Given the rate at which technology and computers are improving, sometimes it is necessary to phase out an existing system in favor of a newer one. However, if the previous…
White Papers
Browse our library of power quality technical resources.
432 white papers
Types of Boomerang Units
This white paper is a technical explanation of the form, fit and function of Boomerang PQ monitors. These units are intended to assist utility companies in troubleshooting and maintaining their…
Understanding IEEE IEC Flicker Processing
Flicker measurement has improved dramatically with the advent of the flicker measurement techniques described in IEEE-1453/IEC61000-4-15. It is a feature found in many power quality monitors that makes flicker measurement…
Histogram Statistics in Canvass
Histograms in Canvass are powerful, yet underused graphs. In addition to presenting measured data visually, a list of histogram statistics are also computed by Canvass. Histogram graphs in Canvass compute…
Loose Neutral Graph Template
A "flickering lights" customer complaint may be the first symptom of a dangerous loose/open neutral. Loose neutrals can cause high voltage equipment damage, and in extreme cases, excessive current flow…
Configuring a Virtual Private Network
The use of telemetry devices equipped with cellular modems for low-bandwidth measurement and data collection has soared in recent years. There are many aspects to a successful deployment of cellular…
Networking the Ethernet Boomerang
PMI's Ethernet Boomerang monitors can be powered over Ethernet for real-time voltage, current, and power monitoring. The Ethernet Boomerang allows quick connection and communication over a company's network, without incurring…
New Graph Templates for Distributed Generation
The use of distributed generation (DG), e.g. photovoltaic and wind farm systems, presents new challenges to the electric network. Unpredictability and sudden changes in generated power results in changes in…
Detecting Recloser Events with Boomerang Monitors
Boomerangs provide advanced triggering mechanisms that can be used to detect and send an alert for Recloser events. A "Voltage Low Low" event will be used to trigger an alert,…
Finding the Source of Harmonic Problems
This white paper explores the feasibility of using a common measurement point between the source and load to determine the source of harmonics using only harmonic phase angle. Finding the…
Understanding Parametric Graphs
Parametric graphs present a little-seen view of load waveforms. By graphing the current waveform against the voltage, a voltage-independent load signature can be established. This is useful for characterizing load…
Recording Harmonics
There are three primary recording types for harmonics in PMI recorders: stripcharts, daily profiles, and waveform capture harmonic analysis. Each of these has specific pros and cons, and setup considerations…
