DEVICE FOR INDUCTIVE WINDING DIAGNOSTICS Russian patent published in 2015 - IPC G01R31/06 

FIELD: electricity.

SUBSTANCE: invention relates to electrical engineering and can be used for pinpointing failed states in induction windings of electrical machines. The invention concept is as follows: the device comprises a three-phase transformer with regulated voltage in the wye-connected secondary winding having three linear conductors, a known good inductive winding coupled by one output with the first linear conductor, a comparison circuit containing a capacitor and resistor with variable resistance values, which may be connected by one of its outputs to the second linear conductor and the second output of the known good winding and an ammeter connected to the third linear conductor. The device is designed for measurements by an ammeter in the circuit of the known good winding with disconnected comparison circuit and tested circuit; it is capable to measure current when the comparison circuit is connected by its one output to the second linear conductor and by its second output to the second output of the known good winding with potential current measurement when the tested winding is coupled in the third linear conductor circuit to the junction unit of the known good winding in series with the ammeter. Operating condition of the tested inductive winding is judged by the current value in the third linear conductor.

EFFECT: expanded operating performances.

2 dwg