Home » Topics » English riddles » General Subjects » Electrical question no.18 – Electrical HV Transmission lines

Electrical question no.18 – Electrical HV Transmission lines

  • Creator
    Topic
  • #173
    Ravi Perera

    Dear,
    Why the shape of ball type items are fixed on earth screen cables top of power transmission lines? Please Explain?

Viewing 3 replies - 1 through 3 (of 3 total)
  • Author
    Replies
  • #1365
    Hamid

      It is warning alarm for helicopter and other fliers.

      #1593
      Dr.D

        It is a housing that covers a vibration damper to reduced wind driven vibration of the line.

        #1596
        Hamid

          That mentioned ball cannot damp vibration of wire; in opposite creation of vibration due to wind resistance is one of its disadvantages. Please note, we usually see that warning ball on transmission line in crossing autobahn which the emergency landing of airplanes or other flyer is possible.

        Viewing 3 replies - 1 through 3 (of 3 total)
        • You must be logged in to reply to this topic.