Rapid Voltage Change (RVC) represents a specific category of power quality phenomena characterized by a fast transition in the RMS voltage between two steady-state conditions. Unlike a voltage dip or…
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Case Study: Tensor in a Backyard Greenhouse
Introduction Effective greenhouse management requires consistent monitoring of environmental extremes and equipment performance. This white paper examines the role of the PMI Tensor in verifying the adequacy of ventilation and…
Voltage Unbalance and Polyphase Induction Motors
While three-phase AC squirrel-cage motors have been around and reliable since 1889, courtesy of Mikhail Dolivo-Dobrovolsky, one issue that has plagued their operation and lifespan throughout the years has been…
Voltage Tug-of-War The Silent VFD Killer
The modern variable-speed drive (VFD) is a sophisticated power electronic system, yet the front end is still a deceptively simple six-pulse diode bridge. That simplicity means the rectifier has little…
Datacenter Power Consumption II
The explosive growth of datacenter infrastructure in the United States continues to reshape electricity consumption patterns, now constituting a substantial and rapidly growing share of both total load and peak…
Why Notching Disrupts Power Quality and How To Stop It
Wave notching is a type of voltage distortion that appears as a very fast, repetitive dip or "notch" in the sinusoidal waveform of an AC power system. This periodic disturbance…
Delta (Line to Line) Voltage
In the world of electrical engineering and power distribution, understanding the relationship between different voltage types is essential. One of the key distinctions in three-phase power systems is the difference…
PMI View Feature Updates and Enhancements
Introduction PMI View for iOS continues to evolve with new features and improvements since our last white paper. This document highlights the significant additions that enhance your ability to perform…
Windows PMI View Introduction
Introduction Power Monitors’ Windows PMI View is a desktop app for Windows 10/11 that lets you manage your Power Monitors’ recording devices. The application seamlessly connects to PMI recorders, providing…
Auto-Correction of CT Hookup
Sometimes when hooking up CTs for a device, a user will inadvertently place the CTs in the wrong configuration. Maybe the channel 2 CT was placed on the third phase…
Introduction to PMI View
Power Monitors' PMI View is a cutting-edge iOS and iPadOS application for performing power quality analysis in the field, bringing the full capabilities of PMI's advanced recording devices to your…
Best Practices for Photovoltaic Monitoring Setup
The increasing development and use of solar power generation using Photovoltaic (PV) systems introduces new power quality perspectives and challenges. Understanding common analytic avenues with regard to PV systems can…
