As you will have gathered, maintenance of cage-rotor induction motors tends to mainly involve the stator windings and bearings. Cage-rotors require little or no special care in nor... Read more
Induction motors are fitted with ball and or roller bearings. These bearings are robust and reliable and should give very little trouble provided they are properly fitted, kept abs... Read more
Look at the stator windings for damaged insulation caused by careless replacement of the rotor into the stator. Discoloured insulation is an indication that the winding has been ov... Read more
The maintenance requirements for cage-rotor induction motors are very simple: contact resistance low Keep insulation resistance high and Lubricate correctly and maintain a uniform... Read more
Low power motors for power tools, domestic equipment, refrigerators, vacuum cleaners etc are typically supplied at 220V a.c. 50/60Hz. Common types are: Split-phase induction motor... Read more
Protecting an electric motor basically involves preventing the motor from getting too hot. Remember, every 10*C above the maximum recommended temperature of the insulation can redu... Read more
When motor direct-on-line started with the stator winding star connected, it will only take one-third of the starting current that it would take if the windings were delta connecte... Read more
When the 3-phase a.c. supply voltages are connected to the three stator phase windings, the resulting phase currents produce a multi-pole magnetic flux. This flux is physically rot... Read more
Ship’s Motor Enclosures Enclosure protection for electrical equipment is defined in terms of its opposition to the ingress of solid particles and liquids. The enclosure protection... Read more
The induction motor has two main components, the stator and the rotor. The stator carries three separate insulated phase windings which are spaced 120 degree (electrical) apart and... Read more
