FR2315752A1 - Thermal overload protection for LV cable - has fuse wire installed inside cable which is monitored for continuity - Google Patents

Thermal overload protection for LV cable - has fuse wire installed inside cable which is monitored for continuity

Info

Publication number
FR2315752A1
FR2315752A1 FR7519671A FR7519671A FR2315752A1 FR 2315752 A1 FR2315752 A1 FR 2315752A1 FR 7519671 A FR7519671 A FR 7519671A FR 7519671 A FR7519671 A FR 7519671A FR 2315752 A1 FR2315752 A1 FR 2315752A1
Authority
FR
France
Prior art keywords
cable
fuse wire
continuity
monitored
overload protection
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.)
Pending
Application number
FR7519671A
Other languages
French (fr)
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 FR7519671A priority Critical patent/FR2315752A1/en
Publication of FR2315752A1 publication Critical patent/FR2315752A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
    • H02H7/226—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices for wires or cables, e.g. heating wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks
    • H01B7/324—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks comprising temperature sensing means

Abstract

The thermal overload protection, for a low voltage cable, consists of a length of fuse wire, (2) laid inside the cable next to the current carrying conductor or conductors. The far end of the fuse wire is connected to the conductor and the continuity of the so-formed circuit is monitored. Excessive heat developed in the cable at any point causes the fuse wire to melt locally and to break continuity. In a three-phase three-core cable the fuse wire is located along the axis in contact with all three insulated wires. The end of the fuse wire may be connected to one or to all three cable wires.
FR7519671A 1975-06-24 1975-06-24 Thermal overload protection for LV cable - has fuse wire installed inside cable which is monitored for continuity Pending FR2315752A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7519671A FR2315752A1 (en) 1975-06-24 1975-06-24 Thermal overload protection for LV cable - has fuse wire installed inside cable which is monitored for continuity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7519671A FR2315752A1 (en) 1975-06-24 1975-06-24 Thermal overload protection for LV cable - has fuse wire installed inside cable which is monitored for continuity

Publications (1)

Publication Number Publication Date
FR2315752A1 true FR2315752A1 (en) 1977-01-21

Family

ID=9156917

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7519671A Pending FR2315752A1 (en) 1975-06-24 1975-06-24 Thermal overload protection for LV cable - has fuse wire installed inside cable which is monitored for continuity

Country Status (1)

Country Link
FR (1) FR2315752A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529373A1 (en) * 1982-06-29 1983-12-30 Thomson Jeumont Cables INSULATED CABLE FOR THE TRANSPORT OF ELECTRICAL ENERGY, PARTICULARLY AT HIGH VOLTAGE
EP0809417A2 (en) * 1996-05-23 1997-11-26 Sunbeam Products, Inc. Safety circuit for electrical devices
WO1999067862A1 (en) * 1998-06-19 1999-12-29 Daimlerchrysler Ag Fuse element for electrical installations
CN111161910A (en) * 2019-12-26 2020-05-15 安徽金蓝焰线缆有限公司 Self-power-off fireproof cable and connecting joint thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529373A1 (en) * 1982-06-29 1983-12-30 Thomson Jeumont Cables INSULATED CABLE FOR THE TRANSPORT OF ELECTRICAL ENERGY, PARTICULARLY AT HIGH VOLTAGE
EP0100694A1 (en) * 1982-06-29 1984-02-15 Thomson Jeumont Cables Insulated cable for conveying electrical energy, especially at a high voltage, and device for detecting faults in such a cable
EP0809417A2 (en) * 1996-05-23 1997-11-26 Sunbeam Products, Inc. Safety circuit for electrical devices
EP0809417A3 (en) * 1996-05-23 1998-02-04 Sunbeam Products, Inc. Safety circuit for electrical devices
WO1999067862A1 (en) * 1998-06-19 1999-12-29 Daimlerchrysler Ag Fuse element for electrical installations
CN111161910A (en) * 2019-12-26 2020-05-15 安徽金蓝焰线缆有限公司 Self-power-off fireproof cable and connecting joint thereof
CN111161910B (en) * 2019-12-26 2021-10-26 安徽金蓝焰电缆有限公司 Self-power-off fireproof cable connecting joint

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