Background: The article describes a device for simulating defects for use with acoustic control systems for high-voltage transformers. Aim: experimental research of a mobile device for imitation of power transformer defects; determine the parameters of impulses simulating various insulation defects Methods: development of technical means for imitation of insulation defects; experimental research; determination of parameters of signals simulating defects. Results: a block diagram of a device for imitating defects is shown; experimental studies of the device for imitating defects were carried out; the power of pulses simulating various defects in the insulation of high-voltage transformers was calculated. Conclusion: The proposed device generates high-voltage pulses that simulate various defects in the insulation of high-voltage transformers. The parameters of acoustic signals are given.

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Background: The article describes a device for simulating various insulation defects for use with acoustic control devices for power transformers included in the power supply system of railway transport. The parameters of the recorded signals of the simulator are given, which will make it possible to recognize various insulation defects when diagnosing power transformers under operating conditions which will help to avoid emergency modes and interruptions in the operation of the electric rolling stock of railways. Aim: experimental studies of a simulator with a different set of defects, obtaining the values of the parameters of acoustic control signals for various defects in the insulation of power transformers. Methods: experimental studies of automated means of acoustic control, development of technical means for simulating various defects in the insulation of power transformers, processing of acoustic control signals. Results: the block diagram of the simulator with a different set of defects is given, the values of the parameters of acoustic monitoring signals for various defects in the insulation of power transformers are given. Conclusion: the above device allows you to reproduce various defects in the insulation of power transformers, to recognize such defects according to the proposed parameters of acoustic control signals.

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