Power Quality & Reliability
Understanding why current and voltage deviate from a pure sinewave, how it affects electrical systems, and best practices for dealing with the non-linear loads that cause them
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The Ferroresonance Phenomenon
Nov. 13, 2023
Harmonics: Mitigation Techniques
July 10, 2023
Harmonics: Identification and Diagnosis of Data
June 11, 2023
Harmonics: Identification and Diagnosis Detailed
May 8, 2023
When Is the Power Quality Issue Not the Issue?
March 10, 2023
Matrix Air EC Motor Filter
July 11, 2022
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The Top 5 Myths About Portable Metering
Feb. 7, 2022
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Electrical Troubleshooting Quiz — Aug. 3, 2021
Aug. 3, 2021
How to address a scary power quality report
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ECM’s Monthly Quiz: Power Quality Puzzles
March 2, 2021
Take this quiz to see how much you know about power quality, and enter for a chance to win a $25 gift card to Amazon, Cabela's, or iTunes!
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Check That UPS
Oct. 13, 2020
These systems store energy, typically in a battery, and then release that energy when needed.
Where Is That Harmonic Source?
Sept. 22, 2020
Electrical current can point to a device that’s causing problems on a power system, but this isn’t always the case when there’s a harmonics issue.
Follow the Current
Sept. 8, 2020
Unless you have a harmonic issue, the electrical current usually leads the investigation to the source of the problem.
Download: Applying Effective Lighting and Control Solutions
July 21, 2022
From the EC&M e-books library: A compilation of technical articles from EC&M.
Special Report: Electric Vehicle Infrastructure
March 29, 2022
Join EC&M's Members-Exclusive Portal
Feb. 5, 2021
Electrical Troubleshooting Quiz — Aug. 18, 2020
Aug. 18, 2020
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Fix Frustration Factors — Part 6
Aug. 4, 2020
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Electrical Troubleshooting Quiz — Aug. 4, 2020
Aug. 4, 2020
The Case of the Chiller Fuse Failures
July 14, 2020
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Electrical Troubleshooting Quiz — July 7, 2020
July 7, 2020
What to do when a custom-built production machine with recycled parts keeps breaking down
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Delinquent ASD Causes Havoc on PV System
May 26, 2020
Unusual fault code leads to the true culprit of a power quality dilemma
How Are Your Harmonics?
Nov. 7, 2016
A good harmonic analyzer will show you graphically the breakdown of your component harmonics.
How to Reduce Energy Waste Before You Spend Money on an Audit
March 3, 2016
You don't have to wait for an audit to identify ways to cut energy costs
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