EP3889987A4 - Circuit breaker - Google Patents

Circuit breaker Download PDF

Info

Publication number
EP3889987A4
EP3889987A4 EP19890761.0A EP19890761A EP3889987A4 EP 3889987 A4 EP3889987 A4 EP 3889987A4 EP 19890761 A EP19890761 A EP 19890761A EP 3889987 A4 EP3889987 A4 EP 3889987A4
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
breaker
circuit
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
EP19890761.0A
Other languages
German (de)
French (fr)
Other versions
EP3889987A1 (en
Inventor
Jin Liu
Jie Li
Jun Zhu
Luobin LI
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
Original Assignee
Zhejiang Chint Electrics 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
Priority claimed from CN201811470300.0A external-priority patent/CN109659210B/en
Priority claimed from CN201911024772.8A external-priority patent/CN111341612A/en
Application filed by Zhejiang Chint Electrics Co Ltd filed Critical Zhejiang Chint Electrics Co Ltd
Priority claimed from PCT/CN2019/122030 external-priority patent/WO2020108624A1/en
Publication of EP3889987A1 publication Critical patent/EP3889987A1/en
Publication of EP3889987A4 publication Critical patent/EP3889987A4/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • 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
    • H01H71/002—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00 with provision for switching the neutral conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by unbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by unbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
    • H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit
    • 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
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
    • H01H71/526—Manual reset mechanisms which may be also used for manual release actuated by lever the lever forming a toggle linkage with a second lever, the free end of which is directly and releasably engageable with a contact structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
EP19890761.0A 2018-11-30 2019-11-29 Circuit breaker Pending EP3889987A4 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201822001335 2018-11-30
CN201811470300.0A CN109659210B (en) 2018-11-30 2018-11-30 Circuit breaker
CN201911024772.8A CN111341612A (en) 2018-11-30 2019-10-25 Circuit breaker
PCT/CN2019/122030 WO2020108624A1 (en) 2018-11-30 2019-11-29 Circuit breaker

Publications (2)

Publication Number Publication Date
EP3889987A1 EP3889987A1 (en) 2021-10-06
EP3889987A4 true EP3889987A4 (en) 2022-08-24

Family

ID=76327612

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890761.0A Pending EP3889987A4 (en) 2018-11-30 2019-11-29 Circuit breaker

Country Status (2)

Country Link
EP (1) EP3889987A4 (en)
AU (1) AU2019386913B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114023592B (en) * 2021-11-08 2023-08-01 河南华盛隆源电气有限公司 High-voltage circuit breaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014167603A1 (en) * 2013-04-11 2014-10-16 パナソニック 株式会社 Operation display mechanism, circuit breaker, compound breaker, and display member

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206148380U (en) * 2016-11-02 2017-05-03 乐清市也为电气有限公司 Electric leakage circuit breaker that can positive and negatively work a telephone switchboard

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014167603A1 (en) * 2013-04-11 2014-10-16 パナソニック 株式会社 Operation display mechanism, circuit breaker, compound breaker, and display member

Also Published As

Publication number Publication date
EP3889987A1 (en) 2021-10-06
AU2019386913B2 (en) 2022-04-28
AU2019386913A1 (en) 2021-06-17

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Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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STAA Information on the status of an ep patent application or granted ep patent

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17P Request for examination filed

Effective date: 20210617

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20220722

RIC1 Information provided on ipc code assigned before grant

Ipc: H01H 73/40 20060101ALI20220718BHEP

Ipc: H01H 83/14 20060101AFI20220718BHEP