Whois & Analysis for est-aegis.com

Shaft voltage occurs in electric motors and generators due to leakage, induction, or capacitive coupling with the windings of the motor.

It can occur in motors powered by variable-frequency drives, as often used in heating, ventilation, air conditioning and refrigeration systems.

DC machines may have leakage current from the armature windings that energizes the shaft.

Currents due to shaft voltage causes deterioration of motor bearings, but can be prevented with a grounding brush on the shaft, grounding of the motor frame, insulation of the bearing supports, or shielding.

A variable-frequency drive (VFD) (also termed adjustable-frequency drive, variable speed drive, AC drive, micro drive or inverter drive) is a type of adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage.

An electric current is a flow of electric charge.

In electric circuits this charge is often carried by moving electrons in a wire.

It can also be carried by ions in an electrolyte, or by both ions and electrons such as in an ionised gas (plasma).

In electrical engineering, ground or earth is the reference point in an electrical circuit from which voltages are measured, a common return path for electric current, or a direct physical connection to the Earth.

An electric motor is an electrical machine that converts electrical energy into mechanical energy.

The reverse of this is the conversion of mechanical energy into electrical energy and is done by an electric generator.