公开(公告)号：DE69913538D1

公开(公告)日：2004-01-22

申请号：DE69913538

申请日：1999-12-23

Applicant: ABB AB VAESTERAAS

Inventor： JONSSON LARS ,  MEYER KLAUS

IPC: B21B1/22 ,  B21B37/28

公开(公告)号：AT255964T

公开(公告)日：2003-12-15

申请号：AT99204509

申请日：1999-12-23

Applicant: ABB AB

Inventor： JONSSON LARS ,  MEYER KLAUS

IPC: B21B1/22 ,  B21B37/28

公开(公告)号：SE517814C2

公开(公告)日：2002-07-16

申请号：SE9904166

申请日：1999-11-18

Applicant: ABB AB

Inventor： BACKMAN MAGNUS ,  NYGREN NOLEMO JAN-ANDERS ,  KJAER PHILIP ,  BALGAARD LENNART ,  SMEDE JAN ,  LARSSON PER ,  ALBERTSSON OVE ,  JOHANSSON JAN ,  FALAH AL-HOSINI ,  JONSSON LARS

IPC: H01H9/54

Abstract: An electric switching device for alternating current comprises two branches ( 2, 3 ) connected in parallel in a current path and having each at least two contact members ( 4-7 ) connected in series. A semiconductor device ( 8 ) is adapted to interconnect the midpoints between the two contact members of each branch. When opening the current path a first contact member ( 5 ) of one, first branch located before said midpoint as seen in the current direction existing is controlled to open and a second contact member ( 6 ) of the second branch located after the midpoint as seen in the current direction is controlled to open for transferring the current to a temporary current path through the semiconductor device. The current path through the switching device is then broken when the semiconductor device is in a blocking state by opening a contact member ( 4, 7 ) of the switching device arranged in the temporary current path.

公开(公告)号：AU6447701A

公开(公告)日：2001-12-17

申请号：AU6447701

申请日：2001-06-07

Applicant: ABB AB

Inventor： LARSSON PER ,  BACKMAN MAGNUS ,  JONSSON LARS

IPC: H01H33/59 ,  H01H9/56 ,  H01H33/00

Abstract: An apparatus ( 14 ) for detecting a zero-crossing of an alternating current after occurrence of a fault in a current path ( 2 ) for determining a suitable time for opening an electric switching device ( 2 ) arranged in the current path for breaking the current in the current path comprises members ( 15 ) adapted to detect the current in the current path. An arrangement ( 19 ) is adapted to calculate the dc-level of the current and the decay of the dc-level with time on the basis of values of the alternating current detected and also predict the time for a future zero-crossing of the alternating current on the basis of at least current values obtained through said current detection, the dc-level calculated, the dc-decay calculated and information about the period time of the alternating current.

公开(公告)号：SE9904165L

公开(公告)日：2001-05-19

申请号：SE9904165

申请日：1999-11-18

Applicant: ABB AB

Inventor： AL-HOSINI FALAH ,  BACKMAN MAGNUS ,  JONSSON LARS ,  LARSSON PER ,  LILJESTRAND LARS ,  FRANK HARRY

IPC: H01H9/54

公开(公告)号：SE9904164L

公开(公告)日：2001-05-19

申请号：SE9904164

申请日：1999-11-18

Applicant: ABB AB

Inventor： AL-HOSINI FALAH ,  BACKMAN MAGNUS ,  JONSSON LARS ,  LARSSON PER

IPC: H01H9/42 ,  H01H9/54 ,  H01H9/56

公开(公告)号：SE0002126D0

公开(公告)日：2000-06-07

申请号：SE0002126

申请日：2000-06-07

Applicant: ABB AB

Inventor： LARSSON PER ,  BACKMAN MAGNUS ,  JONSSON LARS

IPC: H01H33/59 ,  H01H9/54 ,  H01H9/56 ,  H01H33/00 ,  H01H

Abstract: An apparatus for controlling an electric switching device (1) for alternating current arranged in a current path for opening the switching device and for breaking the current in the current path after occurrence of a fault current comprises members (15) adapted to detect the current in the current path and a unit (20) adapted to control the electric switching device to break the current in the current path directly after a half wave of the alternating current having a peak value below a predetermined current limit value, so that the breaking is completed through a zero-crossing of the alternating current terminating a said half wave.

公开(公告)号：DE60140280D1

公开(公告)日：2009-12-03

申请号：DE60140280

申请日：2001-06-07

Applicant: ABB AB

Inventor： LARSSON PER ,  BACKMAN MAGNUS ,  JONSSON LARS

IPC: H01H9/54 ,  H01H33/59 ,  H01H9/56 ,  H01H33/00

Abstract: An apparatus for controlling an electric switching device (1) for alternating current arranged in a current path for opening the switching device and for breaking the current in the current path after occurrence of a fault current comprises members (15) adapted to detect the current in the current path and a unit (20) adapted to control the electric switching device to break the current in the current path directly after a half wave of the alternating current having a peak value below a predetermined current limit value, so that the breaking is completed through a zero-crossing of the alternating current terminating a said half wave.

公开(公告)号：AT446587T

公开(公告)日：2009-11-15

申请号：AT08101936

申请日：2001-06-07

Applicant: ABB AB

Inventor： LARSSON PER ,  BACKMAN MAGNUS ,  JONSSON LARS

IPC: H01H9/54 ,  H01H33/59 ,  H01H9/56 ,  H01H33/00

Abstract: An apparatus for controlling an electric switching device (1) for alternating current arranged in a current path for opening the switching device and for breaking the current in the current path after occurrence of a fault current comprises members (15) adapted to detect the current in the current path and a unit (20) adapted to control the electric switching device to break the current in the current path directly after a half wave of the alternating current having a peak value below a predetermined current limit value, so that the breaking is completed through a zero-crossing of the alternating current terminating a said half wave.

公开(公告)号：SE0601457L

公开(公告)日：2007-12-31

申请号：SE0601457

申请日：2006-06-30

Applicant: ABB AB

Inventor： JONSSON LARS