EP0948020A2 - Unité de déclenchement pour un disjoncteur hydraulique/magnétique - Google Patents

Unité de déclenchement pour un disjoncteur hydraulique/magnétique Download PDF

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Publication number
EP0948020A2
EP0948020A2 EP99302511A EP99302511A EP0948020A2 EP 0948020 A2 EP0948020 A2 EP 0948020A2 EP 99302511 A EP99302511 A EP 99302511A EP 99302511 A EP99302511 A EP 99302511A EP 0948020 A2 EP0948020 A2 EP 0948020A2
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
trip unit
hydraulic
unit
housing
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.)
Withdrawn
Application number
EP99302511A
Other languages
German (de)
English (en)
Other versions
EP0948020A3 (fr
Inventor
Wolfgang Weber
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.)
Circuit Breakers Ind Ltd
Original Assignee
Circuit Breakers Ind 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 Circuit Breakers Ind Ltd filed Critical Circuit Breakers Ind Ltd
Publication of EP0948020A2 publication Critical patent/EP0948020A2/fr
Publication of EP0948020A3 publication Critical patent/EP0948020A3/fr
Withdrawn legal-status Critical Current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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/34—Electromagnetic mechanisms having two or more armatures controlled by a common winding
    • H01H71/345—Electromagnetic mechanisms having two or more armatures controlled by a common winding having a delayed movable core and a movable armature
    • 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
    • H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
    • H01H71/7409—Interchangeable elements

Definitions

  • THIS INVENTION relates to a circuit breaker. More particularly, the invention relates to a trip unit for an hydraulic/magnetic circuit breaker.
  • an hydraulic/magnetic trip unit for a circuit breaker, the trip unit being modular and removable from the circuit breaker.
  • the trip unit may include a housing in which an hydraulic/magnetic coil and tube assembly is housed, with the housing being dimensioned to be receivable in a recess in a base of the circuit breaker.
  • the trip unit may further include a tripping mechanism which is engageable, in use, with an operating mechanism of the circuit breaker for effecting tripping of the circuit breaker.
  • the trip unit may also include an electrical connecting means for connecting the coil and tube assembly of the unit to terminals of the circuit breaker.
  • the electrical connecting means may be in the form of lugs which protrude from the housing and which, in use, engage with the terminals of the circuit breaker which is located in the base.
  • a circuit breaker which includes a modular and removable hydraulic/magnetic trip unit as described above, so that its ratings are changeable by inserting therein a unit with an appropriate rating.
  • reference numeral 10 generally designates a trip unit, in accordance with the invention for a circuit breaker.
  • the trip unit 10 is an hydraulic/magnetic trip unit and is modular and removable in nature.
  • the trip unit 10 comprises a housing 12 which is removably receivable in a recess 14 ( Figure 2) of a base 16 of a circuit breaker, illustrated schematically at 18.
  • the trip unit 10 comprises an hydraulic/magnetic coil and tube assembly 20 arranged in the housing 12 of the trip unit 10.
  • the assembly 20 comprises a tube 22 arranged within, and surrounded by, a coil 24.
  • the trip unit 10 also includes a tripping mechanism 26 having a tripping lever 28 which is attracted by the tube 20 for effecting tripping of the circuit breaker, in use.
  • the tripping lever 28 engages a tripping arm 30 arranged externally of the housing 12 of the trip unit 10.
  • the coil 24 of the assembly 22 has electrical connecting means in the form of lugs 32 connected thereto.
  • the lugs 32 protrude from the housing 12.
  • Electrical connecting means in the form of electrical terminals 34 are arranged in the recess 14 of the base 16 of the circuit breaker 18.
  • the trip unit 10 is mounted in the recess 14 of the housing 16 so that the lugs 32 electrically engage and are connected to the terminals 34.
  • the trip arm 30 of the tripping mechanism 26 of the trip unit 10 engages an operating mechanism in the form of a cradle 36 mounted pivotally on the base 16 for effecting tripping of the circuit breaker 18, in use.
  • an hydraulic/magnetic circuit breaker 18 which has a removable and modular trip unit 10. In so doing, the rating of the circuit breaker 18 can easily and quickly be changed by insertion of the appropriate trip unit 10.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP99302511A 1998-04-02 1999-03-31 Unité de déclenchement pour un disjoncteur hydraulique/magnétique Withdrawn EP0948020A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA982814 1998-04-02
ZA9802814 1998-04-02

Publications (2)

Publication Number Publication Date
EP0948020A2 true EP0948020A2 (fr) 1999-10-06
EP0948020A3 EP0948020A3 (fr) 2000-06-07

Family

ID=25586932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99302511A Withdrawn EP0948020A3 (fr) 1998-04-02 1999-03-31 Unité de déclenchement pour un disjoncteur hydraulique/magnétique

Country Status (2)

Country Link
EP (1) EP0948020A3 (fr)
JP (1) JPH11329200A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6956452B2 (en) 2003-09-24 2005-10-18 General Electric Company Apparatus and method for circuit breaker trip unit adjustment
US6980071B2 (en) 2003-09-24 2005-12-27 General Electric Company Apparatus and method for circuit breaker trip unit adjustment

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729696A (en) * 1972-04-26 1973-04-24 Heinemann Electric Co Time delay actuator
US4088973A (en) * 1976-04-28 1978-05-09 Gould Inc. Unitized combination starter
US4129843A (en) * 1976-10-05 1978-12-12 I-T-E Imperial Corporation Magnetic trip means for circuit breaker
FR2505553A1 (fr) * 1981-05-07 1982-11-12 Merlin Gerin Disjoncteur multipolaire a bloc declencheur magnetothermique interchangeable
CA1245698A (fr) * 1983-06-02 1988-11-29 Gregory T. Divincenzo Disjoncteur concu pour une fabrication acceleree
JP2583491B2 (ja) * 1986-08-07 1997-02-19 三菱電機株式会社 回路しや断器
US5634554A (en) * 1994-12-15 1997-06-03 Siemens Energy & Automation, Inc. Interface connection for a circuit breaker plug-in trip unit

Also Published As

Publication number Publication date
EP0948020A3 (fr) 2000-06-07
JPH11329200A (ja) 1999-11-30

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