Motors

Motors

Contributors in Motors

Motors

The introduction of resistance in series with the shunt wound field of a DC motor to reduce the voltage and current which weakens the strength of the magnetic field and thereby increases the motor ...

Base speed

Electrical equipment; Motors

The speed which a DC motor develops at rated armature and field voltage with rated load applied.

Flange

Electrical equipment; Motors

Mounting endshield with special rabbets and bolt holes for mounting such equipment as pumps and gear boxes to the motor or for overhanging the motor on the driven machine.

Bearings

Electrical equipment; Motors

Are used to reduce friction and wear while supporting rotating elements. For a motor it must provide a relatively rigid support for the output shaft. The bearing acts as the connexion point between ...

Flux

Electrical equipment; Motors

The magnetic field which is established around an energised conductor or permanent magnet. The field is represented by flux lines creating a flux pattern between opposite poles. The density of the ...

Bearing life

Electrical equipment; Motors

Rating life, L10 (Bl0), is the life in hours or revolutions in which 90% of the bearings selected will obtain or exceed. Median life (average life), L50(B50)

Form factor

Electrical equipment; Motors

A figure of merit which indicates how much rectified current departs from pure (non-pulsating) DC. A large departure from unity form factor (pure DC, expressed as 1.0) increases the heating effect of ...