4 Terms
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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.
magnetic polarity
Electrical equipment; Motors
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 ...
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 ...
