EP2535916A3 - Improved magnetic core coupling in a current transformer with integrated magnetic actuator - Google Patents

Improved magnetic core coupling in a current transformer with integrated magnetic actuator Download PDF

Info

Publication number
EP2535916A3
EP2535916A3 EP12172356A EP12172356A EP2535916A3 EP 2535916 A3 EP2535916 A3 EP 2535916A3 EP 12172356 A EP12172356 A EP 12172356A EP 12172356 A EP12172356 A EP 12172356A EP 2535916 A3 EP2535916 A3 EP 2535916A3
Authority
EP
European Patent Office
Prior art keywords
current transformer
core coupling
actuator
magnetic core
magnetic
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.)
Granted
Application number
EP12172356A
Other languages
German (de)
French (fr)
Other versions
EP2535916B1 (en
EP2535916A2 (en
Inventor
Jeffrey Annis
Hans Weichert
Pascal Benz
Sandro Liberto
Beat Villinger
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.)
Rockwell Automation Technologies Inc
Original Assignee
Rockwell Automation Technologies Inc
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 US13/162,852 external-priority patent/US8681466B2/en
Application filed by Rockwell Automation Technologies Inc filed Critical Rockwell Automation Technologies Inc
Publication of EP2535916A2 publication Critical patent/EP2535916A2/en
Publication of EP2535916A3 publication Critical patent/EP2535916A3/en
Application granted granted Critical
Publication of EP2535916B1 publication Critical patent/EP2535916B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • H01H71/125—Automatic release mechanisms with or without manual release using a solid-state trip unit characterised by sensing elements, e.g. current transformers
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
    • H01H2071/124—Automatic release mechanisms with or without manual release using a solid-state trip unit with a hybrid structure, the solid state trip device being combined with a thermal or a electromagnetic trip
    • 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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2463—Electromagnetic mechanisms with plunger type armatures

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Breakers (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Electromagnets (AREA)

Abstract

A system comprising a magnetic actuator, a current transformer and operational electronics in a dual-coil circuit breaker. The system includes an inline, but non concentric, implementation of the primary and secondary coils to maintain a narrow width suitable for retrofitting in standard industrial rack mounted enclosures. The system further comprises an I-shaped lamination stack that is designed to abut on the ends of an upper and lower plate of the current transformer. The I-shaped lamination stack significantly increases the overlap between the lamination and the upper and lower plates, which results in lower magnetic reluctance and improves magnetic coupling.
EP12172356.3A 2011-06-17 2012-06-18 Improved magnetic core coupling in a current transformer with integrated magnetic actuator Active EP2535916B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13/162,852 US8681466B2 (en) 2009-05-08 2011-06-17 Magnetic core coupling in a current transformer with integrated magnetic actuator

Publications (3)

Publication Number Publication Date
EP2535916A2 EP2535916A2 (en) 2012-12-19
EP2535916A3 true EP2535916A3 (en) 2013-03-13
EP2535916B1 EP2535916B1 (en) 2016-03-30

Family

ID=46395474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12172356.3A Active EP2535916B1 (en) 2011-06-17 2012-06-18 Improved magnetic core coupling in a current transformer with integrated magnetic actuator

Country Status (2)

Country Link
EP (1) EP2535916B1 (en)
CN (1) CN102969208B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116705471B (en) * 2023-08-03 2023-10-31 赣州牧磁电子科技有限公司 Blank stacking machine for magnetic core goods shelves

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712043A (en) * 1951-03-22 1955-06-28 Maupas Charles Francois Emile Instantaneous-acting relay for controlling the strength of a current
US4134089A (en) * 1977-07-28 1979-01-09 General Electric Company Electromagnet for an extremely inverse time overcurrent protective relay
EP0841670A1 (en) * 1996-11-07 1998-05-13 Schneider Electric Sa Current transformer, trip device and circuit breaker comprising such a transformer
US20100332046A1 (en) * 2009-05-08 2010-12-30 Rockwell Automation Technologies, Inc. Current transformer with integrated actuator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760309A (en) * 1972-06-22 1973-09-18 Robertshaw Controls Co Adjustable actuating level current sensing relay
KR100815467B1 (en) * 2006-05-02 2008-03-26 디피씨(주) Pass core of transformer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712043A (en) * 1951-03-22 1955-06-28 Maupas Charles Francois Emile Instantaneous-acting relay for controlling the strength of a current
US4134089A (en) * 1977-07-28 1979-01-09 General Electric Company Electromagnet for an extremely inverse time overcurrent protective relay
EP0841670A1 (en) * 1996-11-07 1998-05-13 Schneider Electric Sa Current transformer, trip device and circuit breaker comprising such a transformer
US20100332046A1 (en) * 2009-05-08 2010-12-30 Rockwell Automation Technologies, Inc. Current transformer with integrated actuator

Also Published As

Publication number Publication date
CN102969208A (en) 2013-03-13
EP2535916B1 (en) 2016-03-30
CN102969208B (en) 2016-04-06
EP2535916A2 (en) 2012-12-19

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