EP3483913A1 - Leitfähige schleife eines schutzschalters - Google Patents

Leitfähige schleife eines schutzschalters Download PDF

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Publication number
EP3483913A1
EP3483913A1 EP17823582.6A EP17823582A EP3483913A1 EP 3483913 A1 EP3483913 A1 EP 3483913A1 EP 17823582 A EP17823582 A EP 17823582A EP 3483913 A1 EP3483913 A1 EP 3483913A1
Authority
EP
European Patent Office
Prior art keywords
contact
moving contact
moving
static
static contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP17823582.6A
Other languages
English (en)
French (fr)
Other versions
EP3483913A4 (de
Inventor
Guping JIANG
Zhili JIANG
Xiang Gu
Han Wang
Wennan HE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Chint Electrics Co Ltd
Noark Electrics Shanghai Co Ltd
SEARI Electric Technology Co Ltd
Original Assignee
Zhejiang Chint Electrics Co Ltd
Noark Electrics Shanghai Co Ltd
SEARI Electric Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Chint Electrics Co Ltd, Noark Electrics Shanghai Co Ltd, SEARI Electric Technology Co Ltd filed Critical Zhejiang Chint Electrics Co Ltd
Publication of EP3483913A1 publication Critical patent/EP3483913A1/de
Publication of EP3483913A4 publication Critical patent/EP3483913A4/de
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/1045—Multiple circuits-breaker, e.g. for the purpose of dividing current or potential drop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/40—Multiple main contacts for the purpose of dividing the current through, or potential drop along, the arc

Definitions

  • Embodiments of the present invention relate to the field of low voltage electrical appliances and, more particularly, to an electrical path in which a plurality of contacts of a circuit breaker are cascade-connected.
  • the solution for improving the rated working voltage of the DC circuit breaker is generally to adopt an external cascade method to provide multiple break points through multiple cascade-connected contacts to achieve a higher rated working voltage.
  • multiple cascade-connected contacts will increase the product volume, making external wiring cumbersome, increasing product cost and assembly steps.
  • the use of cascade-connection of multiple contacts requires changes in the position of the inlet terminal and the position of the outlet terminal, making the collaboration of the circuit breaker with other electrical equipment more complex.
  • Embodiments of the present invention disclose an electrical path for a circuit breaker, comprising: a first contact group and a second contact group.
  • the first contact group comprises a first static contact and a first moving contact, and the first static contact is connected to an inlet terminal.
  • the second contact group comprises a second static contact and a second moving contact. Wherein, the first moving contact and the second moving contact are electrically connected, the second static contact is connected to a trip unit, and the trip unit is connected to the outlet terminal.
  • first contact group and the second contact group are mounted coaxially, the first moving contact and the second moving contact being mounted on the same rotation shaft.
  • the inlet terminal is located on a first side of the rotation shaft, and the contacts of the first static contact and the first moving contact are located on the first side of the rotation shaft.
  • the contacts of the second static contact and the second moving contact are located on the first side of the rotation shaft.
  • the outlet terminal is located on a second side of the rotation shaft.
  • the second static contact extends from the first side of the rotation shaft to the second side of the rotation shaft around the second moving contact, and the second static contact is insulated from the second moving contact.
  • the second static contact bypasses from below the second moving contact with an insulating spacer disposed between the second static contact and the second moving contact.
  • an insulating spacer is provided between the second moving contact and the trip unit.
  • Embodiments of the present invention further disclose an electrical path for a circuit breaker, comprising: a first path and a second path.
  • the first path includes a first inlet terminal, a first contact group, a second contact group, a first trip unit, and a first outlet terminal.
  • the first contact group comprises a first static contact and a first moving contact, and the first static contact is connected to the first inlet terminal.
  • the second contact group comprises a second static contact and a second moving contact.
  • the first moving contact and the second moving contact are electrically connected, the second static contact is connected to the first trip unit, and the first trip unit is connected to the first outlet terminal.
  • the second path comprises a second inlet terminal, a third contact group, a second trip unit, and a second outlet terminal.
  • the third contact group comprises a third static contact and a third moving contact.
  • the third static contact is connected to the third inlet terminal, the third moving contact is connected to the second trip unit, and the second trip unit is connected to the second outlet terminal
  • first contact group, the second contact group, and the third contact group are coaxially mounted, and the first moving contact, the second moving contact, and the third moving contact are mounted on the same rotation shaft.
  • the first inlet terminal is located on a first side of the rotation shaft, and the contacts of the first static contact and the first moving contact are located on the first side of the rotation shaft.
  • the contacts of the second static contact and the second moving contact are located on the first side of the rotation shaft.
  • the first outlet terminal is located on a second side of the rotation shaft.
  • the second static contact extends from the first side of the rotation shaft to the second side of the rotation shaft around the second moving contact, and the second static contact is insulated from the second moving contact.
  • the second static contact bypasses from below the second moving contact with an insulating spacer disposed between the second static contact and the second moving contact.
  • an insulating spacer is provided between the second moving contact and the second trip unit.
  • the electrical path for a circuit breaker electrically connects a plurality of moving contacts.
  • the plurality of moving contacts are coaxially mounted, and the static contacts are connected to the outlet terminal across the moving contacts while ensuring insulation.
  • the inlet terminal and the outlet terminal are arranged on the two sides, thereby facilitating the wiring of the circuit breaker and other electrical equipment.
  • Embodiments of the present invention disclose an electrical path for a circuit breaker, comprising: a first contact group and a second contact group.
  • the first contact group comprises a first static contact and a first moving contact, and the first static contact is connected to an inlet terminal.
  • the second contact group comprises a second static contact and a second moving contact.
  • the first moving contact and the second moving contact are electrically connected, the second static contact is connected to a trip unit, and the trip unit is connected to an outlet terminal.
  • the first contact group and the second contact group are mounted coaxially, the first moving contact and the second moving contact being mounted on the same rotation shaft.
  • the inlet terminal is located on a first side of the rotation shaft, and the contacts of the first static contact and the first moving contact are located on the first side of the rotation shaft.
  • the contacts of the second static contact and the second moving contact are located on the first side of the rotation shaft.
  • the outlet terminal is located on a second side of the rotation shaft.
  • the second static contact extends from the first side of the rotation shaft to the second side of the rotation shaft around the second moving contact, and the second static contact is insulated from the second moving contact.
  • the second static contact bypasses from below the second moving contact with an insulating spacer disposed between the second static contact and the second moving contact.
  • An insulating spacer is disposed between the second moving contact and the trip unit.
  • FIG. 1 shows a structural diagram of an electrical path in accordance with an embodiment of the present invention.
  • FIG. 1 shows an arrangement scheme for applying an electrical path according to one or more embodiments of the present invention to a circuit breaker.
  • the electrical path of the circuit breaker comprises: a first path and a second path.
  • the first path includes a first inlet terminal 101, a first contact group, a second contact group, a first trip unit 104, and a first outlet terminal 105.
  • the first contact group comprises a first static contact 121 and a first moving contact 122.
  • the first static contact 121 is connected to the first inlet terminal 101.
  • the second contact group comprises a second static contact 131 and a second moving contact 132.
  • the first moving contact 122 and the second moving contact 132 are electrically connected.
  • electrical connection means that the first moving contact 122 and the second moving contact 132 are electrically connected.
  • the first moving contact 122 and the second moving contact 132 may be electrically connected by a soft connection, a hard connection, or a combination of a soft connection and a hard connection.
  • the second static contact 131 is connected to the first trip unit 104, and the first trip unit 104 is connected to the first outlet terminal 105.
  • the second path comprises a second inlet terminal 201, a third contact group, a second trip 204, and a second outlet terminal 205.
  • the third contact group includes a third static contact 221 and a third moving contact 222.
  • the third static contact 221 is connected to the third inlet terminal 201, and the third moving contact 222 is connected to the second trip unit 204.
  • the second trip unit 204 is connected to the second outlet terminal.
  • coaxial mounting means that the first moving contact 122, the second moving contact 132, and the third moving contact 222 are mounted on the same rotation shaft.
  • coaxial mounting here means that the first moving contact 122, the second moving contact 132, and the third moving contact 222 share the same rotation shaft, but the first moving contact 122, the second moving contact 132, and the third moving contact 222 independently rotate and do not interfere with one another.
  • the first moving contact 122, the second moving contact 132, and the third moving contact 222 are independent of each other and can be independently closed or opened as needed.
  • the first inlet terminal 101 is located on a first side of the rotation shaft.
  • the first side of the rotation shaft is the right side of the illustration and the second side of the rotation shaft is the left side of the illustration.
  • the contacts of the first static contact 121 and the first moving contact 122 are located on the first side of the rotation shaft.
  • the contacts of the first static contact 121 and the first moving contact 122 are silver dots.
  • the contacts of the second static contact 131 and the second moving contact 132 are located on the first side of the rotation shaft.
  • the contacts of the second static contact 131 and the second moving contact 132 are silver dots.
  • the first outlet terminal 105 and the first trip unit 104 are located on the second side of the rotation shaft.
  • the second static contact 131 needs to bypass the second moving contact 132 (the second moving contact 132 being mounted on the rotation shaft), extending from the first side of the rotation shaft to the second side of the rotation shaft. Since the second static contact 131 bypasses the second moving contact 132, insulation between the second static contact and the second moving contact is required to avoid direct connection between the two.
  • FIG. 2 shows a structural diagram of a second static contact in an electrical path in accordance with an embodiment of the present invention.
  • the main body of the second static contact 131 is a concave conductive strip, and the concave portion is located below the moving contact 132 so that the second static contact 131 can bypass from below the second moving contact 132.
  • a first end of the second static contact 131 (the left end shown in the drawing) has a contact 301 which, in one embodiment, is a silver dot.
  • the first end of the second static contact 131 extends outward to cooperate with the contact of the second moving contact 132.
  • a second end of the second static contact 131 is connected to the first trip unit 104, and the second end of the second static contact 131 has a hole 302.
  • the first trip unit 104 is fixed by a fastener such as a screw and connected to the second static contact 131. The screw passes through the hole 302 and is tightened such that the first trip unit 104 is fixedly connected to the conductive strip of the second static contact 131.
  • FIG 3 shows a structural diagram of a second contact group in an electrical path in accordance with an embodiment of the present invention.
  • the second static contact 131 and the second moving contact 132 form a contact on the first side (the left side shown in the drawing).
  • the second static contact 131 bypasses from below the second moving contact 132, and the second end of the second static contact 131 is connected to the first trip unit 104.
  • FIGs. 4a , 4b , and 4c show schematic diagrams of an insulating structure of a second contact group in an electrical path in accordance with an embodiment of the present invention.
  • the insulation of the second contact group comprises two parts: an insulation between the second static contact and the second moving contact, and an insulation between the second moving contact and the first trip unit.
  • the second static contact and the second moving contact are insulated from each other using a base.
  • the base 401 is provided with two slots. The first end of the second static contact 131 enters the interior of the base from one of the slots, and the second end of the second static contact 131 enters the interior of the base from the other slot.
  • the concave portion of the second static contact 131 is left outside the base, and a portion of a housing 402 of the base is sandwiched between the second static contact 131 and the second moving contact 132 so as to form an insulation. Both ends of the second static contact 131 enter the interior of the base to cooperate with the moving contact and the trip unit.
  • the housing of the base 401 itself serves as an isolation member insulating the second static contact from the second moving contact.
  • the second moving contact and the first trip unit are also insulated by the base.
  • the base 401 has a partition 403 disposed between the second moving contact 132 and the first trip unit 104 to insulate the two.
  • the housing of the base 401 itself also serves as an isolation member insulating the second moving contact from the first trip unit.
  • the electric current path in this embodiment is indicated by solid arrow lines. Since the current path of the second path is a normal path, it is not marked, and the current path of the first loop is marked.
  • the current path of the first path is as follows:
  • the current enters from the first inlet terminal (marked as 1), reaches the first moving contact through the first static contact of the first contact group (marked as 2), passes through the first moving contact (marked as 3), reaches the second moving contact through the electrical path between the first moving contact and the second moving contact (marked as 4), reaches the second static contact through the second moving contact (marked as 5), reaches the second end of the second static contact from the contact of the second static contact through the concave conductive strip (marked as 6), reaches the first trip unit from the second end of the second static contact (marked as 7), reaches the first outlet terminal through the first trip unit (marked as 8), and exits from the first outlet terminal (marked as 9).
  • FIGs. 5a and 5b show circuit diagrams of an electrical path in accordance with an embodiment of the present invention.
  • FIG. 5a is a circuit diagram of a conventional circuit breaker having dual paths. As shown in FIG. 5a , each of the two paths requires the use of two contact groups, and the two paths require a total of four contact groups.
  • FIG. 5b is a circuit diagram of an electrical path in accordance with an embodiment of the present invention.
  • the electrical path of the present invention uses only three contact groups. Since the contact group has a large volume and is a relatively large component in the circuit breaker, the use of one less contact group can significantly reduce the overall volume of the circuit breaker.
  • the width of a circuit breaker using the electrical path of the present invention can be substantially reduced to 3/4 of that of a circuit breaker using a conventional electrical path.
  • the electrical path for a circuit breaker electrically connects a plurality of moving contacts.
  • the plurality of moving contacts are coaxially mounted, and the static contacts are connected to the outlet terminal across the moving contacts while ensuring insulation.
  • the inlet terminal and the outlet terminal are arranged on the two sides, thereby facilitating the wiring of the circuit breaker and other electrical equipment.

Landscapes

  • Breakers (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP17823582.6A 2016-07-06 2017-07-03 Leitfähige schleife eines schutzschalters Pending EP3483913A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610527648.3A CN105914109B (zh) 2016-07-06 2016-07-06 断路器的导电回路
PCT/CN2017/091420 WO2018006770A1 (zh) 2016-07-06 2017-07-03 断路器的导电回路

Publications (2)

Publication Number Publication Date
EP3483913A1 true EP3483913A1 (de) 2019-05-15
EP3483913A4 EP3483913A4 (de) 2020-01-15

Family

ID=56754490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17823582.6A Pending EP3483913A4 (de) 2016-07-06 2017-07-03 Leitfähige schleife eines schutzschalters

Country Status (8)

Country Link
EP (1) EP3483913A4 (de)
CN (1) CN105914109B (de)
BR (1) BR112019000286A2 (de)
CL (1) CL2019000022A1 (de)
CO (1) CO2019000053A2 (de)
MX (1) MX2019000259A (de)
PE (1) PE20190538A1 (de)
WO (1) WO2018006770A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105914109B (zh) * 2016-07-06 2018-09-04 上海电科电器科技有限公司 断路器的导电回路
EP3523628B1 (de) 2016-10-06 2023-02-22 Iris International, Inc. System und verfahren für dynamischen fokus
CN107644792A (zh) * 2017-10-31 2018-01-30 德力西电气有限公司 一种塑料外壳式直流断路器内置联结机构
CN107658194A (zh) * 2017-10-31 2018-02-02 德力西电气有限公司 一种用于低压直流断路器的内部级联结构
FR3095890B1 (fr) 2019-05-06 2021-07-16 Schneider Electric Ind Sas Pôle limiteur d’interrupteur électrique et interrupteur électrique à courant continu comportant un tel pôle limiteur

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH409092A (it) * 1964-04-11 1966-03-15 Bassani Spa Interruttore automatico magnetotermico
ES2100506T3 (es) * 1993-10-15 1997-06-16 Hager Electro Chapa de conduccion doble para camara de conduccion de arco de disyuntor.
FR2805078B1 (fr) * 2000-02-14 2004-09-17 Realisation De Disjoncteurs So Interrupteur multipolaire
JP4918890B2 (ja) * 2007-06-28 2012-04-18 富士電機機器制御株式会社 回路遮断器
CN101819908B (zh) * 2010-04-16 2012-08-29 江苏辉能电气有限公司 低压断路器的导电回路结构
JP5510163B2 (ja) * 2010-08-02 2014-06-04 富士電機機器制御株式会社 回路遮断器
CN201829430U (zh) * 2010-10-20 2011-05-11 北京人民电器厂有限公司 一种多断点塑料外壳式断路器
CN102456515B (zh) * 2010-10-20 2014-09-24 北京人民电器厂有限公司 一种多断点塑料外壳式断路器
CN102592903B (zh) * 2011-01-10 2015-04-08 北京人民电器厂有限公司 多断点断路器
CN102891047B (zh) * 2012-09-26 2013-12-11 常熟开关制造有限公司(原常熟开关厂） 开关装置的导电回路结构
CN203300573U (zh) * 2013-06-03 2013-11-20 常熟开关制造有限公司(原常熟开关厂） 多断点塑料外壳式断路器
CN105914109B (zh) * 2016-07-06 2018-09-04 上海电科电器科技有限公司 断路器的导电回路
CN205863109U (zh) * 2016-07-06 2017-01-04 上海电科电器科技有限公司 断路器的导电回路

Also Published As

Publication number Publication date
CN105914109A (zh) 2016-08-31
EP3483913A4 (de) 2020-01-15
BR112019000286A2 (pt) 2019-04-16
MX2019000259A (es) 2019-09-09
CO2019000053A2 (es) 2019-03-29
WO2018006770A1 (zh) 2018-01-11
CN105914109B (zh) 2018-09-04
CL2019000022A1 (es) 2019-05-31
PE20190538A1 (es) 2019-04-11

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