Motor and VFD Calculator
Synchronous speed, slip, full-load current and V/Hz for 50 Hz and 60 Hz motors.
Free. No sign-up. Runs entirely in your browser, so nothing you type is uploaded or stored.
Synchronous speed
1,500 rpm
Slip
2.67 %
Full-load current (approx.)
14.2 A
Rated torque
49.1 N·m
V/Hz ratio
8 V/Hz
At 40 Hz: about 1,168 rpm, and a constant-V/Hz drive applies about 320 V. Above base frequency the voltage stays at rated and torque falls.
Estimates from the standard formulas. The nameplate full-load current is the figure to use for protection and cable sizing, which must follow your local electrical code.
How to use it
- 1Pick your grid frequency: 50 Hz in most of the world, 60 Hz in the Americas and parts of Asia.
- 2Copy power, voltage, speed, power factor and efficiency from the nameplate.
- 3Check the calculated current against the nameplate; use the nameplate for protection.
- 4Try a drive frequency to see the speed and voltage it gives.
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The AEP trains you on 20 PLC brands inside a working automation company in Electronic City, Bangalore, with placement support after you complete. Job guarantee (conditions apply). It runs for the six months after you complete the programme. See the placement policy.