Written by Ian Wallace, Chief Engineer, Power Quality Solutions, TCI® Technical Paper. Introduction IEEE Std 519-2014 is a newly published revision to the IEEE Recommended Practice and Requirements for Harmonic Control in Electric Power Systems. It supersedes the IEEE Std 519-1992 revision. The overarching goal of the 2014 revision is the same as the 1992Continue reading “Key Changes and Differences between the New IEEE 519- 2014 Standard and IEEE 519-1992”
Tag Archives: Power Standards
Knowing IEC 61000-4-30 Class A
Published by Elspec Power quality refers to a set of electrical boundaries defined by various documented rules designed to allow electrical equipment to function in its intended manner without significant loss of performance or life expectancy, this includes the steady and stable supply of electricity delivered by the grid. In order to achieve this aimContinue reading “Knowing IEC 61000-4-30 Class A”
What is Ground Fault Testing, Why is it Important?
Published by Carelabs (Carelabz) A ground fault is any short circuit that outcomes in an unintentional connection amid a ground and energized ungrounded phase conductor and ground. Ground faults are the most common type of fault on power distribution systems. They are due to the insulation failure or accidental grounding of an ungrounded phase conductorContinue reading “What is Ground Fault Testing, Why is it Important?”
Revised IEC and IEEE Standards for PQ Measurements for Users of PQ Monitoring Equipment
New and revised Standards for Power Quality measurements from IEC and IEEE and their benefit to users of PQ monitoring equipment that is compliant with these new standards general information refer to the actual standard for additional details. IEC 61000-4-30 Class A Edition 3 The IEC 61000-4-30 Class A standard defines the measurement methods, timeContinue reading “Revised IEC and IEEE Standards for PQ Measurements for Users of PQ Monitoring Equipment”
Standard EN 50160 – Voltage Characteristics of Public Distribution Systems
Published by Henryk Markiewicz, Email: henryk.markiewicz@pwr.wroc.pl, & Antoni Klajn, Email: antoni.klajn@pwr.wroc.pl, Wroclaw University of Technology, July 2004. Website: http://www.pwr.wroc.pl Source: Leonardo Power Quality Initiative (LPQI) Power Quality Application Guide Voltage Disturbances 5.4.2 Standard EN 50160 Introduction Electrical energy is a product and, like any other product, should satisfy the proper quality requirements. If electrical equipmentContinue reading “Standard EN 50160 – Voltage Characteristics of Public Distribution Systems”
Power Quality Measurements in All Voltage Levels of the Utilities up to 150 kHz – Is it Possible?
Published by Roland Buerger (MBS AG), Business Development/R & D, MBS AG, Sulzbach-Laufen (Germany), Email: rbuerger@mbs-ag.com Bernhard Grasel (NEO MESSTECHNIK), Sales Manager, NEO Messtechnik, Zoebern (Austria), Email: bernhard.grasel@neo-messtechnik.com A reliable energy supply has meanwhile become an important location factor for many companies. While power failures and voltage fluctuations were among the most important parameters ofContinue reading “Power Quality Measurements in All Voltage Levels of the Utilities up to 150 kHz – Is it Possible?”
Power Quality Standards for Utility Wind and Solar Power Plants
Published by David Mueller, E. H. Camm. Abstract Power quality standards exist to guide the interconnection requirements of large wind and solar plants. IEEE guidelines exist for flicker and harmonics, while IEC guidelines exist for the measurement criteria of power quality phenomena and the characterization of wind turbine equipment. There are also some uniform guidelinesContinue reading “Power Quality Standards for Utility Wind and Solar Power Plants”
Earthing System
How To Choose The Right System Earthing Arrangement? Application Note, 2009 Published by Schneider Electric Source: https://www.se.com/ww/en/download/document/DBTP72ART_EN/ All System Earthing Arrangements (SEA) provide equivalent protection of life and property. However each has certain advantages and inconveniences in other terms that may be important for a given installation. In both commercial and industrial applications, needs change,Continue reading “Earthing System”
Part 7: AC Power Distribution Systems & Standards (Overcurrent, Fuse & Circuit Breaker)
Published by Nikola Zlatanov* Complete Overcurrent Device Interest in complete overcurrent device selectivity has increased due to the addition of selectivity requirements to articles 700, 701, and 708 of the National Electrical Code (NFPA70). Many users, both commercial and industrial, use fuses and circuit breakers simultaneously. Traditional Time- Current Curve (TCC) analysis is known toContinue reading “Part 7: AC Power Distribution Systems & Standards (Overcurrent, Fuse & Circuit Breaker)”
Part 4: AC Power Distribution Systems & Standards
Published by Nikola Zlatanov* Ground Fault Protection Article 230.95 of NEC requires ground- fault protection of equipment shall be provided for solidly grounded wye electrical services of more than 150 V to ground, but not exceeding 600 V phase-to-phase for each service disconnect rated 1000 A or more. The rating of the service disconnect shallContinue reading “Part 4: AC Power Distribution Systems & Standards”
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