HYBRID FLUX MOTOR FOR A MEDIUM VOLTAGE CIRCUIT BREAKER

    公开(公告)号:EP3671784A1

    公开(公告)日:2020-06-24

    申请号:EP18214737.1

    申请日:2018-12-20

    申请人: ABB Schweiz AG

    IPC分类号: H01H3/26 H02K26/00 H01F7/14

    摘要: The present invention relates to a hybrid flux motor for a medium voltage circuit breaker. The motor comprises a rotor (2), a stator (1), and a coil (24). The rotor is configured to be fixedly mounted to a main shaft of a circuit breaker of a medium voltage switchgear such that the rotor and main shaft rotate together about a rotation axis. The rotor comprises a central bridge (3) and at least one salient pole (5). The stator is configured to be mounted at least partially around the rotor. The stator comprises at least one salient pole (6). When mounted to the circuit breaker the rotor and stator are configured such that when the at least one salient pole (5) of the rotor faces the at least one salient pole (6) of the stator an air gap separates the salient poles (5, 6). The coil is wound around a part of the motor such that during operation of the motor the coil is configured not to move.

    VOLTAGE MONITORING DEVICE
    3.
    发明公开

    公开(公告)号:EP3859763A1

    公开(公告)日:2021-08-04

    申请号:EP20154631.4

    申请日:2020-01-30

    申请人: ABB Schweiz AG

    IPC分类号: H01H83/12 H02H3/24 H01H71/02

    摘要: A voltage monitoring device comprises input connectors for receiving an input voltage, a linkage (7, 8, 14), a spring (12) for urging the linkage (7, 8, 14) towards a first stable position, and a solenoid (5) powered by the input voltage and adapted to displace the linkage (7, 8, 14) from the first position to a second position if a voltage applied to the solenoid (5) exceeds a first threshold, and to maintain the linkage in the second position while the voltage applied to the solenoid exceeds a second threshold lower than the first threshold. A switch (22) controlled by the linkage (7, 8, 14) is connected to the input connectors and to the solenoid (5) so as apply a first percentage of the input voltage to the solenoid (5) while the linkage (7, 8, 14) is in the first position and to apply a second percentage of the input voltage (Vcc) to the solenoid (5) while the linkage (7, 8, 14) is in the second position, the second percentage being less than the first percentage.