We would like to test the reliability of various UPS's before we make a large investment.
I'd like to look at:
-- Switching time (if not inline)
-- Steady state load test at 0%, 50%, and 100% load, including input and output conditions (voltage/current/frequency)
-- DC to AC efficiency (hrs/VA w/no load)
-- Harmonic output
Has anyone done tests on UPS's before? Anyone have any ideas on how to properly set these tests up so I don't fry anything or cause undue damage to my test UPS's?
Thanks for your help! ~ Andrew