Published by Terry Chandler, Director of Engineering, Power Quality Thailand Ltd. & Power Quality Inc., USA. Application Note, Sept. 2013Emails: terryc@powerquality.org, terryc@powerquality.co.th Typical PTs and CTs cause errors and issues in PQ measurements in three areas: 1. Harmonics As the PT and CT have very poor frequency response, they are in affect are a low pass filter onContinue reading “How High Voltage PTs (VTs) and CTs Limit the Input to PQ Voltage Transient Measuring Instruments and Limit the High Order Harmonic Accuracies of Voltage and Current”
Category Archives: App Notes / White Papers
Wire Wrapping for Low Current Monitoring
Published by Veris Industries, Veris Application Note VN35 – Wire Wrapping for Low Current Monitoring. The information provided herein is intended to supplement the knowledge required of an electrician trained in high voltage installations. There is no intent to foresee all possible variables in individual situations, nor to provide all training needed to perform theseContinue reading “Wire Wrapping for Low Current Monitoring”
General Reference – Utility Capacitor Switching – Common Waveforms
Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference – Utility Capacitor Switching – Common Waveforms, Document ID: PQS0707, Date: January 1, 2007. Abstract: The application of utility capacitor banks has long been accepted as a necessary step in the efficient design of utility power systems. Also, capacitor switching is generally considered a normal operationContinue reading “General Reference – Utility Capacitor Switching – Common Waveforms”
Prospective Short Circuit Test and Prospective Fault Current Test (PSC & PFC TEST)
Published by Carelabs, Carelabs (Carelabz) is authorized provider of Electrical Installation’s Study, Analysis, Inspection, and Certification services in UAE. Website: carelabz.com Prospective Short Circuit (PSC) and Prospective Fault Current (PFC) are both intended to calculate the highest current that will stream within a fault loop path during the occurrence of an electrical flaw as needed by rules. The Prospective Short Circuit Current (PSC) is the utmost current that could flow between Line and Neutral conductors onContinue reading “Prospective Short Circuit Test and Prospective Fault Current Test (PSC & PFC TEST)”
General Reference – Utility Capacitor Switching
Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference – Utility Capacitor Switching, Document ID: PQS0302, Date: January 10, 2003. Abstract: The application of utility capacitor banks has long been accepted as a necessary step in the efficient design of utility power systems. Also, capacitor switching is generally considered a normal operation for a utilityContinue reading “General Reference – Utility Capacitor Switching”
General Reference – Modeling for Transient Analysis
Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference – Modeling for Transient Analysis, Document ID: PQS0316, Date: July 18, 2003. Abstract: Transient voltage and currents are a result of sudden changes within the electric power system. Opening or closing of a switch or circuit breaker causes a change in circuit configuration and the associatedContinue reading “General Reference – Modeling for Transient Analysis”
Program on Technology Innovation: A History of Power Quality
Addressing Evolving Customer Technologies and an Increasingly Complex Power Grid Published by Electric Power Research Institute (EPRI), Inc. Document ID: 3002022396, March 2022. Introduction Over the past 50 years, the concept of power quality (PQ) has evolved from being an unknown and undefined concept to being understood as a fundamental component of grid performance, utilityContinue reading “Program on Technology Innovation: A History of Power Quality”
ITI (CBEMA) Curve Application Note
Published by Information Technology Industry Council (ITI), 1250 Eye Street NW Suite 200, Washington DC 20005, 202-737-8888, http://www.itic.org 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”
Paralleling Dissimilar Generators: Part 2 – Compatible Alternators
Published by By Gary Olson, Director of Technical Support, Cummins Power Generation, Power topic #9016 | Technical information from Cummins Power Generation – White Paper Paralleled alternators are compatible if they can operate in parallel without having damaging or disruptive neutral currents flowing between them. The magnitude of neutral current flow related to the dissimilarityContinue reading “Paralleling Dissimilar Generators: Part 2 – Compatible Alternators”
Technical Paper: Semiconductor Equipment Voltage Sag Immunity Improvements
This Technical Paper Written by: Mark Stephens, P.E. Engineering Manager, EPRI PEAC Corporation, Semiconductor & Industrial PQ Group, EPRI PEAC Corporation, 942 Corridor Park Boulevard Knoxville, Tennessee 37932, Phone: (865)-218-8022, Fax: (865)-218-8001 mstephens@epri-peac.com, http://www.f47testing.com, June 13th, 2002 Introduction The end of the report read…“…Imagine a time in the not so distant future when the industryContinue reading “Technical Paper: Semiconductor Equipment Voltage Sag Immunity Improvements”
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