RO111634B1 - Energy conductor with reduced surface effect - Google Patents
Energy conductor with reduced surface effect Download PDFInfo
- Publication number
- RO111634B1 RO111634B1 RO96-00254A RO9600254A RO111634B1 RO 111634 B1 RO111634 B1 RO 111634B1 RO 9600254 A RO9600254 A RO 9600254A RO 111634 B1 RO111634 B1 RO 111634B1
- Authority
- RO
- Romania
- Prior art keywords
- wires
- conductor
- surface effect
- effect
- energy conductor
- Prior art date
Links
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
- H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
- H01B7/303—Conductors comprising interwire insulation
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- Non-Insulated Conductors (AREA)
- Insulated Conductors (AREA)
Abstract
Description
RO 111634 Β1RO 111634 Β1
Invenția se referă la un conductor de energie cu efect pelicular redus, destinat instalațiilor, mașinilor, utilajelor și aparatelor electrice cu ajutorul cărora se realizează transportul, distribuția și utilizarea energiei electrice.The invention relates to an energy conductor with reduced film effect, intended for installations, machines, machines and electrical devices with the help of which the transport, distribution and use of electricity is carried out.
Sunt cunoscute și larg utilizate conductoarele electrice metalice (cupru, aluminiu, oțel), în execuție unifilară sau multifilară, care însă prezintă dezavantajul că în curent alternativ apare efectul pelicular (ușor atenuat la conductoarele multifilare torsadate), care practic este deosebit de pronunțat și se manifestă cu atât mai pregnant, cu cât crește secțiunea conductoarelor și frecvența de lucru. Datorită efectului particular conductoarele se încălzesc suplimentar, necesitând astfel o dimensionare a secțiunilor disproporționat de mare în raport cu valorile curenților parcurși.Metallic electrical conductors (copper, aluminum, steel), in single-wire or multi-wire execution, are known and widely used, but they have the disadvantage that in alternating current the film effect appears (slightly attenuated in twisted multi-wire conductors), which is practically particularly pronounced and it manifests all the more meaningfully, the higher the section of the conductors and the working frequency. Due to the particular effect, the conductors heat up additionally, thus requiring a dimensioning of the sections that is disproportionately large in relation to the values of the currents passed.
Invenția înlătură dezavantajul menționat prin aceea că, pentru reducerea efectului pelicular se face o divizare a secțiunii conductoarului, prin execuția multifilară a acestuia, din mai multe fire metalice subțiri, acoperite fiecare la exterior cu o peliculă electroizolantă, realizând astfel reducerea efectului pelicular atât datorită circulației curentului prin fire conductoare de secțiune redusă, cât și datorită refulării curentului spre centrul secțiunii firelor ce sunt înconjurate de alte fire, ca urmare a efectului de proximitate ce se creează între ele, fiind parcurse de curenți de același sens, prin legarea lor în paralel.The invention removes the mentioned disadvantage in that, in order to reduce the film effect, a division of the conductor section is made, through its multifilar execution, from several thin metal wires, each covered on the outside with an electro-insulating film, thus achieving the reduction of the film effect both due to the circulation of the current through conductive wires of reduced section, as well as due to the repulsion of the current towards the center of the section of the wires that are surrounded by other wires, as a result of the proximity effect created between them, being traversed by currents of the same direction, by connecting them in parallel.
Conductorul de energie cu efect pelicular redus, conform invenției, prezintă avantajul că prin utilizarea lui se obține o creștere însemnată a puterilor transportate pe unitatea de secțiune a conductorului și, în consecință, costuri de investiții sensibil mai reduse în transportul, distribuția și utilizarea energiei electrice.The energy conductor with reduced film effect, according to the invention, presents the advantage that by using it a significant increase in the powers transported per unit section of the conductor is obtained and, consequently, significantly lower investment costs in the transport, distribution and use of electricity .
Se dă în continuare un exemplu de realizare a invenției, în legătură cu figura ce reprezintă o secțiune transversală printr-un tip de conductor cu utilizare în instalații fixe, conductoare pentru conexiuni, cabluri și cordoane electrice.An example of an embodiment of the invention is given next, in connection with the figure which represents a cross-section through a type of conductor for use in fixed installations, conductors for connections, cables and electric cords.
Conductorul conform invenției este compus din mai multe fire metalice (cupru, aluminiu, oțel)subțiri 1, cu rol de a conduce curentul electric fără un efect pelicular pronunțat ca urmare a secțiunii reduse a firelor, acoperite fiecare cu un strat pelicular izolant 2, ce are rolul de a separa galvanic firele conductoare între ele, și un strat exterior izolant 3, cu rol de izolație obișnuită a conductoarelor. Prin această construcție, firele metalice, ale fiecărui conductor, se leagă în paralel și vor fi parcuse de curenți de același sens, obținându-se, pentru firele înconjurate jur împrejur de alte fire, o reducere a efectului pelicular și în interiorul lor, prin refularea curentului spre centrul secțiunii acestor fire, datorită efectului de proximitate ce se creează între ele.The conductor according to the invention is composed of several thin metal wires (copper, aluminum, steel) 1, with the role of conducting the electric current without a pronounced film effect as a result of the reduced section of the wires, each covered with an insulating film layer 2, which it has the role of galvanically separating the conductive wires from each other, and an outer insulating layer 3, with the role of ordinary insulation of the conductors. Through this construction, the metallic wires of each conductor are connected in parallel and will be passed by currents of the same direction, obtaining, for the wires surrounded all around by other wires, a reduction of the film effect and inside them, by repulsion of the current towards the center of the section of these wires, due to the proximity effect created between them.
Pentru alte utilizări, aceste conductoare se pot executa și fără stratul izolant exterior mănunchiului de fire, spre exemplu pentru bobinaje electrice și pentru linii electrice aeriene.For other uses, these conductors can also be made without the outer insulating layer of the bundle of wires, for example for electrical windings and overhead power lines.
Stratul electroizolant pelicular ce acoperă fiecare fir metalic din componența acestor conductoare va avea o grosime cât mai mică, realizabilă tehnologic, și va conta din emailuri, oxizi metalici sau alte materiale electroizolante, ce se pot depune în pelicule și pot realiza o separare galvanică între fire, în funcție de destinația fiecărei categorii de conductoare.The film electro-insulating layer that covers each metal wire in the composition of these conductors will have the smallest possible thickness, technologically achievable, and will consist of enamels, metal oxides or other electro-insulating materials, which can be deposited in films and can create a galvanic separation between the wires , depending on the destination of each category of conductors.
De asemenea, diametrul firelor metalice va fi cât mai mic, ales în limitele date de condițiile specifice impuse de normative, fiecărei categorii de conductoare.Also, the diameter of the metal wires will be as small as possible, chosen within the limits given by the specific conditions imposed by the regulations, for each category of conductors.
La realizarea legăturilor conductoarelor (în tablorui, derivații, la bornele mașinilor și aparatelor) se va îndepărta stratul izolant de pe firele metalice pe o lungime adecvată prin răzuire sau chimic, realizând astfel o conectare în paralel a firelor fiecărui conductor electric.When connecting the conductors (in switchboards, derivations, at the terminals of machines and devices), the insulating layer will be removed from the metal wires on an appropriate length by scraping or chemically, thus making a parallel connection of the wires of each electrical conductor.
Claims (1)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO96-00254A RO111634B1 (en) | 1996-02-13 | 1996-02-13 | Energy conductor with reduced surface effect |
PCT/RO1996/000013 WO1997030460A1 (en) | 1996-02-13 | 1996-12-03 | Electrical power conductor with low skin effect |
AU11124/97A AU1112497A (en) | 1996-02-13 | 1996-12-03 | Electrical power conductor with low skin effect |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RO96-00254A RO111634B1 (en) | 1996-02-13 | 1996-02-13 | Energy conductor with reduced surface effect |
Publications (1)
Publication Number | Publication Date |
---|---|
RO111634B1 true RO111634B1 (en) | 2004-07-30 |
Family
ID=20103311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RO96-00254A RO111634B1 (en) | 1996-02-13 | 1996-02-13 | Energy conductor with reduced surface effect |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU1112497A (en) |
RO (1) | RO111634B1 (en) |
WO (1) | WO1997030460A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102070214B1 (en) | 2012-07-05 | 2020-01-28 | 그린 이엘엠에프 케이블 리미티드 | Electric cables having self-protective properties and immunity to magnetic interferences |
FR3006099B1 (en) * | 2013-05-22 | 2015-05-08 | Nexans | ELECTRICAL CABLE COMPRISING AT LEAST ONE ELECTRICALLY INSULATING LAYER |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3530032A1 (en) * | 1985-08-22 | 1987-02-26 | Reiner Mannertz | Current-carrying cable |
-
1996
- 1996-02-13 RO RO96-00254A patent/RO111634B1/en unknown
- 1996-12-03 AU AU11124/97A patent/AU1112497A/en not_active Abandoned
- 1996-12-03 WO PCT/RO1996/000013 patent/WO1997030460A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO1997030460A1 (en) | 1997-08-21 |
AU1112497A (en) | 1997-09-02 |
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