Low Surge Energy Rating even for expensive Smart Online UPS's ... Why ?
This was originally posted on APC forums on 3/8/2015
I'd like to know why most (if not all) APC Smart Online UPS's have such low Surge Energy Ratings ?! Considering that these UPS's cost $2000 ~ $3000 a piece, one would expect them to have an exceptionally high Surge Energy Rating, higher than most common cheap surge protectors available in the market. But this is not so.
For example, THIS (need to click here) UPS only has a 480 Joules Surge Energy Rating, but the following cheap surge protectors offers almost 10 times the Surge protection, but only cost a fraction: