Patent ID: 11870235
Assignee: LS ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 10:
11. The method of claim 8, wherein measuring the power amount of the system power and preventing the system power from being transmitted to the load include:
measuring a system power amount of a power transmission and distribution line or a power system and controlling a cut-off operation of a circuit breaker when a failure occurs in the power transmission and distribution line or the power system;
stopping the relaying operation of the relay unit and the operation of the self power generator when the fail signal is issued; and
changing a voltage level of the driving power input from the self power generator to a preset level and supply the driving power having the preset level to an abnormality sensing unit and a relay controller.