Published by Pacific Gas and Electric Company (PG&E), January 1999. The only national standard for utilization voltage regulation is ANSI C84.1. Its title is American National Standard for Electric Power Systems and Equipment – Voltage Ratings (60 Hertz). The first version in 1954 was a combination of two standards, one from the Edison Electric InstituteContinue reading “Voltage Tolerance Boundary”
Tag Archives: Power Standards
The Effects of Changes to IEEE 519-1992 to 2014
Published by EATON, Powering Business Worldwide, Application Note AP040094EN, Effective November 2014 Introduction Recent changes have been made to IEEE 519. These revisions add clarity to the 1992 document as well as present new definitions, methods and recommendations. This brief summary of changes to IEEE 519 as it pertains to low voltage adjustable frequency drivesContinue reading “The Effects of Changes to IEEE 519-1992 to 2014”
Examples of Capabilities of Class A PQ Instruments vs Dranetz Instruments with Beyond Class A Capability
Published by Terry Chandler, Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. E-mail: terryc@powerquality.org, terryc@powerquality.co.th Please feel free to leave a question in the comments section or contact Terry Chandler, terryc@powerquality.org, terryc@powerquality.co.th
Characterizing Voltage Sag Waveforms using IEEE P1159.2 Algorithms
Published by Dan Sabin, Monitoring System Applications Architect, Electrotek.
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”
IEC 61000-4-30 Class A Edition 3
The IEC 61000-4-30 Class A standard defines the measurement methods, time aggregation, accuracy, and evaluation, for each power quality parameter to obtain reliable, repeatable and comparable results between various brands and models of PQ instruments and systems. IEC 61000-3-30 Class A Edition 2IEC 6100-4-30 Class A Edition 2 standardizes the measurements of: Power frequency SupplyContinue reading “IEC 61000-4-30 Class A Edition 3”
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