FIELD: electric engineering.
SUBSTANCE: device for automatic inspection of state of capacitor-type paper-oil isolation of three-phase high-voltage equipment under working voltage has units for connecting to object, commutation and alarm protection units, analog signals processing units, and signalization unit. Units for connecting to object are connected with measuring outputs of phases of object under control. Outputs of units for connecting to object are connected with commutation and alarm units by means of coaxial radio-frequency cables. Outputs of commutation and alarm units are connected with inputs of analog signal processing unit. Digital signal processing unit is connected with outputs of analog signal processing unit. Signalization unit is connected with outputs of digital signal processing unit. False alarm, caused by effect of errors, is excluded and reliability of input circuits of device and of object to be inspected is increased.
EFFECT: improved precision; higher truth of results of measurement.
2 cl, 4 dwg
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