit on the front-end rectifier. So it rectifies the 115VAC to roughly 162VDC, then uses caps and diodes to boost the DC to 330VDC for the VFD's bus, which then inverts it back into 230VAC for the motor. Power Supply Repair Services. 4. AC Motor Winding Continuity Test. Next, examine the inside of the motor and the wires involved in the three-phase current. Set and calibrate your multimeter for voltage and find the six wires of the three-phase motor. When looking at the box, you should see six wires, three on each side. Can you run 480V motor on a 380V system Have is 480v 60hz 3 phase equipment and moving to a country with 380V 50HZ power supply? Updated: 8/10/2023. Wiki User. ∙ 12y ago. Study now. Ususally the motors can run with 10 % voltage variation, if the motor is 380 V-60 Hz could work proper at 418 Volts-60 Hz, if the motor is feeded with 460 V this will be experiment an over voltage condition, so you most check the load if the motor is not loaded 100 % I think you can do it in 80% load condition. 208V Single Phase and 208V 3 Phase power are easy to use, but hard to understand. If you want a simple understanding but aren’t electrically minded, start with a simple analogy you can build on. I like the bicycle analogy. Bicycle Analogy . A tandem bicycle has two people providing power with four legs (pedals). . 271 410 710 577 58 852 986 836