Root cause analysis

Power quality problems are most associated with electrical distribution systems and equipment connected to circuits. It is easy to write the symptoms off as being associated with old breakers or as just a one-time reset, but when the problems continue, what do you do then?

Root cause analysis of power quality problems starts with the desire to get to the primary problem and solve it. With power quality issues, start by looking for harmonics, unbalance, or disturbance patters. Voltage and current anomalies can produce problems, too.