How Does a UPS handle "dirty power, surges, etc?
Posted on 2009-05-19
About 3-4 weeks ago, I worked on PC that would simply power off in an orderly fashion. The UPS unit was constantly beeping which meant the battery was exhausted. I noticed the native UPS service in event viewer was shutting down due to a perceived power outage. It would constantly shut down the PC even if I bypassed the UPS unit and plugged directly into a simple power strip.
I disabled the service as I noticed APC had installed its on UPS service. I thought there might possibly be some type of conflict. I replaced the UPS with another APC model and everything seemed to be fine for 3-4 weeks.
I received a call today saying the computer had started to shutdown 1-2 maybe 3 times per day. This is exactly how it started before until it got to the point it was shutting down immediately after startup.
The girls who work there say they regularly trip the breakers and have even seen sparks fly from the breaker box. One of their husbands who is somewhat electrically literate swears they have some kind of power issue there. I did notice that the APC software reported 53 incidents of dirty power over a week period. I don't know how serious "dirty" power is, if at all?
Does anyone have any idea what may be causing this. I have not returned yet but I have a strong feeling the UPS battery has become exhausted from constantly being used and is shutting down the computer again. I guess my big question is why is it constantly switching to battery power? Would a UPS switch to battery if there is a continuous surge coming into it or if there is some other problem with the quality of the electricity?
Bear in mind I dont know a lot about electrical issues. Im just trying to use logic here. Any advice would really be appreciated.