ITI (CBEMA) Curve Application Note

Published by Information Technology Industry Council (ITI), 1250 Eye Street NW Suite 200, Washington DC 20005, 202-737-8888, The ITI (CBEMA) Curve, included within this Application Note, is published by Technical Committee 3 (TC3) of the Information Technology Industry Council (ITI, formerly known as the Computer & Business Equipment Manufacturers Association). It is available atContinue reading “ITI (CBEMA) Curve Application Note”

WideRangeFlexCT™ Accuracy

Application Note 06-01-2015 Published by Radian Research, Inc.  Trademarked flex CT interface WideRangeFlexCT™ measures currents from 1A to 2500A without requiring the user to set specific ranges. Internally there are 3 measurement ranges that are automatically switched between. The measurement error depends on which range is active, these ranges are 1.00A – 18.00A, 18.0A –Continue reading “WideRangeFlexCT™ Accuracy”

Application Note Earthing Systems: Fundamentals of Calculation & Design

Application Note Published by H. Markiewicz and A. Klajn, November 2014 ECI Publication No. Cu0120 Document Issue Control Sheet Document Title: Application Note – Earthing Systems: Fundamentals of Calculation and Design Publication No: Cu0120 Issue: 03 Release: June 2003 Author(s): H. Markiewicz and A. Klajn Reviewer(s): D. Chapman, S. Fassbiner Document History Issue Date PurposeContinue reading “Application Note Earthing Systems: Fundamentals of Calculation & Design”

Encore Series UPS Monitoring

Application Note WHERE EVERY MILLISECOND COUNTS! The digital economy has redefined business operations and is setting new standards for electric power reliability and quality. Downtime – undesirable for any business – is catastrophic for Data Centers and other high reliability facilities where even the smallest power quality issue can cause equipment failure, data corruption, andContinue reading “Encore Series UPS Monitoring”

Determining Sag Directivity

Application Note INTRODUCTION Voltage sags, or dips are the most common type of power quality (PQ) event. Knowing the directivity of the sag, or where it originated, is very import when trying to locate its source and to ultimately mitigate the problem. This application note outlines some rules of thumb to help determine the directivityContinue reading “Determining Sag Directivity”

Frequency Measurements & Data Recorded of PQ Instruments that meet the IEC 61000-4-30 Class A

Published by Terry Chandler, Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. E-mail:, An example is the Dranetz HDPQ family, the PX-5 family and the 61K family. The IEC standard for frequency measurement calculation and accuracy is This specifies the time of the reference channel is measured for 10 seconds. That value isContinue reading “Frequency Measurements & Data Recorded of PQ Instruments that meet the IEC 61000-4-30 Class A”

Dran-View 7

White Paper Dranetz industry leading power analysis software provides professional reports and analysis to all users INTRODUCTION Dran-View® is a Windows-based software package that enables power professionals to simply and quickly visualize and analyze power monitoring data. It is easy to navigate, delivers automated functionality, and incorporates powerful analytical capabilities and customizable options to meetContinue reading “Dran-View 7”

Harmonics Data Analysis with Dran-View 7 (DV7) Enterprise Software

To do advanced harmonic analysis using the postprocessing capability of Dran-View 7 (DV7) Enterprise. Note: Use the waveform capture on periodic basis to collect the most useful data but not necessary for normal PQ activity and reports. The steps below give a few examples. Step 1. Open the data file of the site of interestContinue reading “Harmonics Data Analysis with Dran-View 7 (DV7) Enterprise Software”

IEC Characterize Events Overview

Application note for the Dranetz automatic characterizer in HDPQ portable instruments. Overview The RMS variation characterizer analyzes cyclic records saved in the database and determines which of those records constitute an event based on a selected criterion. The result is a database record that contains the description of the event, detail of the event, andContinue reading “IEC Characterize Events Overview”

Harmonics Analysis using PX5-400 & DV6 Enterprise Software

The Power Xplorer integrates the most advanced feature set available in a power monitoring instrument, with an easy-to-navigate, color graphical user interface. With high-speed sampling and data capture (1 microsecond/channel), this 8-channel workhorse simultaneously captures and characterizes thousands of parameters, using a range of standard and customizable operating modes. The unique measurement capabilities of theContinue reading “Harmonics Analysis using PX5-400 & DV6 Enterprise Software”