One of the most useful methods for examining specific power quality activity is through filtered predesignated reports. At PMI we've achieved this with our "Significant Change Report." The primary use…
White Papers
Browse our library of power quality technical resources.
447 white papers
Hardware for Power Quality and Distribution Monitoring
PMI offers an array of monitoring devices for just about any utility distribution monitoring need. Data needs, location, and communications requirements are all factors involved in selecting the right monitor…
Software to Diagnose Power Quality Issues
Data analysis is the key to understanding and solving engineering problems on the distribution system. PMI offers three types of software tools to speed the analysis process, and help manage…
Upgrading ProVision
ProVision, the power quality diagnostic software provided by Power Monitors, is consistently maintained and updated as new features are added and existing ones are updated. Some of these are minor,…
Municipal Golf Course Suffers Catastrophic Damage From Overheated Neutral
In this modern world of power we see more and more desire to improve efficiency and reduce costs, which leads to decisions on what equipment to choose to meet these…
Adjusting Waveform Capture Sampling Rates
Waveform capture is one of the most important data types available for PQ analysis. The sample-level data provides detailed information for voltage disturbances such as oscillatory transients, notches, sub-cycle overvoltages…
Voltage Notching Effects on Harmonic Distortion
Notching is a voltage waveform distortion resulting from short-duration high current pulses. These distortions typically present themselves graphically as a “notch” in the time domain representation of the waveform. The…
Understanding Variable Frequency Drives
This paper covers what a variable frequency drive (VFD) is, the different types of VFDs, their functions, and their benefits. Also covered are issues related to VFDs, some solutions to…
Seven Common Utility Distribution Challenges: How the Boomerang and Canvass Can Help
Here's our quick list of 7 common utility distribution challenges. These shouldn't come as a surprise to anyone in the industry as utility companies are experiencing more challenges than ever.…
Sampling Rate in PQ Recorders
A common specification in power quality recorders such as PMI's Revolution, Guardian, or Eagle products is the sampling rate of the device. Users know this is an important number and…
Automatic Update Manager
When software products were first created, it was common to only release a final version, simply due to the overhead of distributing the products via physical medium. However, with the…
Using Current Clamps
Measuring the current of residential, commercial or industrial applications is vital to get a complete power quality picture. This white paper covers various topics to effectively utilize the different types…