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GB2003613A - Improvements in the testing of electric cables - Google Patents

Improvements in the testing of electric cables

Info

Publication number
GB2003613A
GB2003613A GB7836161A GB7836161A GB2003613A GB 2003613 A GB2003613 A GB 2003613A GB 7836161 A GB7836161 A GB 7836161A GB 7836161 A GB7836161 A GB 7836161A GB 2003613 A GB2003613 A GB 2003613A
Authority
GB
United Kingdom
Prior art keywords
cable
recorder
manufacture
capacitance
cables
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Withdrawn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
GB7836161A
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.)
DELTA ENFIELD CABLES Ltd
Original Assignee
DELTA ENFIELD CABLES 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
Application filed by DELTA ENFIELD CABLES Ltd filed Critical DELTA ENFIELD CABLES Ltd
Priority to GB7836161A priority Critical patent/GB2003613A/en
Publication of GB2003613A publication Critical patent/GB2003613A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
    • G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
    • G01B7/08—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means
    • G01B7/085—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using capacitive means for measuring thickness of coating
    • 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
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • G01R31/59—Testing of lines, cables or conductors while the cable continuously passes the testing apparatus, e.g. during manufacture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The invention relates to the manufacture of cables, and is of particular utility in the manufacture of coaxial cables. To measure the consistency of the thickness of an extruded dielectric material (14) over the central conductor (10) of a part-formed coaxial cable (16), the cable is passed between capacitance plates (22, 24) optionally in a water bath (18). The capacitance between the plates is measured by network (30), and the reactive component of the output is recorded in a recorder (52). The recorder is periodically replayed at a higher speed and the frequency spectrum analysed and displayed on an oscilloscope (58). If the part- formed cable is satisfactory, the outer conductor can then be added. <IMAGE>
GB7836161A 1977-06-10 1978-09-08 Improvements in the testing of electric cables Withdrawn GB2003613A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7836161A GB2003613A (en) 1977-06-10 1978-09-08 Improvements in the testing of electric cables

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2440677 1977-06-10
GB7836161A GB2003613A (en) 1977-06-10 1978-09-08 Improvements in the testing of electric cables

Publications (1)

Publication Number Publication Date
GB2003613A true GB2003613A (en) 1979-03-14

Family

ID=26257094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7836161A Withdrawn GB2003613A (en) 1977-06-10 1978-09-08 Improvements in the testing of electric cables

Country Status (1)

Country Link
GB (1) GB2003613A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5426373A (en) * 1992-09-30 1995-06-20 The United States Of America As Represented By The Secretary Of The Navy Two electrode device for determining electrical properties of a material on a metal substratum
EP0679863A1 (en) * 1994-04-08 1995-11-02 Sikora Industrieelektronik Gmbh Device for measuring the position of a conductor of a cable within a cable covering
DE19809890C1 (en) * 1998-03-07 1999-11-11 Sikora Industrieelektronik Device for measuring the capacitance of electrical wires
GB2358928A (en) * 2000-02-04 2001-08-08 Beta Lasermike Ltd A system for monitoring fluctuations in the thickness of a cable insulating sheath
US7129711B2 (en) 2004-03-18 2006-10-31 Sikora Ag Device for detecting interferences or interruptions of the inner fields smoothing layer of medium or high voltage cables

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5426373A (en) * 1992-09-30 1995-06-20 The United States Of America As Represented By The Secretary Of The Navy Two electrode device for determining electrical properties of a material on a metal substratum
EP0679863A1 (en) * 1994-04-08 1995-11-02 Sikora Industrieelektronik Gmbh Device for measuring the position of a conductor of a cable within a cable covering
DE19809890C1 (en) * 1998-03-07 1999-11-11 Sikora Industrieelektronik Device for measuring the capacitance of electrical wires
US6498499B1 (en) 1998-03-07 2002-12-24 Sikora Industrieelektronik Gmbh Device for measuring the capacitance of electrical wires
GB2358928A (en) * 2000-02-04 2001-08-08 Beta Lasermike Ltd A system for monitoring fluctuations in the thickness of a cable insulating sheath
WO2001057544A1 (en) * 2000-02-04 2001-08-09 Beta Lasermike Ltd. Capacitance monitoring systems
GB2358928B (en) * 2000-02-04 2004-03-03 Beta Lasermike Ltd Capacitance monitoring systems
US6836124B2 (en) 2000-02-04 2004-12-28 Beta Lasermike Limited Capacitance monitoring systems
US7129711B2 (en) 2004-03-18 2006-10-31 Sikora Ag Device for detecting interferences or interruptions of the inner fields smoothing layer of medium or high voltage cables
DE102004013606B4 (en) * 2004-03-18 2012-07-26 Sikora Ag Device for measuring disturbances or interruptions in the inner smoothing layer in medium and high voltage cables

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)