EP0903765A3 - A circuit breaker - Google Patents

A circuit breaker Download PDF

Info

Publication number
EP0903765A3
EP0903765A3 EP98307415A EP98307415A EP0903765A3 EP 0903765 A3 EP0903765 A3 EP 0903765A3 EP 98307415 A EP98307415 A EP 98307415A EP 98307415 A EP98307415 A EP 98307415A EP 0903765 A3 EP0903765 A3 EP 0903765A3
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
housing
oval
primary housing
operating mechanism
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
EP98307415A
Other languages
German (de)
French (fr)
Other versions
EP0903765A2 (en
EP0903765B1 (en
Inventor
Dante Bagalini
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 EP0903765A2 publication Critical patent/EP0903765A2/en
Publication of EP0903765A3 publication Critical patent/EP0903765A3/en
Application granted granted Critical
Publication of EP0903765B1 publication Critical patent/EP0903765B1/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
    • 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 imbalance 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 imbalance 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
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance 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 imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • H01H2083/148—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer with primary windings formed of rigid copper conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)

Abstract

A circuit breaker 10 includes a primary housing 12 containing an operating mechanism 14, the operating mechanism 14 including a plurality of output conductors 16. An earth leakage sensing device comprising an oval-shaped core 20 is mounted in the primary housing 12. Electrically conductive elements 22 are mounted on the output conductors 16 and project through an oval-shaped opening defined by the core 20. Current sensing circuitry and earth leakage sensing circuitry are incorporated in a secondary housing 42, the secondary housing 42 being received within the primary housing 12.
EP98307415A 1997-09-19 1998-09-14 A circuit breaker Expired - Lifetime EP0903765B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA978466 1997-09-19
ZA9708466 1997-09-19

Publications (3)

Publication Number Publication Date
EP0903765A2 EP0903765A2 (en) 1999-03-24
EP0903765A3 true EP0903765A3 (en) 1999-11-17
EP0903765B1 EP0903765B1 (en) 2002-11-13

Family

ID=25586600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98307415A Expired - Lifetime EP0903765B1 (en) 1997-09-19 1998-09-14 A circuit breaker

Country Status (4)

Country Link
EP (1) EP0903765B1 (en)
JP (1) JPH11185593A (en)
AT (1) ATE227883T1 (en)
DE (1) DE69809359T2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3069718B1 (en) * 2017-07-25 2019-08-09 Schneider Electric Industries Sas DIFFERENTIAL ELECTRICAL PROTECTION APPARATUS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681725A1 (en) * 1991-09-20 1993-03-26 Toshiba Kk Circuit breaker
WO1996003760A1 (en) * 1994-07-23 1996-02-08 Delta Circuit Protection & Controls Limited Current imbalance sensor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681725A1 (en) * 1991-09-20 1993-03-26 Toshiba Kk Circuit breaker
WO1996003760A1 (en) * 1994-07-23 1996-02-08 Delta Circuit Protection & Controls Limited Current imbalance sensor

Also Published As

Publication number Publication date
DE69809359T2 (en) 2003-09-04
DE69809359D1 (en) 2002-12-19
EP0903765A2 (en) 1999-03-24
JPH11185593A (en) 1999-07-09
ATE227883T1 (en) 2002-11-15
EP0903765B1 (en) 2002-11-13

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