AT122388B - Process for increasing the current carrying capacity of aerial cables. - Google Patents
Process for increasing the current carrying capacity of aerial cables.Info
- Publication number
- AT122388B AT122388B AT122388DA AT122388B AT 122388 B AT122388 B AT 122388B AT 122388D A AT122388D A AT 122388DA AT 122388 B AT122388 B AT 122388B
- Authority
- AT
- Austria
- Prior art keywords
- carrying capacity
- increasing
- current carrying
- aerial cables
- cables
- Prior art date
Links
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Erhöhung der Strombelastbarkeit von Luftkabel.
Die höchstzulässige Strombelastung eines Starkstromkabels ist abhängig von der Erwärmung des
Kupferleiters bei Dauerbelastung. Bei gegebener Belastung und gegebenen Kabelabmessungen sind für die Erwärmung die Wärmeableitungsverhältnisse massgebend. D : ese sind bei Kabeln, die im Erdboden verlegt sind, besser als bei Luftkabel. Mit Rücksicht hierauf soll nach den in den meisten Ländern bestehenden Vorschriften elektrotechnischer Verbände die Belastung bei Luftkabel auf 75% derjenigen Werte ermässigt werden, die für im Erdboden verlegte Kabel als zulässig angegeben sind.
Nach dem Vorschlag der Erfindung soll die Strombelastbarkeit der in der Luft verlegten Kabel oder der aus der Erde herausragenden Enden von Erdkabeln ohne Änderung des Kupferquerschnittes und ohne einen Eingriff in die Konstruktion des Kabels nachträglieh erhöht werden, d. h. an Stellen, welche sich erst aus der Montage des Kabels ergeben. Zu diesem Zwecke soll die Kabeloberfläche, bzw. der Bleimantel mit Kühlrippen versehen werden, deren Flächen in Ebenen liegen, die durch die Mittellinie des Kabels gehen, bzw. in zu diesen parallelen Ebenen, oder die als konzentrisch zum Kabel und
EMI1.1
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for increasing the current carrying capacity of aerial cables.
The maximum permissible current load of a power cable depends on the heating of the
Copper conductor under constant load. With a given load and given cable dimensions, the heat dissipation conditions are decisive for the heating. D: ese are better for cables that are laid in the ground than for aerial cables. With this in mind, according to the regulations of electrotechnical associations existing in most countries, the load on aerial cables should be reduced to 75% of those values that are specified as permissible for cables laid in the ground.
According to the proposal of the invention, the current-carrying capacity of the cables laid in the air or the ends of underground cables protruding from the earth should be subsequently increased without changing the copper cross-section and without interfering with the construction of the cable. H. at points that only arise from the installation of the cable. For this purpose, the cable surface or the lead sheath should be provided with cooling fins, the surfaces of which lie in planes that go through the center line of the cable, or in planes parallel to this, or that are concentric to the cable and
EMI1.1
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE122388X | 1928-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT122388B true AT122388B (en) | 1931-04-25 |
Family
ID=5657338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT122388D AT122388B (en) | 1928-09-26 | 1929-07-09 | Process for increasing the current carrying capacity of aerial cables. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT122388B (en) |
-
1929
- 1929-07-09 AT AT122388D patent/AT122388B/en active
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