Difference between 460V and 480V regarding...
Difference between 460V and 480V regarding...
(OP)
I have a piece of equipment that says it needs 460Vac, 60Hz, 3-Phase. I have a 480Vac receptacle. What, besides 20 volts differentiates these two? Is 460V and 480V somewhat synonymous? Are they one in the same as far as the motor is concerned or do I need to add a resistor to try and get it down to 460? If anyone could enlighten me it would be a great help. Thanks in advance.





RE: Difference between 460V and 480V regarding...
Motor manufacturers commonly state 460 volts. Industrial power systems are 480-volt nominal, and mine typically deviate a bit on the high side of 480 volts when lightly loaded.
old field guy
RE: Difference between 460V and 480V regarding...
RE: Difference between 460V and 480V regarding...
If you look on the nameplate of a nominal 120V appliance or tool, it is most likely rated at 115 V. Same idea.
You're OK.
RE: Difference between 460V and 480V regarding...
Same with the other voltages, i.e. 220-230-240 or 110-115-120. 240V is DV, 230V is UV, 220V is old. 120V is DV, 115V is UV, 110V is old. Still to this day however, not every utility follows these standards, but the equipment is all made to work withing the ranges anyway.
JRaef.com
Eng-Tips: Help for your job, not for your homework Read FAQ731-376
RE: Difference between 460V and 480V regarding...
RE: Difference between 460V and 480V regarding...
Every motor should have its design voltage tolerance.
For my factory, our incoming voltage to the switchboard is 433V, but we always purchased motor that is 415V +/-10% voltage tolerance.
This is mainly to cater for voltage drop.
RE: Difference between 460V and 480V regarding...
In any event, you are fine. No resistors required!