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
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