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    AN ARRANGEMENT TO MONITOR DC CIRCUIT CONDITION
    1.
    发明专利
    AN ARRANGEMENT TO MONITOR DC CIRCUIT CONDITION 未知

    公开(公告)号：CA2833827A1

    公开(公告)日：2012-10-26

    申请号：CA2833827

    申请日：2012-04-23

    Applicant: ABB OY

    Inventor： TAKALA MARKO ,  RAJALA MATTI ,  PYLKAS MARKO

    IPC: H02H3/04 ,  G01R31/74 ,  H01H85/32

    Abstract: An arrangement for monitoring condition of a direct current voltage circuit, an arrangement comprising a first and a second supply pole for forming an operating voltage of the direct current circuit, a first fuse (7a) connected to the first supply pole,, which first fuse has a supply pole (7a1 ) and an output pole (7a2). A second fuse (7b) connected to the second supply pole, which second fuse has an input pole (7b1) and an output pole (7b2), means for forming one or several reference voltages (UREFa, UREFb, UREFc) means (3a,...,3h, 3m,...,3t) for forming a first measurement voltage (U1a,U1b,U1c, U1d) between the output pole (7a2) of the first fuse and the supply pole (7b1) of the second fuse, means for forming a second measurement voltage (U1a,U1b,U1c,U1d) between the output pole of the second fuse and the supply pole of the first or the second fuse, means (4a, 4b, 4c) for comparing one or several reference voltages and measurement voltages to estimate the condition of the first and the second fuse, and means (6) for indicating the comparison result.

    4.
    发明专利
    未知

    公开(公告)号：FI20110144A

    公开(公告)日：2012-10-22

    申请号：FI20110144

    申请日：2011-04-21

    Applicant: ABB OY

    Inventor： TAKALA MARKO ,  RAJALA MATTI ,  PYLKAES MARKO

    IPC: H02H3/04 ,  G01R31/74 ,  H01H85/32

    Abstract: An arrangement for monitoring a condition of a direct current voltage circuit including first and second supply poles for forming an operating voltage. A first fuse is connected to the first supply pole, and has a supply pole and an output pole. A second fuse is connected to the second supply pole, and has a supply pole and an output pole. The arrangement can form one or several reference voltages (UREFa,UREFb,UREFc), can form a first measurement voltage (U1a,U1b,U1c,U1d) between the output pole of the first fuse and the supply pole of the second fuse, and can form a second measurement voltage (U1a,U1b,U1c,U1d) between the output pole of the second fuse and the supply pole of the first or the second fuse. One or several reference voltages and measurement voltages can be compared to estimate a condition of the first and second fuse, and a comparison result can be indicated.

    AN ARRANGEMENT TO MONITOR DC CIRCUIT CONDITION
    5.
    发明专利
    AN ARRANGEMENT TO MONITOR DC CIRCUIT CONDITION 未知

    公开(公告)号：CA2833827C

    公开(公告)日：2016-07-05

    申请号：CA2833827

    申请日：2012-04-23

    Applicant: ABB OY

    Inventor： TAKALA MARKO ,  RAJALA MATTI ,  PYLKAS MARKO

    IPC: H02H3/04 ,  G01R31/74 ,  H01H85/32

    Abstract: An arrangement for monitoring condition of a direct current voltage circuit, an arrangement comprising a first and a second supply pole for forming an operating voltage of the direct current circuit, a first fuse (7a) connected to the first supply pole,, which first fuse has a supply pole (7a1 ) and an output pole (7a2). A second fuse (7b) connected to the second supply pole, which second fuse has an input pole (7b1) and an output pole (7b2), means for forming one or several reference voltages (UREFa, UREFb, UREFc) means (3a,...,3h, 3m,...,3t) for forming a first measurement voltage (U1a,U1b,U1c, U1d) between the output pole (7a2) of the first fuse and the supply pole (7b1) of the second fuse, means for forming a second measurement voltage (U1a,U1b,U1c,U1d) between the output pole of the second fuse and the supply pole of the first or the second fuse, means (4a, 4b, 4c) for comparing one or several reference voltages and measurement voltages to estimate the condition of the first and the second fuse, and means (6) for indicating the comparison result.

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