DEVICE FOR DETECTION OF INTERTURN LOCKING IN THE WINDINGS OF THE STATORS OF ELECTRICAL ENGINES Russian patent published in 2007 - IPC G01R31/06 

FIELD: the proposed invention refers to the field of electro-measuring technique and may be used at controlling of the windings of the stators of electrical engines on interturn locking.

SUBSTANCE: device for detection of an interturn locking in the windings of the stators of electrical engines has a voltage divisor of in-series connected the first and the second resistors, a measuring circuit of in-series connected the third resistor and a supporting inductor inductively connected with the object of control, a differential amplifier whose inverting input is connected with the middle output of the voltage divisor and the output with the input of an integrator, whose output is connected with the first outputs of the voltage divisor and the measuring circuit , the last output of the last is connected with the common bus and the middle-with the noninverting input of the differential amplifier. Besides this arrangement has additionally a rectifier, a comparison scheme, a source of supporting voltage, an indicator, in-series connected a controlling inductor and physically placed on one magnetic conductor with the inductor and a electrical button with normally dead contacts. At that the second output of the voltage divisor is connected directly with the output of the differential amplifier and through the rectifier with the first input of the comparison scheme, whose second input is connected with the output of the source of supporting voltage and the output with the indicator.

EFFECT: increases sensitiveness of the measuring converter of the device and reliability of the controlling result.

2 dwg