| 摘要 |
PURPOSE:To enable a user to manage the inspection result en block with a centralized controller, performing the execution of the inspection of operation of a plurality of protective relays and a breaker arranged in a power distribution line by the command from the centralized controller. CONSTITUTION:Many protective relays, which receive the inspection command from outside and perform self inspection, and a centralized controller 7, which selectively outputs an inspection command to each protective relay 1, are connected by a transmission path 8 through a transmitter-receiver 21 and 75 that each has, and the protective relay 1 is provided with a current generation source 20 which outputs different inspection currents, and the centralized controller 7 is equipped with a display which indicates the inspection results of the protective relay 1. |
