EP2027589B1 - Power cable - Google Patents

Power cable Download PDF

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Publication number
EP2027589B1
EP2027589B1 EP07720126A EP07720126A EP2027589B1 EP 2027589 B1 EP2027589 B1 EP 2027589B1 EP 07720126 A EP07720126 A EP 07720126A EP 07720126 A EP07720126 A EP 07720126A EP 2027589 B1 EP2027589 B1 EP 2027589B1
Authority
EP
European Patent Office
Prior art keywords
power cable
conductor
cable
phase conductors
phase
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.)
Active
Application number
EP07720126A
Other languages
German (de)
French (fr)
Other versions
EP2027589A1 (en
EP2027589B8 (en
Inventor
Christian Fischbacher
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.)
CFW EMV-Consulting AG
Original Assignee
CFW EMV-Consulting AG
CFW EMV Consulting AG
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 CFW EMV-Consulting AG, CFW EMV Consulting AG filed Critical CFW EMV-Consulting AG
Priority to PL07720126T priority Critical patent/PL2027589T3/en
Publication of EP2027589A1 publication Critical patent/EP2027589A1/en
Publication of EP2027589B1 publication Critical patent/EP2027589B1/en
Application granted granted Critical
Publication of EP2027589B8 publication Critical patent/EP2027589B8/en
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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00Power cables
    • H01B9/006Constructional features relating to the conductors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/04Flexible cables, conductors, or cords, e.g. trailing cables

Definitions

  • the present invention relates to a power cable for 50/60 Hz TN-S networks.
  • CA 996 645 describes a cable with multiple phase conductors and a monitor conductor. This cable is intended for use in mines where mechanical damage from rockfall and the like can be detected. A neutral conductor is not provided here. This cable triggers the the above problems are not. CA 996 645 also gives no indication of the problem of induction currents.
  • the invention has the object to provide a power cable for 50/60 Hz TN-S networks, in which the disadvantages mentioned can be largely avoided.
  • the inventive power cable corresponds to the characterizing features of claim 1. Further advantageous embodiments of the inventive concept are apparent from the dependent claims.
  • This power cable for 50/60 Hz TN-S networks is thus characterized by at least one ground conductor around which a plurality of phase conductors and at least one neutral conductor is stranded.
  • the power cable 1 has a ground conductor 2 around which three phase conductors 3, 4 and 5 and a neutral conductor 6 are grouped.
  • the earth conductor 2 may have a smaller cross section than the phase conductors 3, 4 and 5 and the neutral conductor 6 and be stretched.
  • the phase conductors 3, 4 and 5 are flexible and need not be shielded.
  • the power cable 1 may be wrapped with a tether 7.
  • the power cable 1 is stranded by the fact that the three phase conductors 3, 4 and 5 and the neutral conductor 6 as an outer conductor to the ground conductor 2 around are stranded.
  • the latter thus forms a continuous cable core, as shown schematically Fig. 2 is apparent.
  • the neutral conductor 6 is mitversilt to the ground conductor 2.
  • the lay length of the stranding of the outer conductor, that is, the phase conductors 3, 4 and 5 and the neutral conductor 6, is advantageously ⁇ 1 m. Otherwise, the exact stranding is not the subject of the invention.

Landscapes

  • Insulated Conductors (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)
  • Cable Accessories (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Communication Cables (AREA)
  • Organic Insulating Materials (AREA)

Abstract

The heavy current cable (1) for 50/60 Hz TN-S mains comprises preferably a central earth connector (2), around which three phase leads (3, 4, 5) and a neutral lead (6) are stranded. The earth lead (2) can have a smaller cross-section than the phase leads (3, 4, 5) and the neutral lead (6), and can be straight. This heavy current cable (1) is characterised by a defined cable reactance, by a constant current distribution over the phase cables and by the avoidance of any induction currents. In addition virtually no interference can be coupled into parallel lying I & C-leads. There is only a low level of NIS-radiation and no short-circuiting forces. Finally, there is a time saving during installation.

Description

Die vorliegende Erfindung betrifft ein Starkstromkabel für 50/60 Hz TN-S-Netze.The present invention relates to a power cable for 50/60 Hz TN-S networks.

Bei den elektrischen Hausinstallationen war und ist man der Ansicht, dass die konsequente Verdrahtung nach TN-S, Gewähr für einen erdstromfreien Betrieb bietet. Dies als Folge der ab Hausverteilung separaten Schutzleiterführung, das heisst, der Schutzleiter soll im normalen Betrieb stromlos sein.In the case of electrical house installations, it was and is believed that consistent wiring according to TN-S guarantees low-earth-current operation. This as a result of the distribution of the house separate protective conductor, that is, the protective conductor should be de-energized in normal operation.

Messungen im Umfeld von Hausinstallationen zeigen aber immer wieder das Gegenteil, nämlich dass die Schutzleiter, trotz TN-S Installationen, grosse Ströme führen, insbesondere dann, wenn Phasen-, Null- und Erdleiter als Einzelleiter nebeneinander verlegt sind. Wie theoretische und praktische Untersuchungen zeigten, werden diese Erdleiterströme durch Induktionen verursacht. Abhängig vom Leiterquerschnitt können die in die Schutzleiter induzierten Ströme beträchtliche Werte annehmen, das heisst zwischen 10 und 20% des grössten Phasenstroms. Weiter induzieren so verlegte Kabel auch Ströme in benachbarte Metallkonstruktionen, wie Kabeltrasse, Luft-, Wasser- und/oder Gasleitungen, Eisenarmierungen usw.. Die Folgen davon sind unerklärliche Magnetfelderhöhungen, EMV- und Korrosionsprobleme.Measurements in the environment of home installations, however, always show the opposite, namely that the protective conductors, despite TN-S installations, carry large currents, especially when phase, neutral and earth conductors are laid side by side as a single conductor. As theoretical and practical investigations have shown, these earth conductor currents are caused by inductions. Depending on the conductor cross-section, the currents induced in the protective conductors can reach considerable values, ie between 10 and 20% of the largest phase current. Furthermore, cables thus laid also induce currents into adjacent metal structures, such as cable trays, air, water and / or gas pipes, iron reinforcements, etc. The consequences of this are inexplicable magnetic field increases, EMC and corrosion problems.

CA 996 645 beschreibt ein Kabel mit mehreren Phasenleitern und einem Übenrvachungsleiter. Dieses Kabel ist für den Einsatz in Minen gedacht, wo mechanische Schäden durch Steinschlag und dergleichen festzustellen sind. Ein Neutralleiter ist hier nicht vorgesehen. Dieses Kabel löst die vorgenannten Probleme nicht. CA 996 645 gibt auch keine Hinweise zum Problemkreis der Induktionsströme. CA 996 645 describes a cable with multiple phase conductors and a monitor conductor. This cable is intended for use in mines where mechanical damage from rockfall and the like can be detected. A neutral conductor is not provided here. This cable triggers the the above problems are not. CA 996 645 also gives no indication of the problem of induction currents.

Auf der Grundlage dieser Erkenntnisse setzt sich die Erfindung die Aufgabe, ein Starkstromkabel für 50/60 Hz TN-S-Netze zu schaffen, bei dem die genannten Nachteile weitgehend vermieden werden können.On the basis of these findings, the invention has the object to provide a power cable for 50/60 Hz TN-S networks, in which the disadvantages mentioned can be largely avoided.

Das erfindungsgemässe Starkstromkabel entspricht den kennzeichnenden Merkmalen des Patentanspruchs 1. Weitere vorteilhafte Ausbildungen des Erfindungsgedankens sind aus den abhängigen Patentansprüchen ersichtlich.The inventive power cable corresponds to the characterizing features of claim 1. Further advantageous embodiments of the inventive concept are apparent from the dependent claims.

Dieses Starkstromkabel für 50/60 Hz TN-S-Netze ist somit gekennzeichnet durch mindestens einen Erdleiter, um den eine Mehrzahl von Phasenleitern sowie mindestens ein Neutralleiter verseilt ist.This power cable for 50/60 Hz TN-S networks is thus characterized by at least one ground conductor around which a plurality of phase conductors and at least one neutral conductor is stranded.

Nachfolgend wird ein bevorzugtes Ausführungsbeispiel der Erfindung anhand der Zeichnung näher beschrieben.

Fig. 1
zeigt einen Querschnitt des Starkstromkabels;
Fig. 2
zeigt eine schematische Ansicht desselben Starkstromkabels.
Hereinafter, a preferred embodiment of the invention will be described in more detail with reference to the drawing.
Fig. 1
shows a cross section of the power cable;
Fig. 2
shows a schematic view of the same power cable.

Im vorliegenden Beispiel weist das Starkstromkabel 1 einen Erdleiter 2 auf, um den sich drei Phasenleiter 3, 4 und 5 sowie ein Neutralleiter 6 gruppieren. Der Erdleiter 2 kann einen kleineren Querschnitt als die Phasenleiter 3, 4 und 5 sowie den Neutralleiter 6 aufweisen und gestreckt sein. Die Phasenleiter 3, 4 und 5 sind flexibel und brauchen nicht abgeschirmt zu sein. Das Starkstromkabel 1 kann mit einem Halteband 7 umwickelt sein.In the present example, the power cable 1 has a ground conductor 2 around which three phase conductors 3, 4 and 5 and a neutral conductor 6 are grouped. The earth conductor 2 may have a smaller cross section than the phase conductors 3, 4 and 5 and the neutral conductor 6 and be stretched. The phase conductors 3, 4 and 5 are flexible and need not be shielded. The power cable 1 may be wrapped with a tether 7.

Das Starkstromkabel 1 ist dadurch verseilt, dass die drei Phasenleiter 3, 4 und 5 sowie der Neutralleiter 6 als Aussenleiter um den Erdleiter 2 herum verseilt sind. Letzterer bildet also einen durchgehenden Kabelkern, so wie dies schematisch aus Fig. 2 ersichtlich ist. Der Neutralleiter 6 ist um den Erdleiter 2 mitverseilt. Die Schlaglänge der Verseilung der Aussenleiter, das heisst, der Phasenleiter 3, 4 und 5 sowie des Neutralleiters 6, ist vorteilhaft < 1 m. Ansonsten ist die genaue Verseilungsart nicht Gegenstand der Erfindung.The power cable 1 is stranded by the fact that the three phase conductors 3, 4 and 5 and the neutral conductor 6 as an outer conductor to the ground conductor 2 around are stranded. The latter thus forms a continuous cable core, as shown schematically Fig. 2 is apparent. The neutral conductor 6 is mitversilt to the ground conductor 2. The lay length of the stranding of the outer conductor, that is, the phase conductors 3, 4 and 5 and the neutral conductor 6, is advantageously <1 m. Otherwise, the exact stranding is not the subject of the invention.

Mit ein Vorteil dieser Ausbildung des Starkstromkabels 1 ist darin zu sehen, dass es auch bei grossen Leiterquerschnitten flexibel bleibt und somit problemlos verlegt werden kann. Daher ist dieses Starkstromkabel 1 sehr gut in der Hausinstallation einsetzbar. Das erfindungsgemässe Starkstromkabel bietet folgende, enormen Vorteile:

  • definierte Kabelreaktanz,
  • gleichmässige Stromverteilung auf die Phasenleiter 3, 4 und 5,
  • keine Induktionsströme auf den Erdleiter 2 durch die Aussenleiter, das heisst, durch die Phasenleiter 3, 4 und 5 und den Neutralleiter 6,
  • keine Induktionsströme auf die Aussenleiter, das heisst, auf die Phasenleiter 3, 4 und 5 und den Neutralleiter 6, von benachbarten Stromkabeln,
  • keine Induktionsströme in benachbarte Metallkonstruktionen wie Kabeltrasse, Kabelaufhängungen, Ringerdleitungen, Luft, Wasser- und/oder Gasleitungen,
  • praktisch keine Störeinkopplungen auf parallel liegende MSR-Leitungen,
  • geringe NIS-Abstrahlung,
  • keine Kurzschlusskräfte,
  • Zeiteinsparung bei der Installation,
  • auch geeignet für den Parallelbetrieb.
With an advantage of this design of the power cable 1 is the fact that it remains flexible even with large conductor cross-sections and thus can be laid easily. Therefore, this power cable 1 can be used very well in the domestic installation. The power cable according to the invention offers the following enormous advantages:
  • defined cable reactance,
  • uniform current distribution to the phase conductors 3, 4 and 5,
  • no induction currents on the earth conductor 2 through the outer conductors, that is, through the phase conductors 3, 4 and 5 and the neutral conductor 6,
  • no induction currents to the outer conductors, that is, to the phase conductors 3, 4 and 5 and the neutral conductor 6, from adjacent power cables,
  • no induction currents into adjacent metal structures such as cable trays, cable suspensions, Ringer pipes, air, water and / or gas pipes,
  • virtually no interference couplings to parallel MSR lines,
  • low NIS radiation,
  • no short-circuit forces,
  • Time savings during installation,
  • also suitable for parallel operation.

Es liegt im Rahmen der Erfindung, das Starkstromkabel im einzelnen anders auszubilden als dies in der schematischen Zeichnung dargestellt ist.It is within the scope of the invention to form the power cable in detail differently than shown in the schematic drawing.

Claims (8)

  1. Power cable for 50/60 Hz TN-S networks characterised by at least one earthing conductor (2) around which a plurality of phase conductors (3, 4, 5) as well as at least one neutral conductor (6) is twisted.
  2. Power cable according to claim 1, characterised by an earthing conductor (2), three phase conductors (3, 4, 5) and one neutral conductor (6).
  3. Power cable according to claim 1 or 2, characterised in that the length of lay of the phase conductors (3, 4, 5) and the neutral conductor (6) twisted around the earthing conductor (2) is < 1 m.
  4. Power cable according to one of claims 1 to 3, characterised in that the earthing conductor (2) has a smaller cross-section than the phase conductors (3, 4, 5) and/or the neutral conductor (6).
  5. Power cable according to one of claims 1 to 4, characterised in that the earthing conductor (2) is stretched.
  6. Power cable according to one of claims 1 to 5, characterised in that the phase conductors (3, 4, 5) are not shielded.
  7. Power cable according to one of claims 1 to 5, characterised in that the phase conductors (3, 4, 5) are flexible.
  8. Power cable according to one of claims 1 to 7, characterised in that a holding strap (7) is wrapped around it.
EP07720126A 2006-06-14 2007-05-07 Power cable Active EP2027589B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07720126T PL2027589T3 (en) 2006-06-14 2007-05-07 Power cable

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH9642006 2006-06-14
PCT/CH2007/000229 WO2007143865A1 (en) 2006-06-14 2007-05-07 High current cable

Publications (3)

Publication Number Publication Date
EP2027589A1 EP2027589A1 (en) 2009-02-25
EP2027589B1 true EP2027589B1 (en) 2011-09-21
EP2027589B8 EP2027589B8 (en) 2012-02-15

Family

ID=38283658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07720126A Active EP2027589B8 (en) 2006-06-14 2007-05-07 Power cable

Country Status (9)

Country Link
US (1) US7923640B2 (en)
EP (1) EP2027589B8 (en)
JP (1) JP5146694B2 (en)
CN (1) CN101467219B (en)
AT (1) ATE525732T1 (en)
DK (1) DK2027589T3 (en)
ES (1) ES2373373T3 (en)
PL (1) PL2027589T3 (en)
WO (1) WO2007143865A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4310866A1 (en) 2022-07-21 2024-01-24 Bayerische Kabelwerke AG Power cable

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103578635A (en) * 2012-08-08 2014-02-12 成都昊地科技有限责任公司 Three-phase five-wire cable convenient to install
CH712791B1 (en) * 2016-08-06 2020-03-31 Cfw Emv Consulting Ag Power transmission device with at least one three-phase cable.
CN109935389A (en) * 2017-12-15 2019-06-25 湖南华菱线缆股份有限公司 A kind of three-phase multicore parallel current-sharing construction of cable

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA996645A (en) * 1974-05-03 1976-09-07 Canada Wire And Cable Limited Power cable having an extensible ground check conductor
CN2115571U (en) * 1991-11-23 1992-09-09 江苏宝胜电缆厂 Power cable
US5777273A (en) * 1996-07-26 1998-07-07 Delco Electronics Corp. High frequency power and communications cable
US5864094A (en) * 1996-12-19 1999-01-26 Griffin; Michael D. Power cable
CN2380999Y (en) * 1998-09-29 2000-05-31 衡阳电缆厂 Novel five-core fire-retardant electric power cable
US6628009B1 (en) * 2000-10-06 2003-09-30 The Root Group, Inc. Load balanced polyphase power distributing system
CN2678075Y (en) * 2004-02-17 2005-02-09 广东南洋电缆集团有限公司 Power cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4310866A1 (en) 2022-07-21 2024-01-24 Bayerische Kabelwerke AG Power cable
DE102022207440A1 (en) 2022-07-21 2024-02-01 Bayerische Kabelwerke Aktiengesellschaft Power cable

Also Published As

Publication number Publication date
US20090218115A1 (en) 2009-09-03
CN101467219B (en) 2011-12-14
JP2009540513A (en) 2009-11-19
ES2373373T3 (en) 2012-02-02
CN101467219A (en) 2009-06-24
EP2027589A1 (en) 2009-02-25
WO2007143865A1 (en) 2007-12-21
JP5146694B2 (en) 2013-02-20
DK2027589T3 (en) 2012-01-16
EP2027589B8 (en) 2012-02-15
US7923640B2 (en) 2011-04-12
PL2027589T3 (en) 2012-02-29
ATE525732T1 (en) 2011-10-15

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