Harmonic Analysis is a fundamental part of any power quality investigation. A good amount of information can be gained about a power signal by looking in the frequency domain at…
White Papers
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450 white papers
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…
60Hz Phasors and Extended PQ Measurements
This white paper walks the reader through a method to take basic core PQ measurements and derive several other measurements (such as 60Hz power, Voltage and Current THD, distortion power…
Datacenter Power Consumption
The proliferation of digital technologies has driven rapid growth of data centers across the United States. These facilities, housing the servers that power the internet, cloud computing, and big data…
Symmetrical Components from Stripchart Data
Symmetrical components can be useful in a PQ investigation, especially in cases of voltage imbalance, where the customer's negative sequence current can help determine their contribution to the imbalance. Many…
Getting PQ Data from your SCADA System
DNP3 (Distributed Network Protocol) is a communication protocol used primarily in utilities and industrial settings for automation and control systems. It is designed to enable reliable, secure communication between control…
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…
Symmetrical Components
Power systems ideally operate in a balanced state, with equal voltages and currents across all phases. However, real-world scenarios often involve unbalanced conditions that can degrade power quality. Symmetrical components…
An Analysis of Loose Neutral Conditions
A loose neutral condition occurs when the neutral conductor between the line transformer secondary and the meter base breaks connection or corrodes to a point of very high impedance. Unlike…
Assessing Impact Loads in PQ Canvass
Impact loads are frequent and very high current surges which are usually greater than the rating of the transformer on which they occur. They present as repeated near-short circuit conditions,…
Voltage Regulation in PQ Canvass
PQ Canvass is a web-based power quality analysis software developed by Power Monitors Inc. It combines the foundational elements of Canvass with the features of ProVision, providing a set of…
Loose Neutrals and Grounding
A loose neutral is a common but dangerous single-phase problem. The situation often presents as a power quality problem but in reality it's a safety issue that demands immediate attention.…