DE632798C - Termination of a multi-conductor power cable - Google Patents
Termination of a multi-conductor power cableInfo
- Publication number
- DE632798C DE632798C DEF77759D DEF0077759D DE632798C DE 632798 C DE632798 C DE 632798C DE F77759 D DEF77759 D DE F77759D DE F0077759 D DEF0077759 D DE F0077759D DE 632798 C DE632798 C DE 632798C
- Authority
- DE
- Germany
- Prior art keywords
- cable
- cores
- termination
- power cable
- expansion cap
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/02—Cable terminations
- H02G15/06—Cable terminating boxes, frames or other structures
Landscapes
- Cable Accessories (AREA)
Description
6S27986S2798
Es ist bekannt, ein Mehrleiterstarkstromkabel mit nur einem für- alle Adern gemeinsamen Bleimantel in der Weise abzuschließen, daß das Kabel innerhalb einer Spreizkappe in seine Adern aufgeteilt wird und die aus der Spreizkappe herausgeführten Kabeladern gegen die Durchführungsöffnungen der Spreiz* kappe abgedichtet werden. Die herausgefuhr-. ten Kabeladern werden gewöhnlich mit Öl-,o leinen bewickelt. Die Spreizkappe besteht in der Regel aus Metall, während als Durchführung und Abdichtung für die Kabeladern Stopfbuchsen aus Isolierstoff oder Metall verwendet werden. Ein derartiger Kabelabschluß eignet sich für Nieder- und Mittelspannungs-It is known to have a multi-conductor high-voltage cable with only one common cable for all cores Lead sheath complete in such a way that the cable is inside an expansion cap is divided into its cores and the cable cores led out of the expansion cap be sealed against the openings in the expansion cap. The brought-out. th cable cores are usually wrapped with oil or linen. The expansion cap consists usually made of metal, while as a lead-through and seal for the cable cores Stuffing boxes made of insulating material or metal can be used. Such a cable termination is suitable for low and medium voltage
v anlagen sehr gut. In Hochspannungsanlagen, insbesondere in Anlagen über 10 KV, bereitet jedoch seine Verwendung bisher Schwierigkeiten, weil an ihm öfters Gleitfunken und Überschläge auftreten. Dies liegt daran, daß bei ihm das Verhältnis des Leiterdurchmessers zu dem äußeren Durchmesser der Aderdurchführungen sehr klein ist. Der Gradientenverlauf an der IsolatiönsoberfLäche und damit die Gleitfunkenspannung lassen sich in bekannter Weise dadurch beeinflussen, daß man anschließend an den leitenden Abschlußring der Spreizkappe einen halbleitenden Anstrich, beispielsweise aus Siliciumcarbid, vorsieht. v systems very well. In high-voltage systems, especially in systems over 10 KV, however, its use has so far caused difficulties because sliding sparks and flashovers often occur on it. This is due to the fact that with him the ratio of the conductor diameter to the outer diameter of the lead-throughs is very small. The gradient course on the insulating surface and thus the sliding spark voltage can be influenced in a known manner by applying a semiconducting coating, for example made of silicon carbide, to the conductive end ring of the expansion cap.
Ein solcher Anstrich laßt sich jedoch nur _ sehr schwer in genügender Gleichförmigkeit herstellen.However, such a coating is very difficult to achieve with sufficient uniformity produce.
Erfindungsgemäß wird deshalb vorgeschla-' gen, die äußeren Ringe der Aderdurchführungen aus einem halbleitenden Material herzustellen. Vorteilhaft wird hierfür ein Gemisch aus Kunstharz einerseits und Graphit, Siliciumcarbid oder Metallpulver andererseits verwendet. Auf diese Weise wird der Oberflächengradient "beträchtlich verringert und damit die Gleitfunkenspannung wesentlich heraufgesetzt. Ein derartiger Kabelabschluß eignet sich deshalb besonders für Hochspannungskabelanlagen. According to the invention, it is therefore proposed that the outer rings of the lead-throughs be used made of a semiconducting material. A mixture of synthetic resin on the one hand and graphite is advantageous for this, Silicon carbide or metal powder, on the other hand, is used. This is how the surface gradient becomes "considerably reduced and thus the sliding spark tension significantly increased. Such a cable termination is therefore particularly suitable for high-voltage cable systems.
Bei dem in der Zeichnung dargestellten Ausführungsbeispiel der Erfindung ist ein Kabeln innerhalb einer Spreizkappe, die aus einem trichterförmigen metallischen Teil b und einer metallischen Kappe c besteht, in seine Adern d aufgeteilt. Die Adern ^ sind aus der Spreizkappe herausgeführt und gegen die Durchführungsöffnungen mit Hilfe von Stopfbuchsen abgedichtet. Die äußeren Teile e und / dieser Stopfbuchsen bestehen erfindungsgemäß aus einem halbleitenden Material. In the embodiment of the invention shown in the drawing, a cable is divided into its cores d within an expansion cap, which consists of a funnel-shaped metallic part b and a metallic cap c. The cores ^ are led out of the expansion cap and sealed against the feed-through openings with the aid of stuffing boxes. According to the invention, the outer parts e and / of these stuffing boxes consist of a semiconducting material.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF77759D DE632798C (en) | Termination of a multi-conductor power cable |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF77759D DE632798C (en) | Termination of a multi-conductor power cable |
Publications (1)
Publication Number | Publication Date |
---|---|
DE632798C true DE632798C (en) | 1936-07-14 |
Family
ID=7112948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF77759D Expired DE632798C (en) | Termination of a multi-conductor power cable |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE632798C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2783298A (en) * | 1950-07-31 | 1957-02-26 | Phillips Petroleum Co | Cable-anchoring and sealing device |
DE1068785B (en) * | 1959-11-12 | Hoppmann &. Mulsow, Hamburg | Cable entry in housings provided with cable entry nozzles | |
DE1172342B (en) * | 1959-10-28 | 1964-06-18 | Siemens Ag | Arrangement for introducing a cable into a housing for electrical devices |
-
0
- DE DEF77759D patent/DE632798C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1068785B (en) * | 1959-11-12 | Hoppmann &. Mulsow, Hamburg | Cable entry in housings provided with cable entry nozzles | |
US2783298A (en) * | 1950-07-31 | 1957-02-26 | Phillips Petroleum Co | Cable-anchoring and sealing device |
DE1172342B (en) * | 1959-10-28 | 1964-06-18 | Siemens Ag | Arrangement for introducing a cable into a housing for electrical devices |
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