GB646392A - Improvements in electric measuring apparatus short or open circuits in wires, cables, or other sets of conductors - Google Patents

Improvements in electric measuring apparatus short or open circuits in wires, cables, or other sets of conductors

Info

Publication number
GB646392A
GB646392A GB3162447A GB3162447A GB646392A GB 646392 A GB646392 A GB 646392A GB 3162447 A GB3162447 A GB 3162447A GB 3162447 A GB3162447 A GB 3162447A GB 646392 A GB646392 A GB 646392A
Authority
GB
United Kingdom
Prior art keywords
cable
scale
potentiometer
tapping
length
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
GB3162447A
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
Priority to GB3162447A priority Critical patent/GB646392A/en
Publication of GB646392A publication Critical patent/GB646392A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Measurement Of Resistance Or Impedance (AREA)
  • Locating Faults (AREA)

Abstract

646,392. Directing, indicating, and locating faults ; capacitance and resistance measurements. GREENE, T. Nov. 29, 1947, No. 31624. [Class 37] Relates particularly to a system for locating faults in twin cables by connecting one cable 12 to a potentiometer 16 and forming a bridge by connecting the other cable 11 to a variable tapping 20, on the potentiometer 16 so that the location of a short circuit 10, or a break is indicated by the position of the tapping 20 at balance. According to the invention, the potentiometer 16 is associated with a scale holder 23 marked with a plurality of linear scales, and the length of the potentiometer is variable by adjusting contact 18 so that, e.g. the scale appropriate to the length of cable can be selected, e.g. by rotation of the holder, and the tapping 18 adjusted so that its indicator 21 lies on the selected scale at a marking corresponding to the length of the cable. As shown in Fig. 3, the scales 24, 25, 26, &c have the same zero, and the markings on each scale corresponding to the maximum of the preceding scale lie on a straight line 27. Where one cable is broken, the bridge indicates the ratio of the total capacities between the two broken lengths and the unbroken cable, Fig. 2 (not shown). The invention is applicable generally to measuring resistance or capacitance.
GB3162447A 1947-11-29 1947-11-29 Improvements in electric measuring apparatus short or open circuits in wires, cables, or other sets of conductors Expired GB646392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3162447A GB646392A (en) 1947-11-29 1947-11-29 Improvements in electric measuring apparatus short or open circuits in wires, cables, or other sets of conductors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3162447A GB646392A (en) 1947-11-29 1947-11-29 Improvements in electric measuring apparatus short or open circuits in wires, cables, or other sets of conductors

Publications (1)

Publication Number Publication Date
GB646392A true GB646392A (en) 1950-11-22

Family

ID=10325942

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3162447A Expired GB646392A (en) 1947-11-29 1947-11-29 Improvements in electric measuring apparatus short or open circuits in wires, cables, or other sets of conductors

Country Status (1)

Country Link
GB (1) GB646392A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5015958A (en) 1983-06-30 1991-05-14 Raychem Corporation Elongate sensors comprising conductive polymers, and methods and apparatus using such sensors
US5235286A (en) 1985-06-12 1993-08-10 Raychem Corporation Method for detecting and obtaining information about changers in variables
US5382909A (en) 1983-06-30 1995-01-17 Raychem Corporation Method for detecting and obtaining information about changes in variables

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5015958A (en) 1983-06-30 1991-05-14 Raychem Corporation Elongate sensors comprising conductive polymers, and methods and apparatus using such sensors
US5382909A (en) 1983-06-30 1995-01-17 Raychem Corporation Method for detecting and obtaining information about changes in variables
US5235286A (en) 1985-06-12 1993-08-10 Raychem Corporation Method for detecting and obtaining information about changers in variables

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