Electrical Frequency Converter (50Hz / 60Hz)

Convert electrical frequency and estimate motor speed changes.
Use this frequency converter to convert 50Hz and 60Hz electrical systems and estimate motor speed changes when operating equipment under different grid frequencies.
Motor & System Parameters
Equipment Nameplate (Original Design)
V

Target Network (New Location)
V

Operational Speed

Synchronous RPM
Target Speed
1800 RPM
Speed will increase by 20%
Original Design Speed
1500 RPM
As stated on nameplate

Magnetic Flux (V/Hz)

Torque Indicator
Target V/Hz Ratio
8.00
Available magnetic flux
Original V/Hz Ratio
8.00
Required for rated torque

Optimal Conversion

The V/Hz ratio remains identical. The motor will deliver its rated torque safely at the new speed.

Engineering Reference
Synchronous Speed
RPM = 120 × f / p
Magnetic Flux
Flux ≈ V / f
  • f = Frequency (Hz)
  • p = Number of Poles
  • V/Hz = Maintaining this ratio constant ensures constant motor torque capabilities without overheating.