As a best practice, facility personnel should carefully examine the health of their electrical power systems on a regular basis. With the quality of test instruments available today, you have the ability to choose tools at all levels of price and performance.
While it was only possible to monitor in the millisecond time range a few years ago, today’s electrical test equipment is able to split the millisecond and examine microsecond samples of data. Now there is potential to examine the nature of power quality problems, capture a disturbance event and connect it directly to an operation at the facility.
So, why is this performance increase important? It’s critical because findings show that very high-speed disturbances are the culprits in many power quality and/or reliability problems. However, if the event can’t be captured it is most likely you won’t know what caused an upset in the system.
Finding the cause of a power quality problem takes some serious effort. Prior to conducting a site analysis, become familiar with the site, its power distribution and its loads.