DEVICE FOR CONTROLLING RELAY 8E123M WHEN TESTING FOR RELIABILITY Russian patent published in 2018 - IPC G01R31/327 

FIELD: testing equipment.

SUBSTANCE: invention relates to test equipment, in particular to relay monitoring devices, and can be used to monitor electromagnetic relays during testing. Relay monitoring device contains a remote control panel, a voltage feeding cable to the relay coils, the control panel contains voltage switches for the relay coils, a plug-in connector for connecting the voltage supply cable to the relay coils, a shunt, wherein the portable DC power source is configured to apply voltage to the coils of all relays, the stationary DC source is configured to apply voltage to the contacts of all relays, milliammeter is designed to be connected in parallel with the outputs of the toggle switch and in series with the relay coil, the alternating resistance is connected in series with the relay contacts. Control panel is additionally equipped with a batch switch and light bulbs, with one additional circuit connected through each lamella of the batch switch, parallel to the voltage supply to the relay coil, each bulb connected in series with the relay coil.

EFFECT: technical result consists in increasing the accuracy of the current measurement and the reliability of the voltage supply to the relay coils.

1 cl, 4 dwg