Asynchronous squirrel cage and troubleshooting procedure for said motor.

摘要

The invention relates to a method of detecting damage to the rods and / or rings short jaularotórica asynchronous motors squirrel cage, regardless of the type of load that are working, pudiéndosedetectar such breakdowns even when the engine is locking loads whose opposing torque has an oscillating or pulsating component. The broken bars produced a significant alteration in the length covered by each pole over the air gap of the machine, and this alteration is the parameter which is taken as an indicator for detecting the failure. These variations in the length of the magnetic poles are detected by measuring the flux concatenated by one of the stator teeth (4), thanks to an auxiliary winding (5) disposed in said stator tooth (4). The invention also relates to a squirrel cage asíncronode engine, incorporating an auxiliary winding (5) to detect damage to the rods and / or the short anillosde rhetorical cage under any load.