Published by Łukasz KOLIMAS, Sebastian ŁAPCZYŃSKI, Michał SZULBORSKI, Warsaw University of Technology, Electrical Power Engineering Institute Abstract. The requirements for high-current circuits, contact systems, switchboards and electrical apparatuses differ from the typical requirements for devices with a low current load, not only because those are more complex, but also because new requirements arise due toContinue reading “Simulations of Electrical Parameters in High Current Busbars”
Tag Archives: Current
Effect of Soil Moisture on Current-Carrying Capacity of Low-Voltage Power Cables
Published by Stanislaw CZAPP1, Filip RATKOWSKI1, 2, Gdańsk University of Technology (1), Research & Development Center, Eltel Networks Energetyka SA (2) Abstract. One of the factors affecting current-carrying capacity of underground power cables is the thermal resistivity of soil. Its value in the close proximity of the cable is the most important, and for thisContinue reading “Effect of Soil Moisture on Current-Carrying Capacity of Low-Voltage Power Cables”
Regulation of Current Harmonics in Grid with Dead-beat Controlled Shunt Active Power Filter
Published by Parandhaman BALAMURUGAN1, Natarajan SENTHIL KUMAR1,Vellore Institute of Technology (1),Chennai, Tamilnadu, India Abstract. Hardware implementation of Shunt Active Power Filter (SAPF) to regulate harmonics in the grid current is presented in this work. Dead-beat controller is employed to regulate the harmonics injected by SAPF using Spartan-6 FPGA processor. The effectiveness of the control strategyContinue reading “Regulation of Current Harmonics in Grid with Dead-beat Controlled Shunt Active Power Filter”
Methods for Determining Power Losses in Cable Lines with Non-Linear Load
Published by Łukasz TOPOLSKI, Jurij WARECKI, Zbigniew HANZELKA, AGH University of Science and Technology Abstract. Harmonic currents in power cables cause additional power losses associated with phenomena that increase the temperature of the cable insulation and make its service life shorter. For these reasons, it is important to choose methods for determining active power losses,Continue reading “Methods for Determining Power Losses in Cable Lines with Non-Linear Load”
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”
Current-Carrying Capacity Parallel Single-Core LV Cable
Published by Lech BOROWIK1, Artur CYWIŃSKI2Politechnika Częstochowska, Wydział Elektryczny (1), Pracownia Projektowa omega-projekt (2) Abstract. The paper presents the problems related to the selection of parallel single-core low voltage cables in terms of their current carrying capacity and accordance with PN-IEC 60364-5-523 national standard, exemplified by electric power transmission from transformer MV/LV 1600kVA, with proximityContinue reading “Current-Carrying Capacity Parallel Single-Core LV Cable”
Thermal Problems in HTS Transformer due to Inrush Current
Published by Grzegorz KOMARZYNIEC1, Tadeusz JANOWSKI2, Grzegorz WOJTASIEWICZ2, Michał MAJKA2, Politechnika Lubelska, Instytut Podstaw Elektrotechniki i Elektrotechnologii (1), Instytut Elektrotechniki w Warszawie (2) Abstract. With switching on a superconducting transformer to the energetic network, a unidirectional current of high amplitude may appear. Maximal values of the current impulses following shortly one after the other mayContinue reading “Thermal Problems in HTS Transformer due to Inrush Current”
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”
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”
Why do 3rd harmonic currents overload neutral conductors?
Published by Mirus International Inc., [2010-01-08] MIRUS-FAQ001-B2, FAQ’s Harmonic Mitigating Transformers, 31 Sun Pac Blvd., Brampton, Ontario, Canada. L6S 5P6. Figure 7-1 shows how the sinusoidal currents on the phases of a 3-phase, 4-wire system with linear loads sum to return on the neutral conductor. The 120° phase shift between the sinusoidal load currents causesContinue reading “Why do 3rd harmonic currents overload neutral conductors?”
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