GB2398427A - Contactors - Google Patents

Contactors Download PDF

Info

Publication number
GB2398427A
GB2398427A GB0413098A GB0413098A GB2398427A GB 2398427 A GB2398427 A GB 2398427A GB 0413098 A GB0413098 A GB 0413098A GB 0413098 A GB0413098 A GB 0413098A GB 2398427 A GB2398427 A GB 2398427A
Authority
GB
United Kingdom
Prior art keywords
plungers
contact
fixed contacts
separation
plunger
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
GB0413098A
Other versions
GB2398427B (en
GB0413098D0 (en
Inventor
Richard Anthony Connell
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.)
BLP Components Ltd
Original Assignee
BLP Components 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 GB0128539A external-priority patent/GB0128539D0/en
Application filed by BLP Components Ltd filed Critical BLP Components Ltd
Publication of GB0413098D0 publication Critical patent/GB0413098D0/en
Publication of GB2398427A publication Critical patent/GB2398427A/en
Application granted granted Critical
Publication of GB2398427B publication Critical patent/GB2398427B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2209—Polarised relays with rectilinearly movable armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F7/1615—Armatures or stationary parts of magnetic circuit having permanent magnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/124—Guiding or setting position of armatures, e.g. retaining armatures in their end position by mechanical latch, e.g. detent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
    • H01H1/221—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member
    • H01H1/226—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact and a contact pressure spring acting between the pivoted member and a supporting member having a plurality of parallel contact bars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnets (AREA)

Abstract

A two-pole contactor includes a contact assembly (24) for making and breaking contact between a pair of fixed contacts (8, 10) at each pole. The contact assembly is a plastics moulding carrying a resiliently supported shorting bar and is coupled to a plunger of a solenoid. In order to make a contact, the plunger accelerates the contact assembly towards the fixed contacts, until the contact bar touches the fixed contacts. The plunger and the remainder of the contact assembly then continues to move through a predetermined distance, loading the resiliently supported shorting bar against the fixed contacts. To break contact, the procedure is reversed. The solenoid has two plungers slidable within a common bore and separated by a compression spring. Permanent magnets situated at each end of the solenoid core induce an attractive force between the plungers. When the separation between the plungers is smaller than a threshold separation, the magnetic attraction overcomes the spring force and the plungers latch together. When the separation between the plungers is greater than the threshold separation, the force exerted by the spring is greater than the magnetic attraction and so the plungers de-latch in a separated position, in which the contacts at both poles of the contactor are open.

Description

GB 2398427 A continuation (74) Agent and/or Address for Service: Reddie &
Grose 16 Theabalds Road, LONDON, WC1X 8PL, United Kingdom
GB0413098A 2001-11-29 2002-11-27 Contactors Expired - Lifetime GB2398427B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0128539A GB0128539D0 (en) 2001-11-29 2001-11-29 Contactors
GB0223095A GB2382721B (en) 2001-11-29 2002-10-04 Contactors
PCT/GB2002/005332 WO2003049129A1 (en) 2001-11-29 2002-11-27 Contactors

Publications (3)

Publication Number Publication Date
GB0413098D0 GB0413098D0 (en) 2004-07-14
GB2398427A true GB2398427A (en) 2004-08-18
GB2398427B GB2398427B (en) 2005-08-24

Family

ID=26246814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0413098A Expired - Lifetime GB2398427B (en) 2001-11-29 2002-11-27 Contactors

Country Status (3)

Country Link
AU (1) AU2002343106A1 (en)
GB (1) GB2398427B (en)
WO (1) WO2003049129A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8040664B2 (en) 2008-05-30 2011-10-18 Itron, Inc. Meter with integrated high current switch
US8203403B2 (en) 2009-08-27 2012-06-19 Tyco Electronics Corporation Electrical switching devices having moveable terminals
US8890711B2 (en) 2009-09-30 2014-11-18 Itron, Inc. Safety utility reconnect
US8564386B2 (en) 2011-01-18 2013-10-22 Tyco Electronics Corporation Electrical switching device
US8222981B1 (en) 2011-01-18 2012-07-17 Tyco Electronics Corporation Electrical switching device
US8314668B1 (en) * 2011-08-19 2012-11-20 General Electric Company Meter disconnect relay having silver refractory materials contacts
ITAN20120050A1 (en) * 2012-05-02 2013-11-03 Ideal Srl DEVICE FOR AUTOMATIC RESET OF THE LEVER DISCONNECTOR OF THE ELECTRIC COUNTERS.
US9005423B2 (en) 2012-12-04 2015-04-14 Itron, Inc. Pipeline communications

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966034C (en) * 1942-01-25 1957-07-04 Voigt & Haeffner Ag Spring-loaded block contact
GB816636A (en) * 1956-11-09 1959-07-15 Gen Electric Co Ltd Improvements in or relating to electric contact arrangements
US3272949A (en) * 1964-08-14 1966-09-13 Allen Bradley Co Bifurcated parallel contacts for relay
DE2733800A1 (en) * 1977-07-27 1979-02-15 Gruner Gmbh Und Co Relaisfabri Multiple contact relay with contacts laterally to magnetic coil - has all contacts distributed over coil length and at equal spacing from coil
US4338535A (en) * 1979-03-24 1982-07-06 Fujitsu Fanuc Limited Direct current motor having E-shaped interpoles
US4430579A (en) * 1982-08-23 1984-02-07 Automatic Switch Company Electrically operated, mechanically held electrical switching device
WO1990005374A1 (en) * 1988-11-09 1990-05-17 Ped Limited Improvements in electromagnetic devices
EP0373271A1 (en) * 1988-12-15 1990-06-20 Circuit Breaker Industries Limited An electro-magnetic shunt trip device
US5652558A (en) * 1996-04-10 1997-07-29 The Narda Microwave Corporation Double pole double throw RF switch
WO1998040898A2 (en) * 1997-03-08 1998-09-17 Blp Components Limited Two pole contactor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388535A (en) * 1981-05-18 1983-06-14 Automatic Switch Company Electric power interrupting switch
IT1257229B (en) * 1992-06-10 1996-01-10 Magneti Marelli Spa ELECTROMAGNETIC DEVICE FOR THE CONTROL OF THE CURRENT SUPPLY TO THE ELECTRIC STARTING MOTOR OF AN INTERNAL COMBUSTION ENGINE.
DE4301056A1 (en) * 1993-01-16 1994-07-21 Bosch Gmbh Robert Electromagnetic switch, in particular engagement relay for the starter of an internal combustion engine

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE966034C (en) * 1942-01-25 1957-07-04 Voigt & Haeffner Ag Spring-loaded block contact
GB816636A (en) * 1956-11-09 1959-07-15 Gen Electric Co Ltd Improvements in or relating to electric contact arrangements
US3272949A (en) * 1964-08-14 1966-09-13 Allen Bradley Co Bifurcated parallel contacts for relay
DE2733800A1 (en) * 1977-07-27 1979-02-15 Gruner Gmbh Und Co Relaisfabri Multiple contact relay with contacts laterally to magnetic coil - has all contacts distributed over coil length and at equal spacing from coil
US4338535A (en) * 1979-03-24 1982-07-06 Fujitsu Fanuc Limited Direct current motor having E-shaped interpoles
US4430579A (en) * 1982-08-23 1984-02-07 Automatic Switch Company Electrically operated, mechanically held electrical switching device
WO1990005374A1 (en) * 1988-11-09 1990-05-17 Ped Limited Improvements in electromagnetic devices
EP0373271A1 (en) * 1988-12-15 1990-06-20 Circuit Breaker Industries Limited An electro-magnetic shunt trip device
US5652558A (en) * 1996-04-10 1997-07-29 The Narda Microwave Corporation Double pole double throw RF switch
WO1998040898A2 (en) * 1997-03-08 1998-09-17 Blp Components Limited Two pole contactor

Also Published As

Publication number Publication date
GB2398427B (en) 2005-08-24
AU2002343106A1 (en) 2003-06-17
GB0413098D0 (en) 2004-07-14
WO2003049129A1 (en) 2003-06-12

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20120719 AND 20120725

PE20 Patent expired after termination of 20 years

Expiry date: 20221126