FIELD: electricity.
SUBSTANCE: medium value of active power is measured, released at resistance of insulation for whole number of periods of test signal, value of which is in inverse proportion of active part of insulation resistance. Device to control resistance of insulation of ramified DC circuits includes unit of sinusoidal voltage generator connected between of one of main buses and body of device connected to earth. Device additionally includes units of connections control, in which signal is generated, proportional to resistance of insulation of this connection relative to earth, multichannel multiplexer, unit of indication to display value of insulation resistance. Multichannel multiplexer alternately transmits signal from units of connections control into unit of controller.
EFFECT: expansion of dynamic range of DC circuit insulation resistance control and increased reliability.
2 cl, 4 dwg
