EP0903765A2 - Schutzschalter - Google Patents

Schutzschalter Download PDF

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Publication number
EP0903765A2
EP0903765A2 EP98307415A EP98307415A EP0903765A2 EP 0903765 A2 EP0903765 A2 EP 0903765A2 EP 98307415 A EP98307415 A EP 98307415A EP 98307415 A EP98307415 A EP 98307415A EP 0903765 A2 EP0903765 A2 EP 0903765A2
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
core
housing
output
primary 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.)
Granted
Application number
EP98307415A
Other languages
English (en)
French (fr)
Other versions
EP0903765B1 (de
EP0903765A3 (de
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/de
Publication of EP0903765A3 publication Critical patent/EP0903765A3/de
Application granted granted Critical
Publication of EP0903765B1 publication Critical patent/EP0903765B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the current transformer 33, the current sensing circuitry 36, the earth leakage sensing circuitry 38 and the shunt trip 40 are contained within a secondary housing 42 which is received in the part 12.3 of the housing 12 of the circuit breaker 10.
  • the housing 42 is mounted above the core 20 in the part 12.3 of the housing 12 such that the tripping mechanism engages the operating handle of the circuit breaker 10.
  • the arrangement of the oval-shaped core 20 parallel to the floor 18 of the base of the housing 12, and mounting of the secondary housing 42 above the core 12 facilitates the use of a housing 12 which has the same size as a conventional circuit breaker of the same rating but excluding an earth leakage facility.
  • the output conductors 16 from the operating mechanism of the circuit breaker 10 are arranged with their usual spacing so that there is no need to provide additional insulation about the output conductors 16 nor is there a need to reduce their rating to overcome heating problems.
  • circuit breaker 10 has been described with reference to electronic current sensing, it will be appreciated that the same configuration of earth leakage sensing facility can be also used with thermal-magnetic current sensing devices or hydraulic-magnetic current sensing devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Mechanisms For Operating Contacts (AREA)
EP98307415A 1997-09-19 1998-09-14 Schutzschalter Expired - Lifetime EP0903765B1 (de)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=25586600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98307415A Expired - Lifetime EP0903765B1 (de) 1997-09-19 1998-09-14 Schutzschalter

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3435398A1 (de) * 2017-07-25 2019-01-30 Schneider Electric Industries SAS Elektrisches differentialschutzgerät

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5276416A (en) * 1991-09-20 1994-01-04 Kabushiki Kaisha Toshiba Circuit breaker
GB9414873D0 (en) * 1994-07-23 1994-09-14 Delta Circuits Protection Current imbalance sensor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3435398A1 (de) * 2017-07-25 2019-01-30 Schneider Electric Industries SAS Elektrisches differentialschutzgerät
FR3069718A1 (fr) * 2017-07-25 2019-02-01 Schneider Electric Industries Sas Appareil de protection electrique differentielle
KR20190011672A (ko) * 2017-07-25 2019-02-07 슈나이더 일렉트릭 인더스트리스 에스에이에스 차동 전기 보호 디바이스
US11017971B2 (en) 2017-07-25 2021-05-25 Schneider Electric Industries Sas Differential electrical protection device that measures a differential current over a plurality of phase conductors
KR102549653B1 (ko) 2017-07-25 2023-06-29 슈나이더 일렉트릭 인더스트리스 에스에이에스 차동 전기 보호 디바이스

Also Published As

Publication number Publication date
DE69809359T2 (de) 2003-09-04
JPH11185593A (ja) 1999-07-09
EP0903765B1 (de) 2002-11-13
DE69809359D1 (de) 2002-12-19
ATE227883T1 (de) 2002-11-15
EP0903765A3 (de) 1999-11-17

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