Load control system and method for disconnecting sub-bus from main-bus

摘要

Load control system is for disconnecting abnormal sub-bus from main-bus; The load control system has switching circuit (50+51) for connecting the sub-bus (1A, 1B . . . 1N) to the main-bus (2) or disconnecting sub-bus (1A, 1B, . . . 1N) from the main-bus (2) and bus watch device (30A, 30B . . . 30N) for detecting abnormal state of the sub-bus and for operating the switching means to disconnect the abnormal sub-bus from the main-bus (2).