Raw voltage, current, and power signals applied to a PQ recorder are often scaled versions of the true data under question. Transducers such as PTs and CTs step the voltage…
White Papers
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446 white papers
Motor Start-Up from All Angles
ProVision has a multitude of graphs available that are great for analyzing the various aspects of motor startup and the PQ issues that arise while operating these devices. Using an…
Cell Signal Strength Inside Metal Enclosures
In this White Paper I investigate the effect that a metal enclosure has on cell signal strength. A frequent question that we have is how can we get a cell…
Voltage Regulation Analysis With Daily Profiles
If there were no variations in distribution load, system voltage regulation would be a simple task. But Ohm’s law dictates that a change in load produces a change in delivered…
Introduction to Harmonic Bar Charts
The presence of harmonics in the voltage delivered to homes and businesses is pretty much a given due to the increase in non-linear loads in use today. These loads include…
Getting Started with the 3-Phase Boomerang
The 3-phase Boomerang sends continuous voltage, current, and power information to Canvass, PMI's cloud-based data analysis package. The Boomerang and Canvass provide web-based graphing of 3-phase stripchart, daily profile, and…
Understanding PMI Data Record Types – Part 2
The job of any power monitor is to record all interesting data, and leave unrecorded the vast majority of boring, unremarkable data. The tricky part for a monitor is deciding…
Photovoltaic Monitoring with Canvass
The use of distributed generation has witnessed a dramatic increase over the past decade. The two most popular of these – solar and wind – provide a unique set of…
Using the Revolution Cell Antenna Kit
In this White Paper I address the installation and use of the Revolution cell antenna kit (Shown in Figure 1), including some of the questions customers have about antenna selection…
Getting Started with Stripchart Analysis in ProVision
Stripchart data, also known as trend or interval data, is often the most important information in a power quality recording. The bulk of the recorder memory is dedicated to it,…
Using the Properties Panel to Enhance Graphs and Annotations
The properties panel in ProVision is a feature that is often overlooked but can greatly enhance the utility of graphs when preparing them for reports and presentations. By changing the…
Voltage Unbalance with Canvass
Voltages are rarely perfectly balanced in three-phase systems. Although small unbalances are not usually a problem, if this unbalance becomes too great then the unbalance can cause problems especially for…