GB1322905A - Electric cables - Google Patents

Electric cables

Info

Publication number
GB1322905A
GB1322905A GB1322905DA GB1322905A GB 1322905 A GB1322905 A GB 1322905A GB 1322905D A GB1322905D A GB 1322905DA GB 1322905 A GB1322905 A GB 1322905A
Authority
GB
United Kingdom
Prior art keywords
aluminium
sheath
cable
insulated
polyvinyl chloride
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
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.)
Pyrotenax Ltd
Original Assignee
Pyrotenax 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 claimed from GB49575/68A external-priority patent/GB1215388A/en
Application filed by Pyrotenax Ltd filed Critical Pyrotenax Ltd
Publication of GB1322905A publication Critical patent/GB1322905A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/181—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for cables

Abstract

1322905 Electric cables PYROTENAX Ltd 19 April 1971 [27 Feb 1970] 9688/70 Addition to 1215388 Heading H1A An electric power or communication cable having at least one insulated core of aluminium or aluminium based alloy and a plastics sheath comprises a mineral insulated cable 10 which has a sheath 14 of aluminium or aluminium based alloy. The mineral insulated cable may be connected to a detector to indicate when damage to the cable has allowed moisture to enter the sheath. The main cable may include armouring, concentric screen or, as shown, neutral conductor 5 comprising wires, one or more of which may be replaced by mineralinsulated cables 10. Three aluminium conductors 1 each insulated by polyvinyl chloride 2 are laid up together on a plastics preform 3 and covered by a polyvinyl chloride covering 4. Concentric neutral conductor 5 comprises aluminium strips 6 and four circumferentially spaced flattened mineral insulated cables 10 helically laid over covering 4. Each mineral insulated cable has an aluminium conductor 11 embedded in and insulated from an aluminium sheath 14 by compacted magnesium oxide 12. An extruded polyvinyl chloride sheath 7 covers the neutral conductor 5.
GB1322905D 1968-10-18 1970-02-27 Electric cables Expired GB1322905A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB49575/68A GB1215388A (en) 1968-10-18 1968-10-18 Improvements in electric cables
GB968870 1970-02-27

Publications (1)

Publication Number Publication Date
GB1322905A true GB1322905A (en) 1973-07-11

Family

ID=26243103

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1322905D Expired GB1322905A (en) 1968-10-18 1970-02-27 Electric cables

Country Status (3)

Country Link
DE (1) DE2109349A1 (en)
FR (1) FR2081056B2 (en)
GB (1) GB1322905A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104575831A (en) * 2015-01-28 2015-04-29 沈阳长城电缆实业有限公司 Intelligent and environment-friendly type power cable with aluminum alloy cores
CN109855807A (en) * 2018-12-05 2019-06-07 江苏中矿大正表面工程技术有限公司 A kind of main cable protection selects test platform and its test method with sealant ratio

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579184C (en) * 1931-04-08 1933-06-22 Berthold Jenewein Dr Ing Moisture indicator for insulation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104575831A (en) * 2015-01-28 2015-04-29 沈阳长城电缆实业有限公司 Intelligent and environment-friendly type power cable with aluminum alloy cores
CN109855807A (en) * 2018-12-05 2019-06-07 江苏中矿大正表面工程技术有限公司 A kind of main cable protection selects test platform and its test method with sealant ratio

Also Published As

Publication number Publication date
FR2081056A2 (en) 1971-11-26
FR2081056B2 (en) 1976-07-23
DE2109349A1 (en) 1971-09-09

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Legal Events

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