Thanks for the reply.
I wish that we could get a good power quality recording when they do a generator test but unfortunately the sudden change in frequency seems to mess up the data. The manufacturer of our recorder confirmed that this could be an issue so I really don't have any good data on...
I have been investigating a potential power quality issue at a facility that has been losing multiple UPS devices in one of their server rooms. They were unable to tell me if these failures coincided with any particular event but they believed the issue was on the utility side due to "high...