公开(公告)号：EP3901975A1

公开(公告)日：2021-10-27

申请号：EP20171370.8

申请日：2020-04-24

Applicant: ABB Schweiz AG

Inventor： Babou, Yacine ,  Ranjan, Nitesh ,  Lantz, Gabriel ,  Abplanalp, Markus ,  Rager, Felix Theodor Erich

IPC: H01H1/42 ,  H01H1/54 ,  H01H77/10 ,  H01H9/34

Abstract: A contact assembly (105) for a load break switch (100) including:
a stationary contact unit (110); and
a movable contact unit (120) configured to move between a closed position and an open position, wherein
an electric current i) flowing along a current path (140) through the stationary contact unit (110) and the movable contact unit (120) and ii) including an electric arc (142) between the stationary contact unit (110) and the movable contact unit (120) is adapted to generate a magnetic field enabling a Lorentz force (144) to act on the electric arc (142), wherein
iii) a structure (122) of the movable contact unit (120) is adapted to form the current path (140) or iv) a structure (112) of the stationary contact unit (110) and a structure (122) of the movable contact unit (120) are adapted to form the current path (140), such that in both cases iii), iv) the Lorentz force (144) enlarges a path of the electric arc (142), to facilitate quenching or extinguishing the electric arc (142), and
in the closed position, the structure (122,112) is configured to allow the current flowing through the movable contact unit (120) and the stationary contact unit (110) to flow along a current path (140) that is unaffected by the structure (122,112).

公开(公告)号：EP3910658A1

公开(公告)日：2021-11-17

申请号：EP20174638.5

申请日：2020-05-14

Applicant: ABB Schweiz AG

Inventor： Ranjan, Nitesh ,  Babou, Yacine ,  Carstensen, Jan ,  Rager, Felix ,  Lantz, Gabriel ,  Abplanalp, Markus

IPC: H01H9/36 ,  H01H33/10

Abstract: A switching apparatus for electric power distribution grids comprising:
- one or more electric poles;
- for each electric pole, at least a fixed contact and a movable contact. The movable contact is reversibly movable between a coupled position, at which said movable contact is coupled with said fixed contact, and an uncoupled position, at which said movable contact is separated from said fixed contact;
- for each electric pole, an arc-breaking assembly comprising an arc-chute arrangement including a plurality of arc-breaking plates. Said arc-breaking plates are electrically disconnected from said fixed contact, said movable contact and other live parts of said electric pole, so that they normally are at a floating voltage potential.
The arc breaking assembly comprises at least an electronic circuit including semiconductor switches, which has a first terminal electrically connected with at least an arc-breaking plate and a second terminal electrically connected with at least another arc-breaking plate.

公开(公告)号：EP3910657A1

公开(公告)日：2021-11-17

申请号：EP20174616.1

申请日：2020-05-14

Applicant: ABB Schweiz AG

Inventor： Ranjan, Nitesh ,  Babou, Yacine ,  Rager, Felix ,  Lantz, Gabriel ,  Abplanalp, Markus

IPC: H01H9/36 ,  H01H33/10

Abstract: A switching apparatus for electric power distribution grids comprising:
- one or more electric poles;
- for each electric pole, at least a fixed contact and a movable contact. The movable contact is reversibly movable between a coupled position, at which said movable contact is coupled with said fixed contact, and an uncoupled position, at which said movable contact is separated from said fixed contact;
- for each electric pole, an arc-breaking assembly comprising an arc-chute arrangement including a plurality of arc-breaking plates. Said arc-breaking plates are electrically disconnected from said fixed contact, said movable contact and other live parts of said electric pole, so that they normally are at a floating voltage potential.
The arc-breaking plates comprise a first portion made of a ferromagnetic material and a second portion made of a non-ferromagnetic material.

公开(公告)号：EP3905292A1

公开(公告)日：2021-11-03

申请号：EP20171892.1

申请日：2020-04-28

Applicant: ABB Schweiz AG

Inventor： Ranjan, Nitesh ,  Lantz, Gabriel ,  Abplanalp, Markus ,  Rager, Felix Theodor Erich ,  Babou, Yacine

IPC: H01H33/10

Abstract: A medium voltage gas insulated switch (100) comprising a first electric contact (102); and a second electric contact (104) that is moveable with respect to the first electric contact and a plurality (200) of splitter plates (200-1, 200-2, ...) configured to interrupt an electric arc (110) between the first electric contact (102) and the second electric contact (104) during the switching operation of the switch; a splitter plate holder (510) that holds the plurality of splitter plates; some of which are ferromagnetic; exterior side walls (500) of the splitter plate holder (510); wherein the splitter plate holder electrically insulates different splitter plates in the plurality of splitter plates; and wherein the exterior side walls (500) of the splitter plate holder (510) are configured to block a flow of gas perpendicular to the side walls and to prevent a bridging of the electric arc (110) around splitter plates (200-1, 200-2, ...) in the plurality (200) of splitter plates;and wherein the exterior side walls (500) are further configured to facilitate an evacuation of a hot gas by directing a flow of the hot gas in a direction parallel to the exterior side walls.

公开(公告)号：EP3905291A1

公开(公告)日：2021-11-03

申请号：EP20171867.3

申请日：2020-04-28

Applicant: ABB Schweiz AG

Inventor： Ranjan, Nitesh ,  Babou, Yacine ,  Lantz, Gabriel ,  Abplanalp, Markus ,  Rager, Felix Theodor Erich ,  Carstensen, Jan

IPC: H01H33/10

Abstract: A medium voltage gas insulated switch (100) comprising a first electric contact (102); and a second electric contact (104) that is moveable with respect to the first electric contact and a plurality (200) of splitter plates (200-1, 200-2, ...) configured to interrupt an electric arc (110) between the first electric contact (102) and the second electric contact (104) during the switching operation of the switch; a splitter plate holder (300, 510) that holds the plurality of splitter plates; and wherein at least a part of the plurality (200) of splitter plates is arranged in a non-parallel manner to each other and at substantially the same distance from a trajectory of the moveable second electric contact.