Power Quality Work at the International Electrotechnical Commission

Published by Franyois Martzloff, National Institute of Standards and Technology*, Gaithersburg MD 20899 USA *Electricity Division, Electronics and Electrical Engineering Laboratory, Technology Administration, US. Department of Commerce. Abstract The paper presents an update, including a brief historical background, on the work to be undertaken at the International Electrotechnical Commission (IEC) to address power quality issues.Continue reading “Power Quality Work at the International Electrotechnical Commission”

Why Specifying IEC 61000-4-30 Class A Is Not Enough

Published By Terry Chandler Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. Emails: terryc@powerquality.org, terryc@powerquality.co.th 1. A new revision of the IEC standard for PQ monitors 61000-4-30 Class Edition 3 2015 has been released. Why? It includes new parameters and new requirements for accuracy over the entire operating temperature range. 2. The PQ Instrument must haveContinue reading “Why Specifying IEC 61000-4-30 Class A Is Not Enough”

Power Quality Standards

Published by Mark McGranaghan, Electrotek Concepts, Inc. Electrical Contractor Magazine, Power Quality for the Electrical Contractor Course Introduction Power quality has always been important. However, for many years the equation defining power quality was very simple: POWER QUALITY = RELIABILITY Customer loads were linear in nature. When a sinusoidal voltage was supplied to them, theyContinue reading “Power Quality Standards”

Application of IEEE STD 519-1992 Harmonic Limits

Published by Thomas M. Blooming, P.E., Email: t.blooming@ieee.org, Eaton Electrical Asheville, North Carolina Daniel J. Carnovale, P.E., Email: DanielJCarnovale@eaton.com, Eaton Electrical Pittsburgh, Pennsylvania Presented at the 2005 IEEE IAS Pulp and Paper Industry Conference in Appleton, WI. Abstract IEEE Std 519-1992 is a useful document for understanding harmonics and applying harmonic limits in power systems.Continue reading “Application of IEEE STD 519-1992 Harmonic Limits”

The Need for Harmonic Modeling and Mitigation in Generator Applications: A Conversation and Guide

White Paper 08-03-2021 Published by Michael McGraw, USA National Sales Manager, Mirus International Inc., Introduction & Structure It is widely accepted that performing harmonic studies for non-linear applications is important to ensure a workable and energy efficient installation. It is also accepted that these harmonic studies be performed under normal source conditions and maximum operatingContinue reading “The Need for Harmonic Modeling and Mitigation in Generator Applications: A Conversation and Guide”

Overview of IEEE STD 1564-2014 Guide for Voltage Sag Indices

Published by Daniel Sabin, Electrotek Concepts , USA and Math Bollen, Luleå University of Technology, Sweden Emails: d.sabin@ieee.org & m.bollen@ieee.org Published in 23rd International Conference on Electricity Distribution, Lyon, 15th-18th June, 2015 ABSTRACT IEEE Std 1564-2014 Guide for Voltage Sag Indices is a new standard that identifies appropriate voltage sag indices and characteristics of electricalContinue reading “Overview of IEEE STD 1564-2014 Guide for Voltage Sag Indices”