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Typical Life Expectancy of Electrical Switchgear

Typical Life Expectancy of Electrical Switchgear

Typical Life Expectancy of Electrical Switchgear

(OP)
I have seen some various references to typical life expectancies of electrical switchgear, including IEEE 493 and NFPA 70B.  However, an earlier thread mentioned two papers which no longer link, including:

http://www.ise.nus.edu.sg/proceedings/apors2000/fullpapers/17-01-fp.htm
http://www.siemenstd.com/prods/mv/techtopics/TechTopics15Rev0.pdf

Does anyone have these papers or know where they link to now?  And would anyone have better, more recent papers discussing this topic?

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