Total Harmonic Distortion (THD) is a way of quantifying the amount of harmonic content in a voltage or current waveform. In addition to measuring the amount of distortion, THD can…
White Papers
Browse our library of power quality technical resources.
414 white papers
Choosing a Cell Plan for Boomerangs
Power Monitors offers a variety of Boomerang products that come with varying measurement capabilities and varying cellular carrier data plans for reporting this measured data. This white paper is going…
Batch Converting XSF Data Files
ProVision, PMI's Power Quality Analysis PC software, has undergone several overhauls and upgrades over the past several years. During this time, a number of different file formats and file types…
Email Alerts with Canvass
Canvass is a feature-rich data analysis web application and database developed by Power Monitors, Inc. to provide a complete RMS voltage picture to users via any device equipped with an…
Voltage and Current Out of Limits Reports
This white paper covers Out of Limits Reports, their main benefits, and how and when to use them. Out of Limits Reports offer a quick way to gauge power quality…
The True Cost of Low Energy Lighting
During President George W Bush's administration a congressional bill was enacted in December of 2007 called the Federal Independence and Security Act (H.R 6), which called for a ban on…
Browser Choices with Canvass
Power Monitors, Inc. Canvass supports all the major browsers, including Microsoft Internet Explorer (IE) 7-9, Mozilla Firefox, Google Chrome, and Apple Safari. The browser, device-type, and data connection chosen will…
Understanding IEEE Flicker, IFL, Pst, Plt
This white paper covers and explains three of IEEE's most common Flicker definitions: IFL, Pst and Plt. The GE Flicker Curve and how other measurements standards compare to the GE…
Measuring Frequency with PMI Recorders
Line frequency is the most tightly controlled parameter in the electrical distribution system. Since almost all generation in a region is connected essentially in parallel, the frequency is inherently synchronized…
New Additions to the Canvass Interface
Power Monitors, Inc. Canvass, our web based electrical data analysis software, has recently been upgraded with many new features. New features include: A new menu window, a Canvass message inbox,…
Monitoring a 2½ Element Wye
A 2½ Element WYE Configuration uses 3 current phases and 2 voltage phases to calculate what is on the third voltage phase in order to measure the total power on…
Daily Profile Graphs in ProVision
Daily Profiles are used to spot daily trends in voltage, current, power factor, etc. An entire recording session is combined to form the "average" 24-hour day, which is then plotted…
