I am having issues with one of my buildings. I have several tenants with large server rooms with large UPS systems which record power quality issues. They also have lots of individual pc units that are not on ups. There are experiencing power drops about 3-5 time a month. Some drops are severe enough to cause the non ups protected computers to reboot loosing data. All events are loged by the data center ups's Had the local power company do a power quality survey on the building for 3 weeks and we were able to identify several incidents attributable to power grid issues,faults and cap bank switching. We compaired the monitor results to the UPS logs and discovered that some incidents could not attributed to to the power grid and could indicate possiable faulting on the secondary side. Shutting down a building of this size with the various data centers will be a nightmare in order to meger the secoundarys. Any ideas ! 1200 amp 480 feed existing secoundarys are about 20 years old.
