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FR2592521A1 - Fault current switch eliminating arcing - Google Patents

Fault current switch eliminating arcing

Info

Publication number
FR2592521A1
FR2592521A1 FR8519299A FR8519299A FR2592521A1 FR 2592521 A1 FR2592521 A1 FR 2592521A1 FR 8519299 A FR8519299 A FR 8519299A FR 8519299 A FR8519299 A FR 8519299A FR 2592521 A1 FR2592521 A1 FR 2592521A1
Authority
FR
France
Prior art keywords
resistance
fault current
current switch
voltage
pref
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Withdrawn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
FR8519299A
Other languages
French (fr)
Inventor
Edward Keith Howell
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.)
General Electric Co
Original Assignee
General Electric Co
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 to DE19853544647 priority Critical patent/DE3544647A1/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to FR8519299A priority patent/FR2592521A1/en
Publication of FR2592521A1 publication Critical patent/FR2592521A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/161—Variable impedances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/16—Impedances connected with contacts
    • H01H33/161—Variable impedances
    • H01H2033/163—Variable impedances using PTC elements

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Thermistors And Varistors (AREA)

Abstract

The fault current switch has a pair of separable contacts (13,14) and a resistance (22) with a positive temp coefficient coupled in parallel with the latter, for providing a contact bridge upon initial separation of the contacts (13,14). A voltage-dependant resistance (23) is pref connected in parallel with the positive temp coefficient resistance (22) for providing a shunt path when the voltage across the latter resistance (22) reaches a given value. The voltage-dependant resistance (23) is pref formed of silicon carbide or a metal oxide.
FR8519299A 1985-12-27 1985-12-27 Fault current switch eliminating arcing Withdrawn FR2592521A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19853544647 DE3544647A1 (en) 1985-12-27 1985-12-17 Fault current circuit breaker
FR8519299A FR2592521A1 (en) 1985-12-27 1985-12-27 Fault current switch eliminating arcing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8519299A FR2592521A1 (en) 1985-12-27 1985-12-27 Fault current switch eliminating arcing

Publications (1)

Publication Number Publication Date
FR2592521A1 true FR2592521A1 (en) 1987-07-03

Family

ID=9326235

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8519299A Withdrawn FR2592521A1 (en) 1985-12-27 1985-12-27 Fault current switch eliminating arcing

Country Status (2)

Country Link
DE (1) DE3544647A1 (en)
FR (1) FR2592521A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657194A1 (en) * 1990-01-17 1991-07-19 Alsthom Gec REACTANCE CIRCUIT BREAKER WITH LOW OVERVOLTAGES.

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4243314C2 (en) * 1992-12-21 1998-08-20 Asea Brown Boveri Current limiting switch
US5737160A (en) * 1995-09-14 1998-04-07 Raychem Corporation Electrical switches comprising arrangement of mechanical switches and PCT device
US5666254A (en) * 1995-09-14 1997-09-09 Raychem Corporation Voltage sensing overcurrent protection circuit
US5864458A (en) * 1995-09-14 1999-01-26 Raychem Corporation Overcurrent protection circuits comprising combinations of PTC devices and switches
DE102008013448B4 (en) * 2007-10-30 2018-10-11 Dehn + Söhne Gmbh + Co. Kg Surge arrester with a housing and at least one varistor as a diverting element
DE102011056577C5 (en) * 2011-12-19 2015-02-19 Sma Solar Technology Ag Circuit arrangement for suppressing a occurring during a switching arc

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1188811A (en) * 1957-12-19 1959-09-25 Lorraine Carbone Method for increasing the voltage coefficient of varistors, and its applications
FR1226309A (en) * 1958-06-04 1960-07-11 Siemens Ag Variable resistor depending on the voltage
US3249810A (en) * 1962-11-20 1966-05-03 Westinghouse Electric Corp Circuit interrupting apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1188811A (en) * 1957-12-19 1959-09-25 Lorraine Carbone Method for increasing the voltage coefficient of varistors, and its applications
FR1226309A (en) * 1958-06-04 1960-07-11 Siemens Ag Variable resistor depending on the voltage
US3249810A (en) * 1962-11-20 1966-05-03 Westinghouse Electric Corp Circuit interrupting apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657194A1 (en) * 1990-01-17 1991-07-19 Alsthom Gec REACTANCE CIRCUIT BREAKER WITH LOW OVERVOLTAGES.
EP0437838A1 (en) * 1990-01-17 1991-07-24 Gec Alsthom Sa Reactance circuit breaker for low excess voltage

Also Published As

Publication number Publication date
DE3544647A1 (en) 1987-06-19

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Legal Events

Date Code Title Description
ST Notification of lapse