A couple of questions here too Max. 1. Why glass insulators on the lightning suppressor feeds rather than ceramic? Does the glass withstand the high voltage during a lightning surge better than ceramic? 2. Do the MOV suppressors ever fail catastrophically as did the ceramic insulators you pictured? What kind of peak currents are we talking about here during a strike?
#1 C Kronenwetter on 2013-02-09 09:43
Peak current amplitudes are in the tens of kilo-Amps. Every lightning stroke is different, and a distribution graph of peak current amplitudes shows a greater than 90% probability for a 0 to 20 kA peak, and about a 60% chance of a 40 kA peak.
#2 Utility guy on 2013-03-05 18:01
Add Comment

E-Mail addresses will not be displayed and will only be used for E-Mail notifications

To prevent automated Bots from commentspamming, please enter the string you see in the image below in the appropriate input box. Your comment will only be submitted if the strings match. Please ensure that your browser supports and accepts cookies, or your comment cannot be verified correctly.

Submitted comments will be subject to moderation before being displayed.