File:Barrel pylon 150 kV Waasmunster BE 2017.jpg

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English: The 150 kV line between Zele and Heimolen (St-Niklaas) in Waasmunster, East Flanders (Belgium).

A barrel pylon has three traverses with nominally two circuits. The small traverse at the top carries lightning wires. The only difference to a vertical configured pylon is the longer middle traverse, whose phase wires are at a larger distance from the tower. The advantage is that the distance between two phase positions is always maximized and remains circular symmetrical. This minimizes the effects of inductance between the phase wires and ensures each wire behaves electrically identical. When changing the phase positions, each wire has an equal load. As a result, these high-voltage lines are the most efficient and have the smallest transport loss. Also the magnetic field at the ground is narrower. In Belgium barrel pylons are widely used in the 150 and 70 kV grid.

In the background stands a vertical configured pylon from the 70 kV line Hamme–Sint Niklaas.
Nederlands: De 150 kV lijn tussen Zele en Heimolen St-Niklaas; Waasmunster, België.

Een tonmast heeft drie traversen met twee circuits. De kleine traverse bovenaan draagt twee bliksemdraden. Het enige verschil met een drievlaksmast is dat de middelste traverse langer is, zodat de fasepositie cirkelsymmetrisch is. Dit minimaliseert de inductie-effecten tussen de fasedraden onderling en zorgt ervoor dat iedere draad zich elektrisch identiek gedraagt. Bij het wisselen van de faseposities wordt iedere draad even zwaar belast. Daardoor zijn deze hoogspanningslijnen het meest efficiënt en hebben ze het kleinste transportverlies. Ook is het magneetveld aan de grond smaller. In België worden tonmasten veel gebruikt in het 150- en 70 kV-net.

Op de achtergrond zien we nog een drievlaksmast (in België dubbelvlagmast genoemd) van de 70 kV lijn Hamme–SintNiklaas.
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Source Tonmast (barrel pylon)
Author Luc.T
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
Attribution: Luc.T
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This image was originally posted to Flickr by Luc.T at https://flickr.com/photos/65015316@N07/36914621985. It was reviewed on 28 September 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.
28 September 2017
Camera location51° 07′ 16.74″ N, 4° 07′ 10.82″ E Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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current18:32, 28 September 2017Thumbnail for version as of 18:32, 28 September 20172,459 × 3,280 (3.17 MB)Te750iv (talk | contribs){{Information |Description={{en|1=The 150 kV line between Zele and Heimolen (St-Niklaas) in East Flanders (Belgium). A barrel pylon has three traverses with nominally two circuits. The small traverse at the top carries lightning wires. The only differe...

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