EP0858244A2 - Câble chauffant dépourvu champ - Google Patents

Câble chauffant dépourvu champ Download PDF

Info

Publication number
EP0858244A2
EP0858244A2 EP97120263A EP97120263A EP0858244A2 EP 0858244 A2 EP0858244 A2 EP 0858244A2 EP 97120263 A EP97120263 A EP 97120263A EP 97120263 A EP97120263 A EP 97120263A EP 0858244 A2 EP0858244 A2 EP 0858244A2
Authority
EP
European Patent Office
Prior art keywords
sheath
cable
conductors
conductor
resistance conductor
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
EP97120263A
Other languages
German (de)
English (en)
Other versions
EP0858244B1 (fr
EP0858244A3 (fr
Inventor
Tom Harald Birkeland
Kare Asper
Kristin Fagerhaug Sommerfelt
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
Publication of EP0858244A2 publication Critical patent/EP0858244A2/fr
Publication of EP0858244A3 publication Critical patent/EP0858244A3/fr
Application granted granted Critical
Publication of EP0858244B1 publication Critical patent/EP0858244B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to electrical floor heating cables and in particular to cables generating acceptably small electromagnetic fields.
  • the magnetic field is best reduced/eliminated by a concentric shield, as in coaxial cables, but this is not a practical solution with heating cables.
  • the field generation problem can also be somewhat reduced by using two-conductor cables instead of single-conductor cables because the fields generated from the two conductors tend to eliminate each other.
  • the fields from two-conductor cables having a resistance conductor and a return conductor should - however - be further reduced.
  • the object of the present invention is to reduce the field generating properties of electrical floor heating cable having a first, near end and a second, far end and comprising within an outer protective sheath a cable core consisting of
  • a resistance conductor 1 is provided with a concentrical sheath 2 of insulation material such as crosslinked polyethylene. All embodiments have an outer protective sheath 4 of PVC or other suitable material and an earth screen 7 in contact with earth means 6 or 20.
  • the earth screen could be a conventional Al/PE tape in contact with Cu wires 6 or 20.
  • the resistance conductor can be substituted with a cold end copper conductor.
  • Return conductors 5;10,11;15,16,17 are embedded in a common insulation sheath 3 arranged over the resistance conductor sheath 2.
  • the sheath 3 could be a PVC sheath.
  • the return conductor means is divided into three separate conductors 5a, 5b and 5c which are distributed in the cable core.
  • the return conductors means is constituted by two conductors 10 and 11 arranged 180 o apart whereas in Figure 3 there are three conductors 15, 16 and 17 arranged 120 o apart.
  • the return conductors 5 are arranged 90 o apart.
  • an earth wire 6 is arranged in a slot in the common insulation sheath 3
  • the earth conductor 20 is arranged as a group of conductors between the sheath 3 and the earth screen 7 and covering 10 - 25 % of the sheath surface.
  • All elements of the cable are preferably arranged in parallel with the cable axis, thereby avoiding stranding operations.

Landscapes

  • Resistance Heating (AREA)
  • Insulated Conductors (AREA)
EP19970120263 1997-02-06 1997-11-19 Câble electrique chauffant les sols et dépourvu de champ magnétique Expired - Lifetime EP0858244B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO970531A NO304000B1 (no) 1997-02-06 1997-02-06 Varmekabel
NO970531 1997-02-06

Publications (3)

Publication Number Publication Date
EP0858244A2 true EP0858244A2 (fr) 1998-08-12
EP0858244A3 EP0858244A3 (fr) 1998-09-30
EP0858244B1 EP0858244B1 (fr) 2003-01-22

Family

ID=19900351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970120263 Expired - Lifetime EP0858244B1 (fr) 1997-02-06 1997-11-19 Câble electrique chauffant les sols et dépourvu de champ magnétique

Country Status (4)

Country Link
EP (1) EP0858244B1 (fr)
DE (1) DE69718614T2 (fr)
NO (1) NO304000B1 (fr)
PL (1) PL324632A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7388173B2 (en) 2004-12-27 2008-06-17 Nexans Heating cable

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519505A1 (fr) * 1981-12-31 1983-07-08 Thomson Jeumont Cables Cable chauffant et son procede de fabrication
EP0383152A2 (fr) * 1989-02-11 1990-08-22 Wilhelm Wetzel Gmbh + Co. Appareil de chauffage électrique souple
WO1992008036A1 (fr) * 1990-10-30 1992-05-14 Semen Zinovievich Erukhimovich Dispositif d'elimination et de prevention de depot de paraffine et d'hydrates dans des puits
JPH07176372A (ja) * 1993-12-21 1995-07-14 Mitsubishi Cable Ind Ltd ヒーティングケーブルとヒーティング装置
DE29613341U1 (de) * 1996-08-01 1996-09-19 Wilhelm, Friedrich, 85452 Moosinning Stromleiter und mit diesem verbindbarer Stecker
WO1997017707A1 (fr) * 1995-11-07 1997-05-15 Il Young Pak Blocage de champs electromagnetiques par cable electrique et filament chauffant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519505A1 (fr) * 1981-12-31 1983-07-08 Thomson Jeumont Cables Cable chauffant et son procede de fabrication
EP0383152A2 (fr) * 1989-02-11 1990-08-22 Wilhelm Wetzel Gmbh + Co. Appareil de chauffage électrique souple
WO1992008036A1 (fr) * 1990-10-30 1992-05-14 Semen Zinovievich Erukhimovich Dispositif d'elimination et de prevention de depot de paraffine et d'hydrates dans des puits
JPH07176372A (ja) * 1993-12-21 1995-07-14 Mitsubishi Cable Ind Ltd ヒーティングケーブルとヒーティング装置
WO1997017707A1 (fr) * 1995-11-07 1997-05-15 Il Young Pak Blocage de champs electromagnetiques par cable electrique et filament chauffant
DE29613341U1 (de) * 1996-08-01 1996-09-19 Wilhelm, Friedrich, 85452 Moosinning Stromleiter und mit diesem verbindbarer Stecker

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Anschlußfertiges, schutzgeerdetes und einseitig verlegbares Heizkabel" ELEKTROTECHNIK, 19 September 1974, XP002069377 *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 010, 30 November 1995 & JP 07 176372 A (MITSUBISHI CABLE IND LTD), 14 July 1995, *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7388173B2 (en) 2004-12-27 2008-06-17 Nexans Heating cable

Also Published As

Publication number Publication date
EP0858244B1 (fr) 2003-01-22
NO304000B1 (no) 1998-10-05
PL324632A1 (en) 1998-08-17
EP0858244A3 (fr) 1998-09-30
DE69718614T2 (de) 2003-05-22
NO970531L (no) 1998-08-07
NO970531D0 (no) 1997-02-06
DE69718614D1 (de) 2003-02-27

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