FR2269188A1 - Power cct. breaker with two secondary trips - one trip being of electrodynamic type whose natural and breaker time cycle is smaller than that of second trip - Google Patents

Power cct. breaker with two secondary trips - one trip being of electrodynamic type whose natural and breaker time cycle is smaller than that of second trip

Info

Publication number
FR2269188A1
FR2269188A1 FR7507611A FR7507611A FR2269188A1 FR 2269188 A1 FR2269188 A1 FR 2269188A1 FR 7507611 A FR7507611 A FR 7507611A FR 7507611 A FR7507611 A FR 7507611A FR 2269188 A1 FR2269188 A1 FR 2269188A1
Authority
FR
France
Prior art keywords
trip
breaker
trips
smaller
type whose
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Withdrawn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
FR7507611A
Other languages
French (fr)
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.)
Siemens AG
Original Assignee
Siemens AG
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 DE19742420465 external-priority patent/DE2420465C3/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of FR2269188A1 publication Critical patent/FR2269188A1/en
Withdrawn legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/021—Details concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

The second secondary trip of the power circuit breaker takes over the tripping function when the first secondary trip fails. This first secondary trip is of electrodynamic type whose natural cycle, together with that of the power circuit breaker, is smaller than the natural cycle of the second secondary trip. Preferably, however, both secondary trips are triggered simultaneously. The system may contain two capacitors, charged by an operating voltage source, which may be sequentially discharged across the excitation winding of the electrodynamic trip. A thyristor and a bistable relay with two opening contacts may be series-connected to the excitation coil, the opening relay contact being each arranged between a capacitor and the excitation coil and operated in a push-pull mode.
FR7507611A 1974-04-24 1975-03-11 Power cct. breaker with two secondary trips - one trip being of electrodynamic type whose natural and breaker time cycle is smaller than that of second trip Withdrawn FR2269188A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742420465 DE2420465C3 (en) 1974-04-24 Electrical circuit breaker with a first and a second secondary release

Publications (1)

Publication Number Publication Date
FR2269188A1 true FR2269188A1 (en) 1975-11-21

Family

ID=5914135

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7507611A Withdrawn FR2269188A1 (en) 1974-04-24 1975-03-11 Power cct. breaker with two secondary trips - one trip being of electrodynamic type whose natural and breaker time cycle is smaller than that of second trip

Country Status (4)

Country Link
JP (1) JPS5712491B2 (en)
CH (1) CH578248A5 (en)
FR (1) FR2269188A1 (en)
SE (1) SE7504687L (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8902169A (en) * 1989-08-25 1991-03-18 H A Hoeflake Fa Circuit protection system for electrical distribution cables - protects long cables carrying relatively small normal currents by responding to heat and magnetic fields

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6475744A (en) * 1987-09-14 1989-03-22 Shin Meiwa Ind Co Ltd Drainage system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8902169A (en) * 1989-08-25 1991-03-18 H A Hoeflake Fa Circuit protection system for electrical distribution cables - protects long cables carrying relatively small normal currents by responding to heat and magnetic fields

Also Published As

Publication number Publication date
DE2420465B2 (en) 1976-04-08
SE7504687L (en) 1975-10-27
JPS50146879A (en) 1975-11-25
DE2420465A1 (en) 1975-10-30
JPS5712491B2 (en) 1982-03-11
CH578248A5 (en) 1976-07-30

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Legal Events

Date Code Title Description
ST Notification of lapse