公开(公告)号：SE0003305D0

公开(公告)日：2000-09-18

申请号：SE0003305

申请日：2000-09-18

Applicant: ABB AB

Inventor： BACKMAN MAGNUS ,  JONSSON LARS ,  LARSSON PER ,  NOLEMO JAN-ANDERS ,  BALGAARD LENNART

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

公开(公告)号：SE0003304D0

公开(公告)日：2000-09-18

申请号：SE0003304

申请日：2000-09-18

Applicant: ABB AB

Inventor： BACKMAN MAGNUS ,  JONSSON LARS ,  LARSSON PER ,  NOLEMO JAN-ANDERS ,  BALGAARD LENNART ,  HALEN STEFAN

IPC: G01R31/327 ,  H01H1/60 ,  H01H9/54 ,  H01H11/00 ,  H01H

公开(公告)号：SE0104202D0

公开(公告)日：2001-12-13

申请号：SE0104202

申请日：2001-12-13

Applicant: ABB AB

Inventor： AL-HOSINI FALAH ,  BALGAARD LENNART ,  KJELLBERG PER

IPC: H02J20060101 ,  H02J

公开(公告)号：SE9904166L

公开(公告)日：2001-05-19

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：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：SE9904166D0

公开(公告)日：1999-11-18

申请号：SE9904166

申请日：1999-11-18

Applicant: ABB AB

Inventor： BACKMAN MAGNUS ,  NYGREN JAN-ANDERS ,  KJAER PHILIP ,  BALGAARD LENNART ,  SMEDE JAN ,  LARSSON PER ,  LILJESTRAND LARS ,  FRANK HARRY ,  ALBERTSSON OVE

IPC: H01H9/54 ,  H01H

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：FI107644B

公开(公告)日：2001-09-14

申请号：FI933714

申请日：1993-08-24

Applicant: ABB AB

Inventor： BALGAARD LENNART

IPC: G01K1/02 ,  G01K13/00 ,  G01R15/07 ,  G08C19/24

Abstract: PCT No. PCT/SE92/00104 Sec. 371 Date Jul. 20, 1993 Sec. 102(e) Date Jul. 20, 1993 PCT Filed Feb. 21, 1992 PCT Pub. No. WO92/14999 PCT Pub. Date Sep. 3, 1992.For temperature measurement at a number of measuring points on, for example, current-carrying bars (2) in a high-voltage switchgear, a data transmitter (1) is used which is arranged near each measuring point and at the same potential as such point. The transmitter is controlled by a temperature sensor (8) and comprises components (3, 4) for capturing drive energy from the electric or the magnetic field around the bar. The temperature sensor (8) may consist of a quartz crystal, the resonance frequency of which has a specified temperature dependence. Measured data is transmitted by means of light (e.g. infrared) in the air to a data receiver (10) at ground potential. The data receiver (10) is able to receive measured data from a plurality of data transmitters.