What is Power Quality?

The term power quality refers to a set of boundaries that allow electrical systems to function in their intended manner; in other words, it is the electric power that drives an electrical device and the device’s ability to function properly.


Without the proper power, an electrical device may malfunction, fail prematurely or not operate at all. When discussing power quality, there are several areas of concern you can be talking about like the continuity of service, variation in voltage magnitude, transient voltages and currents, or the harmonic content in the waveforms.


There are many causes that can lead to different types of poor power quality. 

  • Voltage sags and surges
  • Momentary power interruptions
  • Extended power interruptions
  • Harmonic distortion
  • Ground loops
  • High-speed transients
  • Electrical noise
  • Lightning damage or lack of preparedness


The knowledgeable professionals as Energy Control Systems are ready to assist in identifying problems and analyzing your facility to find the right solution to address these problems.