Published by Jim Galloway, International Association of Electrical Inspectors (IAEI) Magazine, Electrical Fundamentals – The Dangers of Stray Current Damage in Electrical Systems & Arc Flash Protection, July 3, 2019 The new extension to the factory is finally finished. The engineers have produced a state-of-the-art design; the qualified electricians have completed a professional installation withContinue reading “The Dangers of Stray Current Damage in Electrical Systems & Arc Flash Protection”
Category Archives: Power Quality
Principle of lightning Protection
Published by Electrical Installation Wiki, Chapter J. Overvoltage protection – Principle of lightning protection General rules of lightning protection Procedure to prevent risks of lightning strike The system for protecting a building against the effects of lightning must include: • protection of structures against direct lightning strokes;• protection of electrical installations against direct and indirect lightningContinue reading “Principle of lightning Protection”
How to Select the Right Current Transformer for Your Application
Published by Accuenergy, November 4, 2021. Help me choose the Right CT If you have a power measurement project coming up, chances are you have narrowed down your search for a power meter to a few choices. Whether it’s a multi-circuit application or a high-precision metering in an industrial setting, the next step in project preparationContinue reading “How to Select the Right Current Transformer for Your Application”
Electrical Shock and its Effects
Published by Alex Roderick, EE Power – Technical Articles: Electrical Shock and its Effects, August 17, 2021. Anyone working on electrical equipment should have respect for all voltages, have knowledge of the principles of electricity, and follow safe work procedures. An electrical shock occurs when a body becomes a part of an electrical circuit. The effectsContinue reading “Electrical Shock and its Effects”
Overvoltage of Atmospheric Origin
Published by Electrical Installation Wiki, Chapter J. Overvoltage protection – Overvoltage of atmospheric origin Overvoltage definitions Overvoltage (in a system) any voltage between one phase conductor and earth or between phase conductors having a peak value exceeding the corresponding peak of the highest voltage for equipment. Definition from the International Electrotechnical Vocabulary (IEV 604-03-09); available on [1] VariousContinue reading “Overvoltage of Atmospheric Origin”
Solutions to Mitigate Harmonics
Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Solutions to mitigate harmonics There are three different types of solutions to attenuate harmonics: • Modifications in the installation• Special devices in the supply system• Filtering Basic solutions to mitigate harmonics To limit the propagation of harmonics in the distribution network, different solutions are availableContinue reading “Solutions to Mitigate Harmonics”
Harmonics Standards
Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Harmonics standards Harmonic emissions are subject to various standards and regulations: • Compatibility standards for distribution networks• Emissions standards applying to the equipment causing harmonics• Recommendations issued by Utilities and applicable to installations In view of rapidly attenuating the effects of harmonics, a tripleContinue reading “Harmonics Standards”
Main Effects of Harmonics in Electrical Installations
Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Main effects of harmonics in electrical installations Effects of harmonics – Resonance The simultaneous use of capacitive and inductive devices in distribution networks may result in parallel or series resonance. The origin of the resonance is the very high or very low impedance values atContinue reading “Main Effects of Harmonics in Electrical Installations”
Monitoring of Low Voltage Grids with the use of SAIDI Indexes
Published by Zbigniew ŁUKASIK1, Jacek KOZYRA1, Aldona KUŚMIŃSKA-FIJAŁKOWSKA1Uniwersytet Technologiczno-Humanistyczny w Radomiu, Wydział Transportu i Elektrotechniki (1) Abstract. A new method of established and justified level of operational costs for distribution network operators in a new model of regulation in force in the years 2016 – 2020 is described in this article. The changes made inContinue reading “Monitoring of Low Voltage Grids with the use of SAIDI Indexes”
Harmonic Measurement in Electrical Networks
Published by Electrical Installation Wiki, Chapter M. Power harmonics management – Harmonic measurement in electrical networks Procedures for harmonic measurement Harmonic measurements are carried out on industrial or commercial sites: • Preventively, to obtain an overall idea on distribution-network status (network mapping),• In view of corrective action, to determine the origin of a disturbance and determineContinue reading “Harmonic Measurement in Electrical Networks”
Power Quality Blog 