METHOD FOR MEASURING RESISTANCE OF CONNECTIONS ISOLATION IN BRANCHED NETWORKS OF DIRECT AND ALTERNATING CURRENT, AND DEVICE FOR ITS REALIZATION Russian patent published in 2006 - IPC G01R27/18 G01R31/02 

FIELD: measuring equipment engineering.

SUBSTANCE: method includes applying controlling alternating voltage to network having given frequency, different from frequency of network. Current in controlled connection is measured, taken signal is filtered and synchronous detection of signal is performed for determining leak current. Particularity of method is, that calibrating resistive-capacity impedance is connected to controlled connection, and leak current is measured again with connected impedance. On basis of results of measurements of leak current non-stationary value of transition coefficient of measuring route and value of resistance of isolation of controlled connection are determined.

EFFECT: prevented influence of non-stationary character of parameters of current indicator and measuring route, to allow increased precision of measuring resistance of connection isolation and reliability of identification of network portion with decreased insulation resistance.

2 cl, 2 dwg