Stevenal, is it cheap insurance if the benefit is rarely seen? The reason I ask, is that we've been NOT using elbow arresters on 12kV URD systems for probably 15 years or more, and there really hasn't been many issues. However, it's impossible to say what state the cable is in at this point...
I have continued my research on this topic and have found great information, but still have some questions/concerns.
I've found that we don't use them currently, due to the fact the doubled wave magnitude ends up being around 60kV, and the transformer BILs are 95kV (for the 12kV system)...
Thanks for the reply as usual Magoo,
Can you expand a bit and/or point me to some additional resources? I will likely need to provide recommendation to a director for this within a week or so and would like to have a firm understanding on what I am recommending.
In reference to URD (underground distribution) loops, we currently install arresters at the "open point" of the loop for our 35kV lines. However currently we do not do so for our 12kV lines. Would it be recommended to do so, and if so, why?
Thanks for all the book recommendations. I intend to look into them.
Magoo2, when the .22 isolator disconnects the ground lead, after the arrester experiences a surge that overwhelms it (from my understanding), that means the arrester is no longer functional (since it can no longer divert the...
I got a job with an Electric Utility company and haven't been given a ton of direction/training, and am finding I'm having to study/train on my own to understand the various parts of the distribution system. I've looked at several websites and powerpoints that give BROAD overviews, but am...
