Published by Electrical Installation Wiki, Chapter J. Overvoltage protection – Installation of Surge Protection Device Connection of Surge Protection Device Connections of a SPD to the loads should be as short as possible in order to reduce the value of the voltage protection level (installed Up) on the terminals of the protected equipment. The total lengthContinue reading “Installation of Surge Protection Device”
Category Archives: Power Quality
Electrical Power Quality and Harmonic Concerns
Published by Chuck Gougler, International Association of Electrical Inspectors (IAEI) Magazine, Electrical Fundamentals – Electrical Power Quality and Harmonic Concerns, December 29, 2015 The Problem of Harmonics Harmonics are generated by nonlinear components in electrical systems, which distort the sine wave. Increasing usage of power electronics causes a corresponding increase in voltage distortion, or harmonics.Continue reading “Electrical Power Quality and Harmonic Concerns”
Circuit Overcurrent Protection
Published by Clive Kimblin, International Association of Electrical Inspectors (IAEI) Magazine, Electrical Safety – Circuit Overcurrent Protection, March 16, 2002 Overcurrent devices protect the circuit conductors and conductor insulation from overheating. They also limit the damage associated with overheating and faults in downstream equipment. Fuses performed this function during the first days of electrical distribution,Continue reading “Circuit Overcurrent Protection”
Design of the Electrical Installation Protection System
Published by Electrical Installation Wiki, Chapter J. Overvoltage protection – Design of the electrical installation protection system To protect an electrical installation in a building, simple rules apply for the choice of • SPD(s);• its protection system. For a power distribution system, the main characteristics used to define the lightning protection system and select a SPDContinue reading “Design of the Electrical Installation Protection System”
The Dangers of Stray Current Damage in Electrical Systems & Arc Flash Protection
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”
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”
