DEVICE FOR MEASUREMENT OF ELECTRICAL INSULATION RESISTANCE Russian patent published in 2009 - IPC G01R27/16 

FIELD: electricity.

SUBSTANCE: invention refers to electrical instrumentation, namely to automated monitoring system of electrical insulation resistance of two-line networks, which are under DC voltage, and may be used during monitoring of insulation of resistance of electric circuits of electro- and radio-technical products. Device for measurement of electrical insulation resistance contains first and second voltage dividers, switch, resistor and series-connected multiplexer, analog-to-digital converter (ADC) and control unit. Outputs of first and second voltage dividers are connected to actions of multiplexer which connects its output signal to ADC input.

EFFECT: due to adding second voltage divider, output of which is connected to case, and measurement of voltage at output of voltage dividers in relation to neutral power bus, significant increase of operational speed is achieved upon measurement of electrical insulation resistance of two-line networks.

1 dwg