FIELD: electricity.
SUBSTANCE: since voltage supply to the line of the main power supply source a countdown is started, and it is equal to delay time for tripping of network station switch of automatic load transfer. In the line of the main power supply source increase of operating current is monitored, while in the line of the reserve power supply source its decrease is monitored, and these values are defined by reserved load in the line of the main power supply source; when it does not occur then conclusion is made about trip failure of network station switch of automatic load transfer at restoration of normal operation of the ring network.
EFFECT: enlarging functional capabilities of the method.
2 dwg
