公开(公告)号：EP3023998B1

公开(公告)日：2018-05-02

申请号：EP14194288.8

申请日：2014-11-21

Applicant: ABB Schweiz AG

Inventor： Doser, Bernhard ,  Dubach, Peter ,  Greuter, Felix ,  Lindell, Elisabeth ,  Liljestrand, Lars

IPC: H01C7/12

CPC classification number: H01C7/12 ,  H01C1/02

Abstract: A multi-terminal surge arrester (10) is proposed, which comprises an active part (12) extending along a longitudinal direction (14) of the surge arrester (10), a first electrode (20) resting against a first end (18) of the active part (12), and a second electrode (24) resting against a second end (22) of the active part (12), which second end (22) opposes the first end (18) in the longitudinal direction (14) of the surge arrester (10). The surge arrester (10) further comprises an insulating fixing device (26) mechanically connecting and fixing the first electrode (20) and the second electrode (24), and an insulating housing (38) arranged around the active part (12). The active part (12) comprises at least two metal-oxide based varistor elements (34) and a further electrode (40, 40a, 40b) arranged between the at least two varistor elements (34), which further electrode (40, 40a, 40b) provides an externally accessible electrical connection. Therein, the surge arrester (10) is adapted for being insulated by surrounding air.

公开(公告)号：EP2511927B1

公开(公告)日：2018-08-29

申请号：EP11161921.9

申请日：2011-04-11

Applicant: ABB Schweiz AG

Inventor： Liljestrand, Lars ,  Jonsson, Lars E ,  Skarby, Per ,  Lindholm, Per ,  Steiger, Ueli

IPC: H01H33/14

CPC classification number: H01H33/22 ,  H01H1/50 ,  H01H33/14 ,  H01H33/64 ,  H01H33/68 ,  H01H2033/028 ,  H01H2033/566

Abstract: A medium or high voltage switch (27) has a first set of contact elements (13a, 13b, 13c) and a second set of contact elements (14a, 14b, 14c). Each contact element (13a, 13b, 13c; 14a, 14b, 14c) consists of an insulating carrier (15) carrying conducting elements (16). In the closed state of the switch (27), the conducting elements (16) align to form one or more current paths (34) between terminals (8, 9) of the switch (27) along an axial direction (A). For opening the switch (27), the contact elements are mutually displaced by means of one or two drives (18, 19) along a direction (D) perpendicular to the axial direction (A). The switching arrangement (12) is arranged in a fluid-tight housing (1) in a gas of elevated pressure or in a liquid. The switch (27) has a high voltage withstand capability and fast switching times.

公开(公告)号：EP2523204B1

公开(公告)日：2019-09-04

申请号：EP12167569.8

申请日：2012-05-10

Applicant: ABB Schweiz AG

Inventor： Panousis, Emmanouil ,  Kostovic, Jadran ,  Liljestrand, Lars ,  Bujotzek, Markus ,  Skarby, Per

IPC: H01H33/59 ,  H01H33/75

公开(公告)号：EP3893344A1

公开(公告)日：2021-10-13

申请号：EP20168198.8

申请日：2020-04-06

Applicant: ABB Schweiz AG

Inventor： Backman, Magnus ,  Eriksson, Thomas ,  Liljestrand, Lars ,  Bengtsson, Tord

IPC: H02H3/08 ,  H02J3/00

Abstract: The present invention relates to a method for fault level monitoring in an electrical power system electrically connectable to a capacitor bank, the method comprising: causing (S102) a switching operation for electrically connecting the capacitor bank to the electric power system, measuring (S104) an electric characteristic caused by the switching operation at the capacitor bank, and determining (S106) a fault level in the electric power system based on the electric characteristic.

公开(公告)号：EP2511928B1

公开(公告)日：2018-10-03

申请号：EP11161924.3

申请日：2011-04-11

Applicant: ABB Schweiz AG

Inventor： Liljestrand, Lars ,  Jonsson, Lars E ,  Skarby, Per ,  Chladny, Ryan

IPC: H01H33/14

CPC classification number: H01H1/226 ,  H01H1/365 ,  H01H33/14 ,  H01H33/38 ,  H01H50/323 ,  H01H2033/028

Abstract: A medium or high voltage switch (27) has a first set of contact elements (13a, 13b, 13c) and a second set of contact elements (14a, 14b, 14c). Each contact element consists of an insulating carrier (15) carrying conducting elements (16). In the closed current-carrying state of the switch, the conducting elements (16) align to form one or more current paths (34) between terminals (8, 9) of the switch (27) along an axial direction (A). For opening the switch (27), the contact elements (13a, 13b, 13c; 14a, 14b, 14c) are mutually displaced by means of two drives (18, 19) along a direction (D) perpendicular to the axial direction (A). The switching arrangement is arranged in a fluid-tight housing (1) in a gas of elevated pressure or in a liquid. The switch (27) has a high voltage withstand capability and fast switching times.

公开(公告)号：EP2511929B1

公开(公告)日：2017-12-13

申请号：EP12161631.2

申请日：2012-03-28

Applicant: ABB Schweiz AG

Inventor： Liljestrand, Lars ,  Jonsson, Lars E ,  Skarby, Per ,  Lindholm, Per ,  Steiger, Ueli

IPC: H01H33/14 ,  H01H33/22 ,  H01H1/50

CPC classification number: H01H33/22 ,  H01H1/50 ,  H01H33/14 ,  H01H33/64 ,  H01H33/68 ,  H01H2033/028 ,  H01H2033/566

Abstract: A medium or high voltage switch (27) has a first set of contact elements (13a, 13b, 13c) and a second set of contact elements (14a, 14b, 14c). Each contact element (13a, 13b, 13c; 14a, 14b, 14c) consists of an insulating carrier (15) carrying conducting elements (16). In the closed state of the switch (27), the conducting elements (16) align to form one or more current paths (34) between terminals (8, 9) of the switch (27) along an axial direction (A). For opening the switch (27), the contact elements are mutually displaced by means of one or two drives (18, 19) along a direction (D) perpendicular to the axial direction (A). The switching arrangement (12) is arranged in a fluid-tight housing (1) in a gas of elevated pressure or in a liquid. The switch (27) has a high voltage withstand capability and fast switching times.