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…
Power Quality White Papers
Power quality white papers on Power Quality.
209 white papers in Power Quality
Using Scale Factors for PT/CT Ratios & Per-Unit Analysis in ProVision
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…
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…
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…
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…
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…
Oscillatory Transient Ring Frequency
This white paper provides details on how to estimate ring frequency caused by resonances formed between power corrections capacitors and inductive loads using ProVision. Waveform data captured using PMI's Eagle…
Understanding PMI Data Record Types – Part 1
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…
Advanced Waveform Capture with ProVision
Waveform Capture data is often the most detailed information available in a PQ recording. Getting good data is not always easy, so it's important to glean all information possible from…
Power Factor Correction Capacitors and Resonances
This paper explains some of the issues concerning power factor correction, and the side-effect of resonances that can be detrimental to a power distribution system. Also are some solutions to…
New Graph Templates for Flicker Analysis
Voltage flicker is one of the most visible and common residential complaints, yet one of the most challenging to quantify and address. The IEEE 1453 flicker standard defines some important,…
Power Quality with the Significant Change Graph
The Significant Change graph shows single cycle measurements, with one second resolution in a single graphical time series trace. This graph of the triggered Significant Change record type is especially…
