Clamp-Style Current Transformers (CTs) are a convenient and safe way to measure current flowing through a conductor. PMI offers the TLAR line of iron core CT clamps in both the…
White Papers
Browse our library of power quality technical resources.
432 white papers
Automated Stripchart Analysis With Merlin™
In power quality investigations, triggered waveforms often claim the spotlight, but it is the stripchart that tells the story of the entire recording. Reviewing this data manually is tedious, error-prone,…
Power Quality Challenges of Bidirectional EV Charging
The increasing adoption of Vehicle-to-Grid (V2G) technology enables electric vehicles to operate as mobile inverter-based energy resources, fundamentally altering their interaction with distribution networks. While the power quality impacts of…
Event Capture and Analysis with Merlin™
This white paper provides an overview of the Event Capture function available with PMI power quality analyzers and introduces the Event Change Report, generated by Merlin™, PMI's AI-powered analysis assistant.…
Power Factor Correction and Voltage Regulation
Maintaining acceptable voltage levels along distribution feeders requires careful coordination of voltage regulation equipment and proactive management of reactive power and harmonics. Loads with significant inductive characteristics increase reactive power…
Ferroresonance in Solar Step-Up Transformers
This paper explores the unique risks of ferroresonance within solar photovoltaic (PV) installations, specifically focusing on the interaction between step-up transformers and system capacitance. We will examine why solar sites…
Power Analysis with Distorted Waveforms
Many power quality engineers are familiar with the concepts related to the power triangle such as real power, reactive power, apparent power and power factor. The construction of the power…
Defining and Measuring Rapid Voltage Change
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…
High Order Harmonics
Harmonic Distortion has long been recognized as a primary concern in power quality, traditionally monitored only through the 51st harmonic. This boundary was sufficient for decades, when most nonlinear loads…
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…
Power Quality Focus Areas with Merlin™
Introduction Power quality investigations are often intricate, time consuming, and prone to oversight. Faced with a long duration recording, engineers must sort through an enormous volume of events, trends, and…
Datacenter Power Consumption III
Previous white papers covered the basics of datacenter power consumption and the frantic pace of growth and general challenges facing utilities responsible for supplying these mass consumers. Northern Virginia is…
