--- title: Power Quality Library | Power Monitors, Inc | Caleb Payne description: For 25 years, we’ve been developing specialized power quality monitoring systems that are all-weather, rugged, compact, and easy to use. image: https://library.powermonitors.com/hubfs/Blog_Posts/WP192/White_Paper_Icon_Circle_Gradient_Web.png --- [![PMI Logo Tools you need people you Trust](https://library.powermonitors.com/hubfs/PMI_Website/logo.svg)](https://powermonitors.com/) - [Home](https://powermonitors.com) - [Products](https://powermonitors.com/products) - Library - Videos - [All](https://powermonitors.com/videos/) - [Bolt Quality Tests](https://powermonitors.com/videos/?video_search=&video_topic=bolt-quality-tests) - [Promotional Videos](https://powermonitors.com/videos/?video_search=&video_topic=promotional-videos) - [Support Videos](https://powermonitors.com/videos/?video_search=&video_topic=support) - [Power Quality Decoded](https://powermonitors.com/videos/?video_search=&video_topic=white-paper-walkthroughs) - 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Find me on: ## Recent Posts ## [Ferroresonance in Solar Step-Up Transformers](https://library.powermonitors.com/ferroresonance-in-solar-step-up-transformers) Jan 28, 2026, 2:47:19 PM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [Power Quality](https://library.powermonitors.com/topic/power-quality) [Read More »](https://library.powermonitors.com/ferroresonance-in-solar-step-up-transformers) ## [Defining and Measuring Rapid Voltage Change](https://library.powermonitors.com/defining-and-measuring-rapid-voltage-change) Jan 13, 2026, 10:42:02 PM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [Power Quality](https://library.powermonitors.com/topic/power-quality), [Voltage](https://library.powermonitors.com/topic/voltage), [Merlin AI](https://library.powermonitors.com/topic/merlin-ai) [Read More »](https://library.powermonitors.com/defining-and-measuring-rapid-voltage-change) ## [Detailed Waveform Analysis with Merlin](https://library.powermonitors.com/detailed-waveform-analysis-with-merlin) Dec 9, 2025, 10:39:03 PM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [Power Quality](https://library.powermonitors.com/topic/power-quality), [PQ Canvass](https://library.powermonitors.com/topic/pq-canvass), [AI](https://library.powermonitors.com/topic/ai), [Data Analysis](https://library.powermonitors.com/topic/data-analysis) [Read More »](https://library.powermonitors.com/detailed-waveform-analysis-with-merlin) ## [High Impedance Faults: Causes, Risks, Detection Techniques](https://library.powermonitors.com/high-impedance-faults-causes-risks-detection-techniques) Sep 23, 2025, 8:10:44 AM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [Power Quality](https://library.powermonitors.com/topic/power-quality), [Voltage](https://library.powermonitors.com/topic/voltage) [Read More »](https://library.powermonitors.com/high-impedance-faults-causes-risks-detection-techniques) ## [Why Notching Disrupts Power Quality and How To Stop It](https://library.powermonitors.com/why-notching-disrupts-power-quality-and-how-to-stop-it) Aug 29, 2025, 11:13:57 AM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [PMI Products](https://library.powermonitors.com/topic/pmi-products), [Power Quality](https://library.powermonitors.com/topic/power-quality), [Harmonics/Interharmonics](https://library.powermonitors.com/topic/harmonics-interharmonics), [Using PMI Recorders](https://library.powermonitors.com/topic/using-pmi-recorders), [Notching](https://library.powermonitors.com/topic/notching) [Read More »](https://library.powermonitors.com/why-notching-disrupts-power-quality-and-how-to-stop-it) ## [PQ Trends Electric Vehicle Charging](https://library.powermonitors.com/pq-trends-electric-vehicle-charging) Jun 24, 2025, 2:41:28 PM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [Power Quality](https://library.powermonitors.com/topic/power-quality), [Electric Vehicles](https://library.powermonitors.com/topic/electric-vehicles) [Read More »](https://library.powermonitors.com/pq-trends-electric-vehicle-charging) ## [Voltage Imbalance and Its Impact on Waveform Distortion](https://library.powermonitors.com/voltage-imbalance-and-its-impact-on-waveform-distortion) Mar 11, 2025, 3:56:21 PM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [Power Quality](https://library.powermonitors.com/topic/power-quality), [Voltage Unbalance](https://library.powermonitors.com/topic/voltage-unbalance) [Read More »](https://library.powermonitors.com/voltage-imbalance-and-its-impact-on-waveform-distortion) ## [60Hz Phasors and Extended PQ Measurements](https://library.powermonitors.com/60hz-phasors-and-extended-pq-measurements) Oct 29, 2024, 3:07:57 PM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [Power Quality](https://library.powermonitors.com/topic/power-quality) [Read More »](https://library.powermonitors.com/60hz-phasors-and-extended-pq-measurements) ## [Symmetrical Components from Stripchart Data](https://library.powermonitors.com/symmetrical-components-from-stripchart-data) Aug 13, 2024, 7:31:19 PM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [Power Quality](https://library.powermonitors.com/topic/power-quality) [Read More »](https://library.powermonitors.com/symmetrical-components-from-stripchart-data) ## [Symmetrical Components](https://library.powermonitors.com/symmetrical-components) Jul 16, 2024, 7:50:14 PM [Caleb Payne](https://library.powermonitors.com/author/caleb-payne) [PQ Canvass](https://library.powermonitors.com/topic/pq-canvass) [Read More »](https://library.powermonitors.com/symmetrical-components) [All posts](https://library.powermonitors.com/all) [Next](https://library.powermonitors.com/author/caleb-payne/page/2) Power Monitors, Inc. is an industry-leading product design and manufacturing firm based in Mt. Crawford, Virginia. PMI® strives to solve power quality problems by listening to our customers and working with them to design and manufacture products. Total customer satisfaction is the primary goal of all PMI® staff. Please browse our site or call us to learn more about PMI® and how we can help meet your power monitoring needs. 800 N Main St Mt Crawford, VA 22841 | Toll Free 800.296.4120 | Fax 540.432.9430 | © Power Monitors, Inc.