Patent ID: 11892509
Assignee: LS ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 1:
2. The device of claim 1, wherein the inspection processor is configured to:
select one of the at least one enabled relay element as the inspection target relay element, based on the inspection sequence of the inspection plan information;
transmit an inspection setting providing signal including information about the inspection target relay element to the protective relay via the connector;
deliver an inspection target signal corresponding to the inspection target relay element to the protective relay via the connector; and
detect a normal or abnormal state of the inspection target relay element based on a receiving timing of a trip control signal from the protective relay via the connector and the trip critical period of the inspection plan information,
wherein the protective relay is configured to:
create inspection setting information, wherein the inspection setting information maintains one designated as the inspection target relay element among the at least one enabled relay element from the relay setting information in an enabled state, based on the inspection setting providing signal and changes a remaining enabled relay element to a disabled state; and
execute the relay function on the inspection target signal transmitted from the protective relay inspection device based on the inspection setting information, and deliver a trip control signal based on the execution of the relay function to the protective relay inspection device.