METHOD FOR MEASUREMENT AND CONTROL OF EQUIVALENT INSULATION RESISTANCE OF UNEARTHED POWER ELECTRIC DIRECT-CURRENT MAINS, INCLUDING ELECTROMOTOR NETWORKS WITH VOLTAGE STATIC CONVERTERS AND RELATED DEVICE FOR IMPLEMENTATION THEREOF

摘要

FIELD: electricity.;SUBSTANCE: one pole of controlled mains is bridged with a resistor, and a bypass is modified so that to reduce voltage to earth of this bypass pole precisely by half as compared with voltage to earth of this pole before bridging, and a device comprises a comparator, a power amplifier, a relay with a switching contact block, a second analogue signal reading and storage device, an ohmmetre, a keyed decoding resistor array (DRA) and new element communications have ensured a new uncomplicated high-accuracy and high-reliability measurement and control device.;EFFECT: higher reliability of measurement and control of insulation resistance of a controlled electric direct-current mains.;2 cl, 1 dwg