TRANSFER MECHANISM FOR TRANSFERRING POWER BETWEEN A UTILITY SOURCE AND A STAND-BY GENERATOR

摘要

A transfer mechanism (10) is provided for transferring the supply of power between a generator (44) and utility source (42). The transfer mechanism (10 ) includes a monitoring system (188) for monitoring the power supplied by the utility source (42). The monitoring system (188) starts the generator (44) i n response to a power outage from the utility source (42) and stops the generator (44) in response to the restoration of power from the utility sour ce (42). A power relay (77, 79, 92) has a utility input (70, 72, 74, 78, 88, 90 ) connectable to the utility source (42), a generator input (124, 126, 132, 13 4, 140, 142) connectable to the generator (44), an output (162, 164, 170, 172, 178, 180) connectable to a load, and a movable contact (190, 192, 194, 196, 198, 200) for selectively interconnecting one of the inputs (124, 126, 132, 134, 140, 142) to the output (162, 164, 170, 172, 178, 180) in response to t he generation of power by the generator (42).