Author Topic: Snow on the A 22Kv cabel..  (Read 1341 times)

0 Members and 1 Guest are viewing this topic.

Offline ErikTheNorwegian

  • Frequent Contributor
  • **
  • Posts: 461
  • Country: no
  • Asberger, aspi, HIGH function, nerd...
Snow on the A 22Kv cabel..
« on: January 13, 2013, 08:05:32 pm »
The most snow on a electrical cable was accumulated in Norway back in 1961.
On the 22kV cable in Voss, norway, it accumulated 1,5 meter with snow and ice. The pictures are from Lønahorgi, 1410 metre over the sea. Every meter of ice wegth 305 kilo. 

That is equivalent with a WV beadle hanging side by side. The reason for the accumulation of ice that the cable itself was free spinning  around it own center, allowing the ice to form equally around the cable without breaking of. If the cable was not spinning, the ice would have formed a wing like structure and broken off.

After this they changed the way og putting up cabel in the montains.




« Last Edit: January 13, 2013, 08:14:46 pm by ErikTheNorwegian »
/Erik
Goooood karma is flowing..
 

Offline M. András

  • Super Contributor
  • ***
  • Posts: 1020
  • Country: hu
Re: Snow on the A 22Kv cabel..
« Reply #1 on: January 13, 2013, 09:21:21 pm »
this is amazing, i wonder the poles and the holders didng gave up due to the extra weight. and no flashover
 

Offline G7PSK

  • Super Contributor
  • ***
  • Posts: 3708
  • Country: gb
  • It is hot until proved not.
Re: Snow on the A 22Kv cabel..
« Reply #2 on: January 13, 2013, 09:35:04 pm »
I guess that proves that ice is a poor conductor of electricity as well as heat. Also proves how well the lines were engineered for such conditions.
 


Share me

Digg  Facebook  SlashDot  Delicious  Technorati  Twitter  Google  Yahoo
Smf