GB1273432A - Apparatus for locating a short-circuit in a d.c. wiring network - Google Patents

Apparatus for locating a short-circuit in a d.c. wiring network

Info

Publication number
GB1273432A
GB1273432A GB3637269A GB3637269A GB1273432A GB 1273432 A GB1273432 A GB 1273432A GB 3637269 A GB3637269 A GB 3637269A GB 3637269 A GB3637269 A GB 3637269A GB 1273432 A GB1273432 A GB 1273432A
Authority
GB
United Kingdom
Prior art keywords
scr
pulses
wiring network
locating
short
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.)
Expired
Application number
GB3637269A
Inventor
Kazuo Yamada
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1273432A publication Critical patent/GB1273432A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H02H3/046—Signalling the blowing of a fuse
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Circuits Of Receivers In General (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1,273,432. Keying oscillators. K. YAMADA. 18 July, 1969 [19 July, 1968; 29 Oct., 1968], No. 36372/69. Heading H3R. [Also in Division G1] The keying of an audio frequency Colpitts oscillator 37 in response to pulses from a detector 31 indicating the presence of pulses in a wiring network (see Division G1) is controlled by an SCR 64 to whose gate the pulses, after amplification and clipping, are applied. The SCR is in the emitter path of an emitter follower TR9 to whose base the output of the oscillator is applied. When the SCR is triggered the audio frequency is passed to an amplifier 38 and thence to loud-speaker 39 to indicate the presence of the triggering pulse.
GB3637269A 1968-07-19 1969-07-18 Apparatus for locating a short-circuit in a d.c. wiring network Expired GB1273432A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5147868 1968-07-19
JP7872468 1968-10-29

Publications (1)

Publication Number Publication Date
GB1273432A true GB1273432A (en) 1972-05-10

Family

ID=26392018

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3637269A Expired GB1273432A (en) 1968-07-19 1969-07-18 Apparatus for locating a short-circuit in a d.c. wiring network

Country Status (3)

Country Link
DE (1) DE1936711C3 (en)
FR (1) FR2013294A1 (en)
GB (1) GB1273432A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014200375A1 (en) 2013-06-09 2014-12-18 Active Space Technologies, Actividades Aeroespaciais, Lda. Method and system for monitoring electrical wire aging

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014200375A1 (en) 2013-06-09 2014-12-18 Active Space Technologies, Actividades Aeroespaciais, Lda. Method and system for monitoring electrical wire aging

Also Published As

Publication number Publication date
DE1936711B2 (en) 1973-03-29
FR2013294A1 (en) 1970-03-27
DE1936711C3 (en) 1973-10-11
DE1936711A1 (en) 1970-02-26

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees