Motors

Motors

Industry: Electrical equipment

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Motors

Open externally-ventilated machine

Electrical equipment; Motors

A machine which is ventilated with external air by means of a separate motor-driven blower mounted on machine enclosure.

An open machine except that openings for admission of ventilating air are so arranged that inlet ducts or pipes can be connected to them. Air may be circulated by means integral with machine or by ...

Open (protected) motor

Electrical equipment; Motors

A motor having ventilating openings which permit passage of external cooling air over and around the windings. The term "open machine", when applied to large apparatus without qualification, ...

Positive lubrication system (PLS)

Electrical equipment; Motors

An exclusive Reliance bearing and lubricating system which permits complete lubrication of the bearing whether the motor is mounted vertically or horizontally. This system also helps prevent over ...

Paralleling

Electrical equipment; Motors

When two or more DC motors are required to operate in parallel - that is, to drive a common load while sharing the load equally among all motors - they should have speed-torque characteristics which ...

Part winding start motor

Electrical equipment; Motors

Is arranged for starting by first energising part of the primary winding and subsequently energising the remainder of this winding in one or more steps. The purpose is to reduce the initial value of ...

Permanent magnet synchronous (PMR)

Electrical equipment; Motors

A motor with magnets embedded into the rotor assembly, which enable the rotor to align itself with the rotating magnetic field of the stator. These motors have zero slip (constant speed with load) ...