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Speed Measurement and Tachometers in Electric Motors
Knowing how fast an electric motor turns is the foundation of production quality and system safety in most applications. The motor's number of revolutions per minute (rpm) is one o... More Details

What Does the Motor Thermal Protection (TP) Code Mean?
When you look at the nameplate of an electric motor, you encounter many markings such as the insulation class, the protection class, and the efficiency class. Among them there is a... More Details

Magnetic Noise and Slot Harmonics in Electric Motors
Not all of the sound you hear from a running electric motor is mechanical in origin. Alongside bearing friction and fan noise, there is also magnetic noise, which is born in the mo... More Details

Overspeed Capability of Electric Motors
Thanks to frequency inverters, it is possible not only to slow an electric motor down but also to speed it up by going above its rated speed. However, making a motor turn faster is... More Details

Motor Axial End-Float and Bearing Load
The shaft of an electric motor does not just rotate; even if only by a very small amount, it has the freedom to move back and forth along the axis, that is, along the shaft. This m... More Details

Motor Anti-Condensation (Standby) Heaters
While an electric motor is running, the heat it produces keeps condensation from forming inside. The real danger begins when the motor stops: as the machine cools down, the humid s... More Details



