The Boomerang family of wireless monitors all utilize a cellular modem to provide a remote data connection. This makes remote monitoring very convenient but it does require the installer to…
Products White Papers
Power quality white papers on Products.
295 white papers in Products
Vector Diagrams for Commonly Used Power Circuits
This white paper describes vectors and vector diagrams. It provides the vector diagrams and sketches of the connections required for correctly installing a power monitor on commonly used power circuit…
Analyzing Apparent and Reactive Power Using Canvass
Canvass, PMI's cloud-based data analysis portal, has recently been upgraded to provide the facilities for apparent and reactive power analysis for plug-in and meter-socket form 2S Boomerangs. This white paper…
Calculating Interharmonics with Raw Waveform Data
The Revolution PQ recorder can compute interharmonics in real-time, and also record each one individually as a stripchart. Each harmonic and interharmonic group and subgroup, as defined by IEC 61000-4-7,…
Ring Frequency, PF and CF from Waveform Capture
With the Point Table in the Waveform Capture function of ProVision, it is possible to estimate the ring frequency, phase shift, power factor, and crest factor of a waveform.
Keyboard Shortcuts for PMI Software
Both ProVision and Canvass offer a wide array of user input options. These options range from mouse use to keyboard inputs. Specific keystroke inputs are typically referred to as "shortcut…
Two Minute Countdown
Prior to recording, PMI recorders have a countdown interval of time used for initialization called the "Two Minute Countdown". This period of time is used to verify proper hookup, change…
Understanding Vector Diagrams
This whitepaper will discuss what vector diagrams are, what they display, and how PMI's power quality recorders and ProVision can provide the user with this information.
Understanding Recording Modes
Recorders connected in ProVision have two primary modes: Standby mode and Ready mode. Each of these modes has a distinct purpose, and some recorder operations in ProVision require the recorder…
Using 3D Graphs in ProVision
Power quality data in ProVision is presented in two distinct formats: as either a text-based report, or as a graphical image. The latter category, referred to in ProVision as graphs,…
Per-Unit Graphing with Canvass
Canvass is a web-based power quality portal designed and developed by PMI to allow users to perform power quality analysis from anywhere they have an internet connection and a web…
Case Study: Impact of Solar Photovoltaic Installations
2012 was a historic year for the U.S. solar industry. There were 3,313 megawatts (MW) of photovoltaic (PV) capacity installed throughout the year, which represents 76% growth over 2011’s record…