So you would use a 230/460 dual voltage motor, wired in the 230V configuration but connected to a 480V VFD. By its nature, a VFD must be able to produce a lower voltage than its input. So a 480V VFD can be set to a V/Hz ratio to properly operate a 230V motor.

Jraef. Motors work properly by the application of a specific V/Hz ratio; 415V 50Hz is a ratio of 8.3V/Hz. But there is a tolerance of +-10% on the voltage to cover 380V systems, so typically they consider the design voltage tolerance to include 400V systems, making the acceptable V/Hz ratio 8.0 V/Hz. If you apply 480V 60Hz to it, the ratio is 8

480-volt vs. 208-volt Service Question. It is not necessary that a commercial building have a 480-volt service. The decision for using either a 208-volt or 480-volt service should be based on the size and the nature of the loads. The buildings in question are not of a size or type which would lead us to think that a 480-volt service is necessary.

You can use it, but there are two ways to use it 1. When the motor operating frequency is less than: 50 380/480 = 39.6hz, the motor can meet the constant torque operation. At this time, even though the power supply is low, the constant flux of the motor can be maintained by changing the frequency year on year, so the maximum torque is not lost 2.

Running a 380V 50Hz motor @ 460V 60HzLink to notes:

What is the minimum voltage you may have today and what is the minimum voltage you may have tomorrow. If the tolerance of the supply in your new location is -10% you have to check that your production line can withstand temporary operation at 340Vac LL 200Vac LN. But may be your existing system is 400Vac -10% and the future 380Vac – 5% …

However, when you use it at a higher voltage than it was designed for, the motor windings saturate and the motor consumes more energy as heat, so the current is higher at the higher voltages. For 60Hz applications, the V/Hz ratio of the design, 380/50, is 7.6:1, which is almost exactly the same as 460V 60Hz, so the motor is fine with 460V 60Hz
\n \n\n \n can you run a 380v motor on 480v
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    • can you run a 380v motor on 480v