Choosing a Motor by Speed: 750–3000 RPM Guide
Choosing an electric motor by rotation speed: 2-pole (3000), 4-pole (1500), 6-pole (1000), 8-pole (750 rpm). T...
Articles
Useful articles, reviews and technical solutions
Running a Motor with a VFD: Practical Considerations
Running an electric motor with a VFD: overheating at low speed, bearing currents, dU/dt voltage spikes. Soluti...
Single-Phase vs Three-Phase Motor — When to Pick Which
Single-phase (220 V) vs three-phase (380 V) electric motors compared: efficiency, power, starting torque, reli...
Electric Motor Protection: Devices and Schemes
Electric motor protection against overload, short circuit, phase loss, overheating: circuit breakers, thermal...
How to Choose an Electric Motor for a Fan
How to choose an electric motor for a fan: load type, speed for axial and centrifugal fans, power table, VFD s...
How to Choose an Electric Motor for a Compressor
How to choose an electric motor for a compressor: 15–25% power margin, 1500 rpm for reciprocating compressors,...
AIR Electric Motors: Series, Power Ratings, Selection
AIR electric motors are a series of asynchronous three-phase motors rated from 0.18 to 315 kW, built to the In...
Hybrid Inverter for Business: From Retail to Manufacturing
A hybrid inverter for business pays for itself in 2-4 years — faster than for homes. This article covers which...
