GB1397935A - Method of testing oil-filled cables - Google Patents

Method of testing oil-filled cables

Info

Publication number
GB1397935A
GB1397935A GB2947372A GB2947372A GB1397935A GB 1397935 A GB1397935 A GB 1397935A GB 2947372 A GB2947372 A GB 2947372A GB 2947372 A GB2947372 A GB 2947372A GB 1397935 A GB1397935 A GB 1397935A
Authority
GB
United Kingdom
Prior art keywords
oil
gases
sample
cables
syringe
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
GB2947372A
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.)
Fujikura Ltd
Fujikura Cable Works Ltd
Original Assignee
Fujikura Ltd
Fujikura Cable Works 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 JP4636671A external-priority patent/JPS527550B1/ja
Priority claimed from JP4636871A external-priority patent/JPS527552B1/ja
Priority claimed from JP4636571A external-priority patent/JPS527549B1/ja
Priority claimed from JP4636771A external-priority patent/JPS527551B1/ja
Priority claimed from JP4636471A external-priority patent/JPS527548B1/ja
Application filed by Fujikura Ltd, Fujikura Cable Works Ltd filed Critical Fujikura Ltd
Publication of GB1397935A publication Critical patent/GB1397935A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
    • G01N33/2841—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel gas in oil, e.g. hydrogen in insulating oil
    • 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

Abstract

1397935 Testing oil from o.f. cables FUJIKURA CABLE WORKS Ltd 23 June 1972 [28 June 1971 #5 ] 29473/72 Heading G1B Gases dissolved in insulating oil from oil-filled (o.f.) cables are quantitatively analyzed to detect abnormalities in the oil by a method comprising sampling oil from an o.f. cable 10 already laid, without exposing the oil to the air, collecting in the space above the oil in thermostatted receptacle .21 (Fig. 2) the gases evolved from the oil at a vacuum of less than 10<SP>-2</SP> mm Hg and quantitatively analyzing the collected gases, for example by collecting a sample of the gases in sampler 17 and analyzing the sample by gas chromatography. The oil may be sampled using the device of Fig. 1 with a syringe without its needle connected at 14, sampling tube 11 preferably having an oil shut-off valve (not shown). The sample may then be allowed to flow from the syringe into evacuated receptacle 21.
GB2947372A 1971-06-28 1972-06-23 Method of testing oil-filled cables Expired GB1397935A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP4636671A JPS527550B1 (en) 1971-06-28 1971-06-28
JP4636871A JPS527552B1 (en) 1971-06-28 1971-06-28
JP4636571A JPS527549B1 (en) 1971-06-28 1971-06-28
JP4636771A JPS527551B1 (en) 1971-06-28 1971-06-28
JP4636471A JPS527548B1 (en) 1971-06-28 1971-06-28

Publications (1)

Publication Number Publication Date
GB1397935A true GB1397935A (en) 1975-06-18

Family

ID=27522543

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2947372A Expired GB1397935A (en) 1971-06-28 1972-06-23 Method of testing oil-filled cables

Country Status (1)

Country Link
GB (1) GB1397935A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2363111A1 (en) * 1976-08-30 1978-03-24 Gen Electric Gas chromatographic measurement of dissolved gases in dielectric fluid - uses appts. having low pressure gas extraction chamber, fluid sampling device and control valve network
US4502320A (en) * 1981-07-27 1985-03-05 Hitachi, Ltd. Method and apparatus for diagnosing oil-filled electric apparatus
WO1999067633A1 (en) * 1998-06-19 1999-12-29 Siemens Aktiengesellschaft Gas extraction facility
CN113588488A (en) * 2021-09-29 2021-11-02 国网天津市电力公司电力科学研究院 Cable defect detection method and device, terminal equipment and storage medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2363111A1 (en) * 1976-08-30 1978-03-24 Gen Electric Gas chromatographic measurement of dissolved gases in dielectric fluid - uses appts. having low pressure gas extraction chamber, fluid sampling device and control valve network
US4502320A (en) * 1981-07-27 1985-03-05 Hitachi, Ltd. Method and apparatus for diagnosing oil-filled electric apparatus
WO1999067633A1 (en) * 1998-06-19 1999-12-29 Siemens Aktiengesellschaft Gas extraction facility
CN113588488A (en) * 2021-09-29 2021-11-02 国网天津市电力公司电力科学研究院 Cable defect detection method and device, terminal equipment and storage medium
CN113588488B (en) * 2021-09-29 2022-01-18 国网天津市电力公司电力科学研究院 Cable defect detection method and device, terminal equipment and storage medium

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years