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…
White Papers
Browse our library of power quality technical resources.
414 white papers
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,…
Understanding the Harmonic Analysis Report
Harmonics are distortions in the 60Hz voltage or current caused by non-linear loads on the system. Harmonics are of interest to utilities as they can cause damage to equipment, such…
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…
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…
Monitoring Variable Frequency Drives
Variable Frequency Drives (VFDs) are increasingly common, especially with the push for energy efficiency (in residential applications) and better motor control (in industrial applications). Unfortunately, the gains made with VFDs…
Choosing a Revolution Cell Plan
The Cell-Modem Revolution contains an embedded cellular modem allowing for network-based communication from any internet connected PC. The purpose of this white paper is to help the user determine the…
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.
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,…
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…
Analyzing Motor Startups with Event Capture
This paper describes how Event Capture can be used to analyze motor startups and covers the typical initial settings for capturing and analyzing a motor startup. All PMI recorders, old…
Measuring PLC AMR Signals with the Revolution
Many AMR (automatic meter reading) systems rely on PLC (power line communication) signals for data transfer. These signals travel on the 60Hz distribution network and can be affected by power…
