EP0880302A3 - Heating cable and method producing the same - Google Patents

Heating cable and method producing the same Download PDF

Info

Publication number
EP0880302A3
EP0880302A3 EP98400785A EP98400785A EP0880302A3 EP 0880302 A3 EP0880302 A3 EP 0880302A3 EP 98400785 A EP98400785 A EP 98400785A EP 98400785 A EP98400785 A EP 98400785A EP 0880302 A3 EP0880302 A3 EP 0880302A3
Authority
EP
European Patent Office
Prior art keywords
ptc
silane
extruded
heating cable
layer
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.)
Granted
Application number
EP98400785A
Other languages
German (de)
French (fr)
Other versions
EP0880302B1 (en
EP0880302A2 (en
Inventor
Lars Jonas Kenert Torstensson
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.)
Nexans SA
Original Assignee
Alcatel SA
Alcatel Alsthom Compagnie Generale dElectricite
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 Alcatel SA, Alcatel Alsthom Compagnie Generale dElectricite filed Critical Alcatel SA
Priority to DK98400785T priority Critical patent/DK0880302T3/en
Publication of EP0880302A2 publication Critical patent/EP0880302A2/en
Publication of EP0880302A3 publication Critical patent/EP0880302A3/en
Application granted granted Critical
Publication of EP0880302B1 publication Critical patent/EP0880302B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/146—Conductive polymers, e.g. polyethylene, thermoplastics
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Landscapes

  • Processes Of Treating Macromolecular Substances (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
  • Resistance Heating (AREA)

Abstract

The present invention relates to a heating cable comprising a core having two electrical conductors (4,5), a PTC element therebetween and an outer layer (3) of insulation material. The core comprises an extruded polymer center element (1) in which the two conductors (4,5) are arranged so that part of the conductor surfaces coincide with the center element surface, an extruded layer (2) of a PTC polymer arranged over the center element in contact with said conductor surface parts, and at least one outer extruded insulation sheath (3). The PTC layer (2) is based on ethylene and ethylene-octene copolymer with carbon black and silane grafted by direct feeding silane/peroxide or using a Master Batch with silane/peroxide/catalyst.
EP19980400785 1997-05-20 1998-04-02 Heating cable and method producing the same Expired - Lifetime EP0880302B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK98400785T DK0880302T3 (en) 1997-05-20 1998-04-02 Heating cable and method for making same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO972275A NO304920B1 (en) 1997-05-20 1997-05-20 Electric heating cable
NO972275 1997-05-20

Publications (3)

Publication Number Publication Date
EP0880302A2 EP0880302A2 (en) 1998-11-25
EP0880302A3 true EP0880302A3 (en) 1999-05-26
EP0880302B1 EP0880302B1 (en) 2005-03-09

Family

ID=19900722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980400785 Expired - Lifetime EP0880302B1 (en) 1997-05-20 1998-04-02 Heating cable and method producing the same

Country Status (5)

Country Link
EP (1) EP0880302B1 (en)
DE (1) DE69829244T2 (en)
DK (1) DK0880302T3 (en)
NO (1) NO304920B1 (en)
PL (1) PL187743B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566078B1 (en) * 2002-11-22 2006-09-13 Koninklijke Philips Electronics N.V. Sol-gel based heating element
DE102005059366A1 (en) * 2005-12-13 2007-06-14 Gitschner, Hans Walter, Dr.-Ing. Covering conductors with polyethylene cross-linked with silane for power cables involves performing the cross-linking process on-line in the extruder barrel
FR2901449B1 (en) * 2006-05-16 2008-07-04 Nexans Sa AUTO-REGULATING HEATING CABLE
FR2902273B1 (en) * 2006-06-07 2008-08-29 Nexans Sa HEATED ELECTRIC CABLE WITH LOW STARTING CURRENT
FR2919106B1 (en) * 2007-07-16 2009-10-09 Acome Soc Coop Production CTP BEARING MATERIAL FOR MEDIUM AND HIGH TEMPERATURE APPLICATION, SELF - ADJUSTING STUCTURES COMPRISING SAME AND METHOD FOR MANUFACTURING THE SAME.
DE102011002067A1 (en) 2011-04-14 2012-10-18 Domoteck Ltd. Self-regulating heating pipeline has power conducting element that is provided with electrical contact portion which is provided with conductor casing of electrical conductors
CN103050171A (en) * 2012-12-13 2013-04-17 山东昆嵛电缆有限公司 Three-core cable with overheating protection function
EP3205179B1 (en) 2014-10-09 2021-03-31 nVent Services GmbH Voltage-leveling heater cable
EP3257326B1 (en) 2015-02-09 2020-06-03 nVent Services GmbH Heater cable having a tapered profile
CN115243411A (en) 2016-04-29 2022-10-25 恩文特服务有限责任公司 Voltage leveling integral self-regulating heater cable
US10966290B2 (en) 2017-02-01 2021-03-30 Nvent Services Gmbh Low smoke, zero halogen self-regulating heating cable

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595198A (en) * 1976-10-15 1981-08-12 Raychem Corp Ptc compositions and devices comprising them
US4534889A (en) * 1976-10-15 1985-08-13 Raychem Corporation PTC Compositions and devices comprising them
EP0301864A1 (en) * 1987-07-29 1989-02-01 Mitsui Petrochemical Industries, Ltd. Electrofusion joint
EP0312204A2 (en) * 1987-10-09 1989-04-19 Raychem Limited Conductive polymeric conduit heater
US5045673A (en) * 1990-04-04 1991-09-03 General Signal Corporation PTC devices and their composition
US5236765A (en) * 1984-04-06 1993-08-17 Nv Raychem Sa Heat-recoverable article

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595198A (en) * 1976-10-15 1981-08-12 Raychem Corp Ptc compositions and devices comprising them
US4534889A (en) * 1976-10-15 1985-08-13 Raychem Corporation PTC Compositions and devices comprising them
US5236765A (en) * 1984-04-06 1993-08-17 Nv Raychem Sa Heat-recoverable article
EP0301864A1 (en) * 1987-07-29 1989-02-01 Mitsui Petrochemical Industries, Ltd. Electrofusion joint
EP0312204A2 (en) * 1987-10-09 1989-04-19 Raychem Limited Conductive polymeric conduit heater
US5045673A (en) * 1990-04-04 1991-09-03 General Signal Corporation PTC devices and their composition

Also Published As

Publication number Publication date
NO972275L (en) 1998-11-23
PL326380A1 (en) 1998-11-23
PL187743B1 (en) 2004-09-30
DE69829244T2 (en) 2006-02-09
DK0880302T3 (en) 2005-06-27
DE69829244D1 (en) 2005-04-14
NO304920B1 (en) 1999-03-01
EP0880302B1 (en) 2005-03-09
EP0880302A2 (en) 1998-11-25
NO972275D0 (en) 1997-05-20

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