Keywords: Pylon.detail.arp.750pix.jpg Detail of the insulator string the vertical string of discs on a 275 000 volt suspension tower near Thornbury South Gloucestershire England United Kingdom The small pairs of black weights hanging from the line near the insulator are Stockbridge dampers ; they prevent the aeolian vibration that causes the wires to sing in the wind Photo taken by uploader 2004-09 Adrian Pingstone Released to public domain by author Arpingstone original upload log page en wikipedia Pylon detail arp 750pix jpg 2004-10-12 09 38 Arpingstone 750×536× 122091 bytes <nowiki>Pylon detail</nowiki> Electric insulators Pylons in the United Kingdom ImageNote 1 477 449 90 67 750 536 2 en conductor vibration dampers ImageNoteEnd 1 |