A 2½ Element WYE Configuration uses 3 current phases and 2 voltage phases to calculate what is on the third voltage phase in order to measure the total power on…
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51 results by Cowles Andrus III — Clear
THD-F vs THD-R
There are two typical definitions used when dealing with Total Harmonic Distortion. The two types of Total Harmonic Distortion are THD-F and THD-R. They both are figures of merit used…
Identifying Loose Neutrals
This white paper describes what a loose neutral is, what effects it can have on electrical equipment, its causes, and some ways to easily detect if a loose neutral is…
Flex CT Overview
This white paper describes what a Flex CT is, how it works, and a brief history on its development. Details are given on how to use the Flex CT to…
Application of the GE Flicker Curve
This an overview of what the GE Flicker Curve is, how, why and when it was developed, and who developed it. Also, this paper covers some of the more useful…
Comparison of Eagle 440 and Revolution PQ Analyzers
PMI manufactures several stand-alone power quality analyzers that are designed to fit in tight enclosures and wirelessly transmit recorded data. This paper outlines the differences between two of those devices,…
Event Capture Function
This white paper is an overview of the Event Capture function available with PMI power quality analyzers. Event capture can be viewed with either ProVision or WinScan software. This paper…
Tools for Cell Signal Verification Before Installation
Good cell phone coverage is not always guaranteed. It varies widely depending upon location, system and cell phone provider. The purpose of this white paper is to provide some suggestions…
Power Consumption vs. Energy Usage Reports
The Power Consumption and Energy Usage reports both measure kilowatt-hours (kWh). In theory, they should provide identical information; however that is not always the case. Usually, these reports differ only…
kWh Variations Between PMI Recorders and Revenue Meters
This white paper discusses some of the reasons that PMI's power quality analyzers may differ with the exact amount of power indicated by a power company's revenue meter. There are…
Event Driven Recorder Function
What follows is a general overview of some of the basic event driven recorder functions available when using ProVision Software and some instructions on getting started with collecting useful data…
The Correct Cell Phone Antenna for a Particular Location
This white paper describes a method of finding and installing the proper cell phone antenna for the Revolution Cell Modem product.
