EP0204873A1 - Überwachungsschaltung für ein Schaltgerät - Google Patents

Überwachungsschaltung für ein Schaltgerät Download PDF

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Publication number
EP0204873A1
EP0204873A1 EP85304097A EP85304097A EP0204873A1 EP 0204873 A1 EP0204873 A1 EP 0204873A1 EP 85304097 A EP85304097 A EP 85304097A EP 85304097 A EP85304097 A EP 85304097A EP 0204873 A1 EP0204873 A1 EP 0204873A1
Authority
EP
European Patent Office
Prior art keywords
circuit breaker
monitor
current
quantum
recording
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Withdrawn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
EP85304097A
Other languages
English (en)
French (fr)
Inventor
Ronald Erwin Niemack
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.)
CONTROL LOGIC Pty Ltd
Original Assignee
CONTROL LOGIC Pty 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
Priority to ZA844116A priority Critical patent/ZA844116B/xx
Application filed by CONTROL LOGIC Pty Ltd filed Critical CONTROL LOGIC Pty Ltd
Priority to EP85304097A priority patent/EP0204873A1/de
Publication of EP0204873A1 publication Critical patent/EP0204873A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator

Definitions

  • THIS INVENTION relates to a monitor for breakers for electric circuits.
  • Electric circuit breakers generally have a specified maximum current loading which should not be exceeded before they are maintained. This loading is given by their manufacturers in terms of amperes in a particular time, and it is intended that this figure should be used as a guide for the user in determining when the circuit breaker requires maintenance.
  • a circuit breaker monitor comprising current measuring means adapted to measure the quantum of current which causes the circuit breaker to trip out, and recording means adapted to record the measured quantum.
  • a method of operating an electrical circuit breaker monitor which is characterised by measuring, by using a current measuring means, the quantum of current which causes the circuit breaker to trip out, and recording the measured quantum.
  • a feature of the invention provides for the measuring means to be a peak detector and the recording means to be a counter, adapted to record accumulated numeric counts proportional to the magnitude of the detected peak, and preferably counts for successive peaks accumulated in a running total.
  • an input line 1 passes through a circuit breaker indicated diagrammatically by numeral 2 and on to a variety of user positions from numeral 3.
  • a measuring means 4 is located in the line 1 prior to the circuit breaker 2.
  • the measuring means 4 is a peak detector located in series in the input line, and will detect peaks of currents of a magnitude which would cause the circuit breaker to trip.
  • a recorder 6 Connected via a line 5 to the peak detector, is a recorder 6, which comprises a counter with an analogue to digital converter, so that a count will be given in accordance with the magnitude of the peak measured by the peak detector 4. This count will be displayed on a display output 7, and each time the counter counts further magnitudes of peaks, the output play 7 will be updated to maintain a running total.
  • the invention provides useful apparatus for assisting in the maintenance of circuit breakers.
  • the current measuring means need not be a peak detector, and may measure current as a function of time
  • the recording means could be a drum graph or the like.

Landscapes

  • Testing Electric Properties And Detecting Electric Faults (AREA)
EP85304097A 1983-03-03 1985-06-10 Überwachungsschaltung für ein Schaltgerät Withdrawn EP0204873A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ZA844116A ZA844116B (de) 1983-03-03 1984-05-30
EP85304097A EP0204873A1 (de) 1985-06-10 1985-06-10 Überwachungsschaltung für ein Schaltgerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85304097A EP0204873A1 (de) 1985-06-10 1985-06-10 Überwachungsschaltung für ein Schaltgerät

Publications (1)

Publication Number Publication Date
EP0204873A1 true EP0204873A1 (de) 1986-12-17

Family

ID=8194256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85304097A Withdrawn EP0204873A1 (de) 1983-03-03 1985-06-10 Überwachungsschaltung für ein Schaltgerät

Country Status (1)

Country Link
EP (1) EP0204873A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327692A1 (de) * 1988-01-28 1989-08-16 Licentia Patent-Verwaltungs-GmbH Benutzungsführungsanzeige für Leistungsschalter
JP2012186960A (ja) * 2011-03-07 2012-09-27 Toshiba Corp 監視装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1936552A1 (de) * 1969-07-18 1971-03-18 Bbc Brown Boveri & Cie Messverfahren zur Messung des Schaltstueckabbrandes von Hochspannungsleistungsschaltern
US3678372A (en) * 1970-04-07 1972-07-18 Westinghouse Electric Corp Portable circuit breaker tester for calibrating a circuit breaker over a wide range of current
DE2640921A1 (de) * 1976-09-08 1978-03-09 Siemens Ag Vakuumschaltgeraet mit einer einrichtung zur ueberwachung der schaltstuecke
DE2727378A1 (de) * 1977-06-15 1979-01-04 Siemens Ag Einrichtung zur kontrolle der betriebsfaehigkeit von schaltgeraeten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1936552A1 (de) * 1969-07-18 1971-03-18 Bbc Brown Boveri & Cie Messverfahren zur Messung des Schaltstueckabbrandes von Hochspannungsleistungsschaltern
US3678372A (en) * 1970-04-07 1972-07-18 Westinghouse Electric Corp Portable circuit breaker tester for calibrating a circuit breaker over a wide range of current
DE2640921A1 (de) * 1976-09-08 1978-03-09 Siemens Ag Vakuumschaltgeraet mit einer einrichtung zur ueberwachung der schaltstuecke
DE2727378A1 (de) * 1977-06-15 1979-01-04 Siemens Ag Einrichtung zur kontrolle der betriebsfaehigkeit von schaltgeraeten

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0327692A1 (de) * 1988-01-28 1989-08-16 Licentia Patent-Verwaltungs-GmbH Benutzungsführungsanzeige für Leistungsschalter
JP2012186960A (ja) * 2011-03-07 2012-09-27 Toshiba Corp 監視装置

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Inventor name: NIEMACK, RONALD ERWIN