NO311998B1 - Multi-conductor, plastic insulated low voltage / high current cable - Google Patents
Multi-conductor, plastic insulated low voltage / high current cable Download PDFInfo
- Publication number
- NO311998B1 NO311998B1 NO19973316A NO973316A NO311998B1 NO 311998 B1 NO311998 B1 NO 311998B1 NO 19973316 A NO19973316 A NO 19973316A NO 973316 A NO973316 A NO 973316A NO 311998 B1 NO311998 B1 NO 311998B1
- Authority
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- Norway
- Prior art keywords
- conductor
- insulation
- base material
- current cable
- low
- Prior art date
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 7
- 239000004033 plastic Substances 0.000 title claims abstract description 7
- 239000004020 conductor Substances 0.000 title claims description 13
- 239000000463 material Substances 0.000 claims abstract description 44
- 238000009413 insulation Methods 0.000 claims abstract description 21
- -1 polyethylene Polymers 0.000 claims description 11
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 150000001336 alkenes Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 2
- WMWXXXSCZVGQAR-UHFFFAOYSA-N dialuminum;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3] WMWXXXSCZVGQAR-UHFFFAOYSA-N 0.000 claims description 2
- 229920001519 homopolymer Polymers 0.000 claims description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 2
- 239000000347 magnesium hydroxide Substances 0.000 claims description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 229920001897 terpolymer Polymers 0.000 claims description 2
- 238000004040 coloring Methods 0.000 claims 1
- 238000005336 cracking Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 7
- 239000011888 foil Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 229920001684 low density polyethylene Polymers 0.000 description 3
- 239000004702 low-density polyethylene Substances 0.000 description 3
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 230000009972 noncorrosive effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920003031 santoprene Polymers 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
- H01B7/361—Insulated conductors or cables characterised by their form with distinguishing or length marks being the colour of the insulation or conductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
-
- 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
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
Abstract
Description
Oppfinnelsen vedrører en flerleder-, plastisolert lavspennings-sterkstrømskabel utformet med tanke på en miljøvennlig senere anvendelse. The invention relates to a multi-conductor, plastic-insulated low-voltage high-current cable designed with an environmentally friendly later application in mind.
For at en plastisolert lavspenningskabel, slik den brukes i energi-forsyningsnett, på slutten av sin levetid skal kunne tilbakeføres i sin helhet til produksjonen av nye kabler, er det kjent en kabelkonstruksjon der bare miljøvennlige (altså halogenfrie) og resirkulerbare (altså ikke tverrbundede) plaster blir anvendt i fremstillingen av konstruksjonselementene, så som ledningsisolasjon, indre mantel og ytre mantel, hvorved det tas hensyn til den gode delbarhet (artsrenhet) av stoffkomponentene. På denne måte anvendes som isolasjonsmateriale for de forskjellige ledninger en termoplastelastomer, med forskjellige farver og med EPDM-base, mens for den ytre mantel anvendes et polyvalent, termoplast- og halogenfritt materiale basert på en polymer, og fylt med et inert, mineralsk, flammebeskyttende stoff. Ledningens isolasjonsmateriale er fremstilt slik at den tåler ledertemperatur på opptil 90°C i langtidsdrift, opptil 110°C i nøddrift og opptil 250°C ved kortslutning. Ved fremstilling av denne kabel blir det også anvendt miljøvennlige produksjonsmetoder (f.eks. med minst mulig anvendelse av kjølevann og elektrisk energi) og lønnsomheten ivaretas (DE-Z "elektro-technik" - Hefte 12 - 17. des. 1993, sider 24, 26 og 35). In order for a plastic-insulated low-voltage cable, as it is used in energy supply networks, at the end of its life to be able to be returned in its entirety to the production of new cables, a cable construction is known in which only environmentally friendly (i.e. halogen-free) and recyclable (i.e. not cross-linked) plaster is used in the production of the construction elements, such as wire insulation, inner sheath and outer sheath, whereby account is taken of the good divisibility (species purity) of the fabric components. In this way, a thermoplastic elastomer, with different colors and with an EPDM base, is used as insulation material for the various lines, while for the outer sheath a polyvalent, thermoplastic and halogen-free material based on a polymer is used, and filled with an inert, mineral, flame retardant fabric. The cable's insulation material is manufactured so that it can withstand conductor temperatures of up to 90°C in long-term operation, up to 110°C in emergency operation and up to 250°C in the event of a short circuit. In the production of this cable, environmentally friendly production methods are also used (e.g. with the least possible use of cooling water and electrical energy) and profitability is ensured (DE-Z "elektro-technik" - Issue 12 - 17 Dec. 1993, pages 24 , 26 and 35).
Med utgangspunkt i en lavspennings-/sterkstrømskabel med de trekk som angis i den innledende del av patentkrav 1 er oppfinnelsens hensikt å forbedre miljøvennligheten til en slik kabel ved artsminimert materialanvendelse. Based on a low-voltage/high-current cable with the features stated in the introductory part of patent claim 1, the purpose of the invention is to improve the environmental friendliness of such a cable by using minimal material.
Oppgaven løses ifølge den kjennetegnende del av patentkrav 1 ved at ledningens isolasjon, den indre og den ytre mantel består av samme basismateriale, idet den indre mantel er utformet som en omvikling (Bespinnung), at basismaterialet er farvet sort, og at ledningens isolasjon er forsynt med identifikasjonsmerker. The task is solved according to the characteristic part of patent claim 1 in that the cable's insulation, the inner and the outer jacket consist of the same base material, the inner jacket is designed as a wrap (Bespinnung), that the base material is colored black, and that the cable's insulation is provided with identification marks.
Ved en slik utformet kabel vil det anvendes det samme basismateriale for alle konstruksjonselementer som av elektriske og/eller mekaniske grunner benyttes som omvikling. Derved kan materialforbruk, energiforbruk, materialrester og avfall bringes til et minimum og produksjonskostnadene reduseres og optimaliseres. Ved en videreutnyttelse av de nevnte konstruksjonselementene er det unødvendig å skille mellom isolasjonsmaterialet i den enkelte ledning, i den indre mantel og i den ytre mantel, særlig når materialet som skal anvendes ved en videre bearbeidelse, altså resirkuleringsmaterialet utelukkende anvendes for fremstilling av folier for den indre og den ytre mantel. Derved blir materialene som anvendes for identifikasjon av ledningen uten virksom innflytelse i de mekaniske egenskaper til mantelmaterialet og dets farve. Ialt foreligger det en halogenfri, fleksibel kabel som kan fremstilles fullstendig fri for tungmetaller, såfremt det for ledningens identifikasjon anvendes tilsvarende farvegrupper, f.eks. et stoff med handelsbetegnelsen "Sicolen" fremstilt av firmaet BASF eller med betegnelsen "Blau Ral 5015" fra firmaet Bayerischen Kabelwerke, DE, som kan blandes med basismaterialet slik at ledningen i kabelen kan identifiseres på enkel måte og med en ekstrudert, farvet, langsgående strek (blå, brun, gul). Som alternativ kan det tenkes også anvendelse av et helfarvet påtrykk med forskjellige merker. In the case of a cable designed in this way, the same base material will be used for all structural elements which, for electrical and/or mechanical reasons, are used as wrapping. Thereby, material consumption, energy consumption, material residues and waste can be brought to a minimum and production costs can be reduced and optimised. In the case of further utilization of the aforementioned structural elements, it is unnecessary to distinguish between the insulation material in the individual wire, in the inner sheath and in the outer sheath, especially when the material to be used in further processing, i.e. the recycling material is exclusively used for the production of foils for the inner and outer mantle. Thereby, the materials used for identification of the wire have no effective influence on the mechanical properties of the jacket material and its colour. In general, there is a halogen-free, flexible cable that can be produced completely free of heavy metals, provided that corresponding color groups are used for the cable's identification, e.g. a substance with the trade name "Sicolen" manufactured by the company BASF or with the name "Blau Ral 5015" from the company Bayerischen Kabelwerke, DE, which can be mixed with the base material so that the wire in the cable can be easily identified and with an extruded, colored, longitudinal line (blue, brown, yellow). As an alternative, the use of a full-colour print with different brands can also be considered.
Som basismateriale for ledningens isolasjon, den indre og den ytre mantel, kan man innenfor oppfinnelsens ramme anvende en polyetylen som er stabilisert mot spenningsbristtendens, med en tetthet mellom 0,92 og 0,94 g/cm^ og med Shore-D-hardhet høyere eller i det minste lik 42. Et slikt materiale, hvor det dreier seg om et lavtetthetspolyetylenmateriale, modifisert med en liten andel etylenvinylacetatkopolymer, viser både de nødvendige mekaniske egenskaper for et båndmateriale som danner den ytre og den indre mantel og de nødvendige elektriske egenskaper for ledningens isolasjon, og kan evt. med vanlige midler stabiliseres såvel mot aldring som mot kopperoksydering. Når det gjelder varmebestandigheten til ledningens isolasjon kan denne tåle langtidstemperaturer lavere enn eller lik 70°C i ledende tilstand. Hvis en langtidstemperatur på maksimum 90°C skal kunne tåles, kan det innenfor oppfinnelsens ramme anvendes i handelen vanlige termoplastiske elastomerer på polypropylenbasis som basismaterialer. Også slike materialer kan stabiliseres med vanlige midler såvel mot aldring som mot kobberoksydering. Et egnet materiale er f.eks. en polypropylen modifisert med en etylenpropylenko- eller terpolymer, også en "Polyblend" As the base material for the cable's insulation, the inner and the outer jacket, within the framework of the invention, a polyethylene that is stabilized against voltage short-circuit tendency can be used, with a density between 0.92 and 0.94 g/cm^ and with a Shore-D hardness higher or at least equal to 42. Such a material, which is a low density polyethylene material, modified with a small proportion of ethylene vinyl acetate copolymer, exhibits both the required mechanical properties for a tape material forming the outer and inner sheath and the required electrical properties for the wire insulation, and can possibly be stabilized with normal means both against aging and against copper oxidation. When it comes to the heat resistance of the cable's insulation, it can withstand long-term temperatures lower than or equal to 70°C in the conductive state. If a long-term temperature of a maximum of 90°C is to be tolerated, within the scope of the invention, commercially available thermoplastic elastomers on a polypropylene basis can be used as base materials. Such materials can also be stabilized with common means both against aging and against copper oxidation. A suitable material is e.g. a polypropylene modified with an ethylene propylene or terpolymer, also a "Polyblend"
(polymersammensetning) med adskilte faser (DE-Z "Kautschuk + Gummi. Plaste" nr. 9/86, sider 804, 806, DE-Z "Kautschuk + Gummi. Kunstoffe" nr. 8/86, sider 695/96, DE-Z "Plaste" 1989, hefte 7, sider 606 til 611). Slike termoplastiske elastomerer selges f.eks. av firmaet Monsanto under navnet "Santoprene". Med spesielle fordeler, og med lavt energiforbruk ved (polymer composition) with separate phases (DE-Z "Kautschuk + Gummi. Plaste" No. 9/86, pages 804, 806, DE-Z "Kautschuk + Gummi. Kunststoffe" No. 8/86, pages 695/96, DE -Z "Plastic" 1989, booklet 7, pages 606 to 611). Such thermoplastic elastomers are sold e.g. by the company Monsanto under the name "Santoprene". With special advantages, and with low energy consumption
fremstillingen, kan det også som basismateriale anvendes polypropylen-reaktorblandinger med et elastomerinnhold høyere enn 25 i vektprosent, utviklet for spesielle behov i automobilindustrien (DE-Z "Plast", 1992, sidene 499-501). Tilsvarende materialer markedsføres av firmaet BASF under navnet "Novolen" og også av firmaet Himont i USA. production, polypropylene reactor mixtures with an elastomer content higher than 25% by weight, developed for special needs in the automotive industry, can also be used as a base material (DE-Z "Plast", 1992, pages 499-501). Similar materials are marketed by the company BASF under the name "Novolen" and also by the company Himont in the USA.
Et utførelseseksempel av den nye sterkstrømskabel vises på figuren. A design example of the new high-current cable is shown in the figure.
Figuren viser en fireleder lavspennings-sterkstrømskabel, der en sektorformet leder 1, bestående av aluminium eller av kobber er dekket med en ekstrudert plastisolasjon 2. Over den tvunnede forbindelse dannet av de fire ledninger er anordnet en folieomvikling 4, som i sin tur er omsluttet av den ekstruderte ytre mantel 5. For fremstilling av ledningens isolasjon 2, folieomvikling en 4 og den ytre mantel 5 anvendes samme basismateriale, nemlig en kommersielt tilgjengelig lavtetthetspolyetylen "Lupolen 2012 D" fra firmaet BASF med en tetthet på 0,919 til 0,924 g/cm<3>. Dette basismateriale er farvet sort ved hjelp av sot (derved stiger materialets tetthet til omkring 0,933 til 0,939 g/cm<3>) slik at ledningens isolasjon, omviklingen og den ytre mantel er sorte. De enkelte ledninger adskilles fra hverandre ved at tre ledninger forsynes med en ekstrudert farvelagt langsgående strek 3 med farvepigmentene blå, brun og gul. Herved kan man anvende tungmetallfrie farvestoffer. The figure shows a four-conductor low-voltage high-current cable, where a sector-shaped conductor 1, consisting of aluminum or of copper, is covered with an extruded plastic insulation 2. Above the twisted connection formed by the four wires, a foil wrapping 4 is arranged, which in turn is enclosed by the extruded outer sheath 5. The same basic material is used for the production of the wire's insulation 2, foil wrapping a 4 and the outer sheath 5, namely a commercially available low-density polyethylene "Lupolen 2012 D" from the company BASF with a density of 0.919 to 0.924 g/cm<3 >. This base material is colored black with the help of carbon black (thereby increasing the density of the material to around 0.933 to 0.939 g/cm<3>) so that the wire's insulation, wrapping and outer jacket are black. The individual wires are separated from each other by providing three wires with an extruded colored longitudinal line 3 with the color pigments blue, brown and yellow. In this way, heavy metal-free dyes can be used.
I stedet for det ovennevte basismateriale med polyetylenbasis kan det for ledningens isolasjon 2, folieomviklingen 4 og ytre mantel 5 anvendes en polypropylenreaktorblanding med et elastomerinnhold på eksempelvis 43% elylenpropylenkautsjuk (EPM) (f.eks. "Novolen" 2912 HX fra firmaet Instead of the above-mentioned base material with a polyethylene base, a polypropylene reactor mixture with an elastomer content of e.g. 43% ethylene propylene rubber (EPM) can be used for the cable's insulation 2, the foil wrapping 4 and the outer sheath 5 (e.g. "Novolen" 2912 HX from the company
BASF). BASF).
Folien av basismateriale som ved tilsetting av sot er farvet sort og som anvendes for fremstilling av den indre mantel har en veggtykkelse på 100 til 120 um og blir hensiktsmessig anbrakt i flere overlappende lag. The foil of base material which is colored black by the addition of soot and which is used for the production of the inner mantle has a wall thickness of 100 to 120 µm and is appropriately placed in several overlapping layers.
Hvis det ved en utførelse av kabelen ifølge oppfinnelsen stilles spesielle krav til flammebestandighet, må konseptet "likt basismateriale for alle dekk-elementer" forlates. For å kunne tilfredsstille "non corrosive" (NC), -kravet (ikke-korrosiv), dvs. halogenfri- kravet tilveiebringer den foreliggende oppfinnelse en ytterligere flerleder-, plastisolert lavspennings-sterkstrømkabel som er kjennetegnet ved det som er angitt i krav 7. Man kan i stedet for den hittil vanlige ytre mantel av PVC anvende en ytre mantel basert på en fyllstoffkompatibel olefin-homopolymer eller en olefinkopolymer. Egnede polymerer er f.eks. en etylenvinylacetatkopolymer med en VA-andel på 10-30 prosent og også en polyetylen med svart lav tetthet, såkalt ULD-PE (tetthet ca 0,91 g/cm<3>), og spesielt ikke-polare kopolymerer som f.eks. metallocenkatalysert polyetylen ("Internasjonal Wire + Cable Symposium Proceedings", 1991, s. 397, og "Plaste" 1993, hefte 12, side 985-987). Disse basismaterialer er flammehindrende fyllstoffer i form av aluminiumoksydhydrat eller magnesiumhydroksyd i en mengde på hhv. omkring 30 vektprosent og mellom ca. 70 vektdeler og 100 vektdeler av polymerens basismateriale. Det er hensiktsmessig å anvende kritt som ytterligere fyllstoff i en mengde mellom 25% og 50% av vekten, dvs. mellom 50 og 100 vektdeler av polymerens basismateriale. De ovennevte polymerbasismaterialer er tilgjengelige i handelen. Nevnte, ikke-polare kopolymer markedsføres f.eks. av firmaet Dow Chemical, USA under betegnelsen "Engage"-polymer og av firmaet Exxon, USA med navnet "Exxpol". Ved en slik utformet kabel reduseres dem hittil vanlige artmangfoldighet i materialene for isolasjon, indre mantel og ytre mantel, da det anvendes samme basismateriale for isolasjonen og for den indre mantel og det anvendes ialt bare to forskjellige basismaterialer. Disse kan ved videre anvendelse av en slik kabel deles og prosesseres separat. If a design of the cable according to the invention requires special requirements for flame resistance, the concept "same base material for all tire elements" must be abandoned. In order to satisfy the "non corrosive" (NC) requirement (non-corrosive), i.e. the halogen-free requirement, the present invention provides a further multi-conductor, plastic-insulated low-voltage high-current cable which is characterized by what is stated in claim 7. Instead of the hitherto common outer sheath of PVC, an outer sheath based on a filler-compatible olefin homopolymer or an olefin copolymer can be used. Suitable polymers are e.g. an ethylene vinyl acetate copolymer with a VA proportion of 10-30 percent and also a black low-density polyethylene, so-called ULD-PE (density approx. 0.91 g/cm<3>), and especially non-polar copolymers such as e.g. metallocene-catalyzed polyethylene ("International Wire + Cable Symposium Proceedings", 1991, p. 397, and "Plastic" 1993, booklet 12, pages 985-987). These base materials are flame-retardant fillers in the form of aluminum oxide hydrate or magnesium hydroxide in an amount of around 30 percent by weight and between approx. 70 parts by weight and 100 parts by weight of the polymer base material. It is appropriate to use chalk as additional filler in an amount between 25% and 50% of the weight, i.e. between 50 and 100 parts by weight of the polymer's base material. The above polymer base materials are commercially available. Said non-polar copolymer is marketed e.g. by the company Dow Chemical, USA under the name "Engage" polymer and by the company Exxon, USA under the name "Exxpol". With a cable designed in this way, the hitherto usual species diversity in the materials for insulation, inner sheath and outer sheath is reduced, as the same base material is used for the insulation and for the inner sheath and only two different base materials are used in total. When such a cable is used further, these can be split and processed separately.
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19503672A DE19503672A1 (en) | 1995-01-25 | 1995-01-25 | Multi-core, plastic-insulated low-voltage power cable |
| PCT/DE1996/000106 WO1996023311A1 (en) | 1995-01-25 | 1996-01-16 | Multi-core, plastic-insulated, low-voltage heavy current cable |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO973316D0 NO973316D0 (en) | 1997-07-17 |
| NO973316L NO973316L (en) | 1997-09-25 |
| NO311998B1 true NO311998B1 (en) | 2002-02-25 |
Family
ID=7753179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19973316A NO311998B1 (en) | 1995-01-25 | 1997-07-17 | Multi-conductor, plastic insulated low voltage / high current cable |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0806048B1 (en) |
| AT (1) | ATE178736T1 (en) |
| DE (2) | DE19503672A1 (en) |
| ES (1) | ES2132873T3 (en) |
| HU (1) | HUP9800337A3 (en) |
| NO (1) | NO311998B1 (en) |
| WO (1) | WO1996023311A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6410651B1 (en) | 1997-07-23 | 2002-06-25 | Pirelli Cavi E Sistemi S.P.A. | Cables with a halogen-free recyclable coating comprising polypropylene and an ethylene copolymer having high structural uniformity |
| IT1293759B1 (en) * | 1997-07-23 | 1999-03-10 | Pirelli Cavi S P A Ora Pirelli | CABLES WITH LOW RESIDUAL RECYCLABLE LINING |
| US6552112B1 (en) | 1997-07-23 | 2003-04-22 | Pirelli Cavi E Sistemi S.P.A. | Cable with self-extinguishing properties and flame-retardant composition |
| US6372344B1 (en) | 1997-07-23 | 2002-04-16 | Pirelli Cavi E Sistemi S.P.A. | Cables with a halogen-free recyclable coating comprising polypropylene and an ethylene copolymer having high elastic recovery |
| IT1293757B1 (en) | 1997-07-23 | 1999-03-10 | Pirelli Cavi S P A Ora Pirelli | CABLES WITH RECYCLABLE COVERING WITH HOMOGENEOUS DISTRIBUTION |
| ES2294866T3 (en) | 1998-12-30 | 2008-04-01 | Prysmian Cavi E Sistemi Energia S.R.L. | CABLES WITH A RECYCLABLE COATING. |
| US6495760B1 (en) | 1999-04-03 | 2002-12-17 | Pirelli Cevi E Sistemi S.P.A, | Self-extinguishing cable with low-level production of fumes, and flame-retardant composition used therein |
| DE29906998U1 (en) * | 1999-04-20 | 1999-07-01 | Wavin Bv | Two-layer pipe |
| US6861143B2 (en) | 1999-11-17 | 2005-03-01 | Pirelli Cavi E Sistemi S.P.A. | Cable with recyclable covering |
| DE60008784T2 (en) * | 1999-11-17 | 2005-01-13 | Pirelli & C. S.P.A. | CABLE WITH REUSABLE COAT |
| CA2430426A1 (en) | 2000-12-06 | 2002-06-13 | Pirelli & C. S.P.A. | Process for producing a cable with a recyclable coating |
| EP1327664B1 (en) * | 2002-01-09 | 2012-08-08 | Borealis Technology Oy | Pigmented cable jacket comprising colour pigments |
| KR101311230B1 (en) * | 2009-03-24 | 2013-09-24 | 에스케이종합화학 주식회사 | Non-curing polyethylene composition for power cable |
| CN103854743A (en) * | 2012-11-28 | 2014-06-11 | 上海起帆电线电缆有限公司 | Fire-resisting low-smoke non-halogen cable |
| DE102022102884B4 (en) * | 2022-02-08 | 2024-03-28 | Kromberg & Schubert GmbH Cable & Wire | Multilayer foamed electrical cable |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2715349C3 (en) * | 1977-04-06 | 1980-05-22 | Chemische Werke Huels Ag, 4370 Marl | Use of partially crystalline, randomly copolymerized polypropylene for the production of insulation for electrical cables |
| DE3113506A1 (en) * | 1981-04-03 | 1983-03-03 | kabelmetal electro GmbH, 3000 Hannover | Multicore, plastic-insulated electrical power cable |
| JPS57210817A (en) * | 1981-06-23 | 1982-12-24 | Nippon Telegr & Teleph Corp <Ntt> | Manufacture of reclaimed sheathing material from waste cable sheath |
| US4401845A (en) * | 1981-08-26 | 1983-08-30 | Pennwalt Corporation | Low smoke and flame spread cable construction |
| DE3236395A1 (en) * | 1982-10-01 | 1984-04-05 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | FLAME-RESISTANT OPTICAL MESSAGE CABLE |
| DE3407414A1 (en) * | 1984-02-29 | 1985-09-05 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | FLAME-RESISTANT INSULATION MIXTURE FOR CABLES AND CABLES |
| EP0212825B1 (en) * | 1985-07-09 | 1993-09-29 | Nippon Petrochemicals Company, Limited | Flame-retardant olefin polymer composition |
| DE3620273A1 (en) * | 1986-05-17 | 1987-11-19 | Kalk Chemische Fabrik Gmbh | HEAVY-FLAMMABLE THERMOPLASTIC MOLDING MATERIALS BASED ON POLYMER BLENDS MADE OF POLYPROPYLENE-POLYETHYLENE-EPDM AND EVA-COPOLYMER AND MAGNESIUM HYDROXIDE |
| US4758629A (en) * | 1986-05-28 | 1988-07-19 | E. I. Du Pont De Nemours And Company | Thermoplastic compositions of crystalline polyolefin and ethylene-containing copolymer |
| DE3633056A1 (en) * | 1986-09-29 | 1988-04-07 | Kabelmetal Electro Gmbh | Extrudable mixture for halogen-free, highly flame-resistant coverings (sheaths) |
| DE3813200C2 (en) * | 1988-04-20 | 2003-06-26 | Kabelmetal Electro Gmbh | Thermoplastically processable plastic mixture |
| DE3833597A1 (en) * | 1988-10-03 | 1990-04-05 | Philips Patentverwaltung | FLAME RESISTANT NEWS CABLE |
| JPH06223654A (en) * | 1993-01-27 | 1994-08-12 | Hitachi Cable Ltd | Recyclable wire |
-
1995
- 1995-01-25 DE DE19503672A patent/DE19503672A1/en not_active Withdrawn
-
1996
- 1996-01-16 EP EP96900852A patent/EP0806048B1/en not_active Expired - Lifetime
- 1996-01-16 WO PCT/DE1996/000106 patent/WO1996023311A1/en active IP Right Grant
- 1996-01-16 ES ES96900852T patent/ES2132873T3/en not_active Expired - Lifetime
- 1996-01-16 HU HU9800337A patent/HUP9800337A3/en unknown
- 1996-01-16 DE DE59601605T patent/DE59601605D1/en not_active Expired - Fee Related
- 1996-01-16 AT AT96900852T patent/ATE178736T1/en not_active IP Right Cessation
-
1997
- 1997-07-17 NO NO19973316A patent/NO311998B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| HUP9800337A2 (en) | 1998-06-29 |
| DE19503672A1 (en) | 1996-08-01 |
| ATE178736T1 (en) | 1999-04-15 |
| WO1996023311A1 (en) | 1996-08-01 |
| ES2132873T3 (en) | 1999-08-16 |
| EP0806048A1 (en) | 1997-11-12 |
| DE59601605D1 (en) | 1999-05-12 |
| NO973316D0 (en) | 1997-07-17 |
| NO973316L (en) | 1997-09-25 |
| EP0806048B1 (en) | 1999-04-07 |
| HUP9800337A3 (en) | 2000-06-28 |
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| Date | Code | Title | Description |
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| MM1K | Lapsed by not paying the annual fees |
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