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David Colombo

David Colombo, P.E. is a Professional Engineer located in Massachusetts, and the owner and principal of Power Engineers, LLC, a design, engineering and consulting firm.  He has over 30 years in the electrical engineering and construction industry and is involved with the design of utility substation & distribution infrastructure, large scale renewable energy projects, and commercial / industrial power systems.  He specializes in the areas of medium-voltage design, power distribution, protection, metering, power quality, power studies and, arc flash analysis.  He also provides owner’s engineering support for developers, EPC contractors and project owners. Prior to starting Power Engineers, LLC and being an engineering consultant, he was a utility distribution supervising engineer.  He holds a Bachelor of Science degree in Electrical Engineering from Worcester Polytechnic Institute (WPI) and a Master of Engineering degree in Electric Power Engineering from Rensselaer Polytechnic Institute (RPI).  He is a Registered Professional Engineer in 13 states.

Infrared scanning for power quality problems

Harmonics: Identification and Diagnosis Detailed

May 8, 2023
How to identify, monitor, diagnose, and deal with harmonics in electrical power systems
Fig. 1. Harmonics is demonstrated by the shape of a voltage or current waveform relative to its fundamental frequency.

Harmonics: The Dreaded “H Word”

April 7, 2023
What exactly is harmonics, and why should you care?
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When Is the Power Quality Issue Not the Issue?

March 10, 2023
Case study demonstrates the importance of looking before you leap when investigating PQ problems