Motors

Motors

Industry: Electrical equipment

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Motors

oil mist lubrication-dry sump

Electrical equipment; Motors

A method for lubricating anti-friction bearings which utilizes oil dispersed on an air stream. The mist is exhausted from the bearing housing so as not to permit oil to accumulate.

It is a fundamental principle of a winding that adjacent poles must be wound to give opposite magnetic polarity. This does not mean that the coils actually have to be wound in this direction before ...

medium motors

Electrical equipment; Motors

Motors in NEMA 143T to 449T frames.

oil mist lubrication-wet sump

Electrical equipment; Motors

Similar to Oil Mist Lubrication - Dry Sump, except that a pool of oil is developed in the bearing chamber. This oil pool will continue to supply oil to the bearing in the event that the oil mist is ...

open bearing

Electrical equipment; Motors

A ball bearing that does not have a shield, seal or guard on either of the two sides of the bearing casing.

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.

meggar test

Electrical equipment; Motors

A measure of an insulation system's resistance. This is usually measured in megohms and tested by passing a high voltage at low current through the motor windings and measuring the resistance of the ...