While more and more utilities are faced with the economical challenge of keeping their lines energized « whatever happens », it clearly appears that live line work has become a necessity. Live line maintenance requires specialized crews, equipment and procedures - at a higher cost than traditional dead line maintenance operations. However, the financial impacts compared to shutting down a line are negligible.

Before going on a hot line, maintenance crews have to make an assessment of the condition of the insulator strings. This has been recognized to be very difficult to do with porcelain (buzzing each unit...), and is sometimes impossible with composite insulators.

Who would dare take a risk when sending maintenance crews onto their towers not knowing if it is safe? Thanks to the unique properties of toughened glass, which cannot be punctured, nor be internally cracked, maintenance crews can work on live lines equipped with toughened glass insulators with no risk of “misbehaviour” of any insulator. A simple glance at the string gives a complete and reliable assessment of the condition of the insulation.

Utilities throughout the world are using SEDIVER toughened glass insulators for this reason.

There is only one possible aspect for a damaged toughened glass insulator. A simple glance is enough to know.

No internal crack or puncture is possible with toughened glass insulators.