PMI recorders are capable of storing a large amount of data. The recording setup stored in the device determines the data that will be captured during a recording session as…
White Papers
Browse our library of power quality technical resources.
408 white papers
Disconnecting a Power Quality Recorder
This whitepaper covers the proper method used to disconnect power quality recorders and remove them safely from their location. Following the proper disconnection sequence eliminates or minimizes generating and recording…
Plotting PQ Events on the CBEMA – ITIC Curve
The CBEMA and ITIC curves are used to show voltage events. Some PMI recorders can record these events and then ProVision can be used to plot these events on the…
Stripchart Graphing in Canvass
The Boomerang is a device developed by Power Monitors for the purpose of allowing continuous monitoring of voltage, current, and power data. The Canvass web application and data storage service…
Per-Unit Analysis with ProVision
A per-unit scaling system simplifies many AC power analysis tasks. Eliminating transformer ratios, normalizing power values to equipment ratings, and allowing for like-to-like comparisons of differing nominals are just three…
Getting Started with the NMS
The NMS (or Network Management Software) is a lightweight Java Desktop Application produced by PMI for the bulk configuration of Boomerang voltage/current/power monitors. This document aims to provide the user…
Estimating THD with Power Factor Histograms
In the previous whitepaper Estimating THD with PF and DPF, a technique for estimating THD was shown given power factor and displacement power factor stripchart data. In many case, there's…
Analyzing Voltage Sags with RMS Capture
This white paper covers the topic of voltage sags and a sometimes under-used graphing feature in Provision called the RMS Capture graph. The RMS Capture graph can be very revealing…
Using the Revolution for IEEE 519-2014 Harmonic Studies
This paper will cover how to use a PMI Revolution recorder to verify compliance according to the IEEE 519-2014 harmonic standard. Recommended initialization settings and data analysis techniques are reviewed,…
Provisioning Boomerangs with a cellular data plan for Canvass and/or SCADA Systems
The Boomerang is one of the newest power quality measurement offerings by PMI. Capable of measuring voltage, current and real power, the Boomerang comes in multiple different measurement configurations and…
Interharmonic Recording and Data Analysis
Interharmonics are one of the most complex power quality quantities to measure and analyze. The concepts are advanced, the terminology is confusing, the raw data is voluminous, and the interpretation…
Case Study: Electric Tankless Water Heaters and Power Quality
In this case study, an investor-owned utility responded to a residential customer complaint. The root cause was a newly installed electric tankless water heater, requiring a transformer upgrade beyond the…
