| 摘要 |
An electrical contactor (10) comprises a first terminal (12) having a fixed member (30) with at least one fixed electrical contact (32), a second terminal (14), and at least one movable electrical contact (50) in electrical communication with the second terminal (14). A dual-coil actuator (64) is also provided and has a first drive coil (80) drivable to open and close the movable and fixed electrical contacts, and a second non-drive coil (82) feedback connected to induce a reverse flux to temper and stabilise a nett flux. Control of a delay time of the opening and closing electrical contacts is thus possible, so as to be at or adjacent to a subsequent or next zero-crossing of an associated AC load current waveform. A method of controlling electrical contact closing and opening delay, and a method of limiting or preventing electrical contact bounce and arc duration are also provided. |
