# US 2019/0355533 A1 · Arc Chute With Splitter Plates Interconnected By Resistors > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0355533 A1 - Document ID: US20190355533A1 - Status: Published application - Kind: A1 - Application number: 16/477,107 - Filed: 2017-01-13 - Published: 2019-11-21 - Earliest claimed: 2017-01-13 - Assignees: ABB Schweiz AG - Applicants: ABB Schweiz AG - Inventors: Zichi Zhang; Stefan Valdemarsson - Web page: https://patentgrep.com/patent/US20190355533A1 ## CPC - H01H 9/34: Stationary parts for restricting or subdividing the arc, e.g. barrier plate - H01H 33/08: Stationary parts for restricting or subdividing the arc, e.g. barrier plate - H01H 9/36: Metal parts - H01H 9/42: Impedances connected with contacts - H01H 33/596: {for interrupting DC} - H01H 33/60: Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid - H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00) ## Abstract A switchgear includes a circuit breaking section having a moveable contact bridging element and at least one first arc chutes adjacent the contact bridging element, each arc chute including a base plate for connecting to the contact bridging element and a group of splitter plates placed adjacent the base plate, where the splitter plates of the groups are separated from the base plate and each other via air gaps and resistors interconnect at least some of the plates in at least a first of the arc chutes for bypassing corresponding air gaps, wherein the resistors have values in the range 5 kΩ-1 MΩ, current ratings below 100 mA and power ratings below 1 W. ## Claims ### Claim 1 A switchgear (10) comprising a circuit breaking section having a movable contact bridging element and at least one first arc chute adjacent the contact bridging element, each arc chute including a base plate for connecting to the contact bridging element placed adjacent the base plate, where the splitter plates of the groups are separated from the base plate and each other via air gaps and resistors interconnect at least some of the plates in at least a first of the arc chutes for bypassing corresponding air gaps, wherein all the plates in the first arc chute except for an uppermost splitter plate are interconnected by resistors, which resistors have values in the range 5 kΩ-1 MΩ, current ratings below 100 mA and power ratings below 1 W. ### Claim 2 (depends on 1) The switchgear according to claim 1, wherein the movable contact bridging element is electrically connected to the uppermost splitter plate of the first arc chute. ### Claim 3 (depends on 1) The switchgear according to claim 1, wherein the size of the uppermost splitter plate in the first arc chute is different than the sizes of the other splitter plates in the first arc chute. ### Claim 4 (depends on 1) The switchgear according to claim 1, wherein the air gaps between the splitter plates of the first arc chute except for the air gap between the uppermost splitter plate and its neighbor have the same widths. ### Claim 5 (depends on 1) The switchgear according to claim 1, wherein all the gaps in the first arc chute have the same widths. ### Claim 6 (depends on 1) The switchgear according to claim 1, wherein the splitter plates of the first arc chute are held by a polymer holding structure. ### Claim 7 (depends on 6) The switchgear, according to claim 6, wherein the resistors are realized using conductive polymer traces between splitter plates in the holding structure. ### Claim 8 (depends on 1) The switchgear according to claim 1, further comprising a second arc chute, where the first and second arc chutes are provided on opposite sides of the contact bridging element. ### Claim 9 (depends on 8) The switchgear according to claim 8, wherein the second arc chute has the same realization as the first arc chute. ### Claim 10 (depends on 8) The switchgear according to claim 8, wherein the base plates of the two arc chutes are provided in a common plane and the movable contact bridging element is movable along a first axis perpendicular to the plane of the base plates and the splitter plates of an arc chute are separated from each other along a direction in parallel with the first axis. ### Claim 11 (depends on 1) The switchgear according to claim 1, wherein it is a direct current switchgear and further including a current injecting section configured to cause a zero crossing in the arc of a current through the circuit breaker section that is to be interrupted. ### Claim 12 (depends on 2) The switchgear according to claim 2, wherein the size of the uppermost splitter plate in the first arc chute is different than the sizes of the other splitter plates in the first arc chute. ### Claim 13 (depends on 2) The switchgear according to claim 2, wherein the air gaps between the splitter plates of the first arc chute except for the air gap between the uppermost splitter plate and its neighbor have the same widths. ### Claim 14 (depends on 2) The switchgear according to claim 2, wherein all the gaps in the first arc chute have the same widths. ### Claim 15 (depends on 2) The switchgear according to claim 2, wherein the splitter plates of the first arc chute are held by a polymer holding structure. ### Claim 16 (depends on 2) The switchgear according to claim 2, further comprising a second arc chute, where the first and second arc chutes are provided on opposite sides of the contact bridging element. ### Claim 17 (depends on 9) The switchgear according to claim 9, wherein the base plates of the two arc chutes are provided in a common plane and the movable contact bridging element is movable along a first axis perpendicular to the plane of the base plates and the splitter plates of an arc chute are separated from each other along a direction in parallel with the first axis. ### Claim 18 (depends on 2) The switchgear according to claim 2, wherein it is a direct current switchgear and further including a current injecting section configured to cause a zero crossing in the arc of a current through the circuit breaker section that is to be interrupted.