GB1162811A - Improvements in or relating to Apparatus for Locating and Identifying Conductors or Faults in Conductors - Google Patents

Improvements in or relating to Apparatus for Locating and Identifying Conductors or Faults in Conductors

Info

Publication number
GB1162811A
GB1162811A GB22254/65A GB2225465A GB1162811A GB 1162811 A GB1162811 A GB 1162811A GB 22254/65 A GB22254/65 A GB 22254/65A GB 2225465 A GB2225465 A GB 2225465A GB 1162811 A GB1162811 A GB 1162811A
Authority
GB
United Kingdom
Prior art keywords
cable
pulses
capacitor
thyristor
conductor
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
GB22254/65A
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.)
London Electricity Board
Original Assignee
London Electricity Board
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 London Electricity Board filed Critical London Electricity Board
Priority to GB22254/65A priority Critical patent/GB1162811A/en
Publication of GB1162811A publication Critical patent/GB1162811A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G01R29/085—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning for detecting presence or location of electric lines or cables
    • 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)
  • Electromagnetism (AREA)
  • Locating Faults (AREA)

Abstract

1,162,811. Locating cables or cable faults. A. J. BAGGOTT. Aug. 25, 1966 [May 25, 1965], No. 22254/65. Heading G1U. Apparatus for locating or identifying a conductor or a fault in a conductor consists of a transmitter circuit for generating and transmitting pulses along the conductor under the control of a switch device whose operation is synchronized in relation to the phase of an A. C. supply, the pulses being grouped in a code distinguishable from noise &c. and detecting arrangements to detect the pulses in the conductor, to enable the conductor or a fault therein to be identified or located. A cable under test 11, 12 is supplied with A.C. at its input 10. This A.C. also supplies a scaler and squaring circuit 15 and phase control 16, the output from which fires a thyristor 19 to connect a capacitor 17 across the cable lines at times predetermined relative to the supply frequency. The capacitor charging current distorts the A. C. waveform, so that a pulse is effectively applied to the cable. By appropriate connection of the scaler and phasing circuits, a coded set of pulses may be so applied to the cable, (see Division H3). The arrangement of capacitor and thyristor may be varied in accordance with the system and type of fault under test. A series arrangement of capacitor, thyristor and diode, with resistors in parallel with these components, is used to provide sharply peaked pulses for locating a healthy cable (Fig. 8). To determine the position of a short circuit in the cable, the capacitor is connected directly across the supply, and can be switched by the thyristor to discharge into the cable (Fig. 9). For an open circuit cable, the charged capacitor is discharged into a resistor connected across the cable, by switching the thyristor Fig. 10 (not shown). The detecting arrangement for sensing the coded pulses in the cable incorporates a search coil, filter and transistor amplifier. The output from this arrangement may be fed to headphones or a visual indicator.
GB22254/65A 1965-05-25 1965-05-25 Improvements in or relating to Apparatus for Locating and Identifying Conductors or Faults in Conductors Expired GB1162811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB22254/65A GB1162811A (en) 1965-05-25 1965-05-25 Improvements in or relating to Apparatus for Locating and Identifying Conductors or Faults in Conductors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22254/65A GB1162811A (en) 1965-05-25 1965-05-25 Improvements in or relating to Apparatus for Locating and Identifying Conductors or Faults in Conductors

Publications (1)

Publication Number Publication Date
GB1162811A true GB1162811A (en) 1969-08-27

Family

ID=10176399

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22254/65A Expired GB1162811A (en) 1965-05-25 1965-05-25 Improvements in or relating to Apparatus for Locating and Identifying Conductors or Faults in Conductors

Country Status (1)

Country Link
GB (1) GB1162811A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074188A (en) * 1975-08-01 1978-02-14 Testline Instruments, Inc. Low impedance fault detection system and method
US4642556A (en) * 1981-02-19 1987-02-10 Pasar, Inc. Tracing electrical conductors by high-frequency constant-energy-content pulse loading
US4906938A (en) * 1988-08-16 1990-03-06 Zenith Electronics Corporation Power circuit locater
US5497094A (en) * 1994-01-21 1996-03-05 George; David L. Electrical circuit identification means
US5760591A (en) * 1992-06-18 1998-06-02 Shin-Ichiro Matsuda Method of and apparatus for determining an electric wiring state
WO1999005536A1 (en) * 1997-07-25 1999-02-04 Ntc, Inc. Electrical circuit interrupter device locator
US6054931A (en) * 1997-09-11 2000-04-25 Ntc, Inc. Self-identifying circuit breaker
US6163144A (en) * 1998-07-20 2000-12-19 Applied Power Inc. Electrical circuit tracing apparatus using modulated tracing signal
US6392395B2 (en) 1999-10-19 2002-05-21 Robotics Technologies, Inc. Automatic circuit breaker detector
US7157896B2 (en) 2004-08-11 2007-01-02 A. W. Sperry Instruments, Inc. Device for locating and identifying circuit breakers
CN101968516A (en) * 2010-08-26 2011-02-09 刘家发 Electromagnetic radiation detection device
ES2423838R1 (en) * 2011-12-30 2013-10-07 Seat Sa DEVICE FOR CHECKING CABLES
EP2668514A1 (en) * 2011-01-26 2013-12-04 MS-Technik Mess- und Regelungstechnik GmbH & Co. KG Method and device for locating a fault
EP3301460A1 (en) * 2016-09-30 2018-04-04 ABB Schweiz AG A catenary line test device for a main circuit breaker of an ac catenary line system

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074188A (en) * 1975-08-01 1978-02-14 Testline Instruments, Inc. Low impedance fault detection system and method
US4642556A (en) * 1981-02-19 1987-02-10 Pasar, Inc. Tracing electrical conductors by high-frequency constant-energy-content pulse loading
US4906938A (en) * 1988-08-16 1990-03-06 Zenith Electronics Corporation Power circuit locater
US5760591A (en) * 1992-06-18 1998-06-02 Shin-Ichiro Matsuda Method of and apparatus for determining an electric wiring state
US5497094A (en) * 1994-01-21 1996-03-05 George; David L. Electrical circuit identification means
WO1999005536A1 (en) * 1997-07-25 1999-02-04 Ntc, Inc. Electrical circuit interrupter device locator
US5969516A (en) * 1997-07-25 1999-10-19 Ntc, Inc. Electrical circuit interrupter device locator
US6054931A (en) * 1997-09-11 2000-04-25 Ntc, Inc. Self-identifying circuit breaker
US6163144A (en) * 1998-07-20 2000-12-19 Applied Power Inc. Electrical circuit tracing apparatus using modulated tracing signal
US6392395B2 (en) 1999-10-19 2002-05-21 Robotics Technologies, Inc. Automatic circuit breaker detector
US7157896B2 (en) 2004-08-11 2007-01-02 A. W. Sperry Instruments, Inc. Device for locating and identifying circuit breakers
CN101968516A (en) * 2010-08-26 2011-02-09 刘家发 Electromagnetic radiation detection device
EP2668514A1 (en) * 2011-01-26 2013-12-04 MS-Technik Mess- und Regelungstechnik GmbH & Co. KG Method and device for locating a fault
EP2668514B1 (en) * 2011-01-26 2018-08-15 MS-Technik Mess- und Regelungstechnik GmbH & Co. KG Method and device for locating a fault
ES2423838R1 (en) * 2011-12-30 2013-10-07 Seat Sa DEVICE FOR CHECKING CABLES
EP3301460A1 (en) * 2016-09-30 2018-04-04 ABB Schweiz AG A catenary line test device for a main circuit breaker of an ac catenary line system

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PE Patent expired