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    • 5. 发明申请
    • CIRCUIT INTERRUPTION DEVICE
    • WO2021165119A1
    • 2021-08-26
    • PCT/EP2021/053209
    • 2021-02-10
    • GENERAL ELECTRIC TECHNOLOGY GMBH
    • WHITEHOUSE, RobertADAMCZYK, Andrzej
    • H02H3/08H01H9/54H01H33/59H02H3/02H02H3/05
    • A circuit interruption device (20) comprises: first and second terminals (22, 24) for connection, in use, to a respective electrical circuit or network (34); a current-conductive branch including first, second and third current-conductive branch portions successively connected in series between the first and second terminals (22, 24), the first current-conductive branch portion including a first switching element (36), the second current-conductive branch portion including a second switching element (38), the third current-conductive branch portion including a third switching element (40), each switching element (36,38,40) configured to be switchable to selectively permit and block a flow of current (46) in the respective current-conductive branch portion; first and second current bypass paths (28,30), the first current bypass path (28) connected across the first and second current-conductive branch portions, the second current bypass path (30) connected across the second and third current-conductive branch portions; and a controller (32) configured to selectively control the switching of the switching elements (36, 38, 40) to control a flow of current (46) between the first and second terminals (22, 24) so that: (i) in a first mode of operation of the circuit interruption device (20,120, 220), the current (46) is permitted to flow through the first, second and third current- conductive branch portions and is blocked from flowing through the current bypass paths (28, 30); and (ii) in a second mode of operation of the circuit interruption device (20,120, 220), the current (46) is blocked from flowing through the first and third current-conductive branch portions and is permitted to flow through the current bypass paths (28, 30) so as to reverse a direction of current (46) flowing through the second current-conductive branch portion.