Results 191 to 200 of about 36,573 (293)

Electrical Diagnosis Techniques for Power Transformers: A Comprehensive Review of Methods, Instrumentation, and Research Challenges. [PDF]

Sensors (Basel)
Mwinisin P, Mingotti A, Peretto L, Tinarelli R, Tefferi M.   +4 more
europepmc   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Assessment of UHF Frequency Range for Failure Classification in Power Transformers. [PDF]

Sensors (Basel)
Schiewaldt K, de Castro BA, Ardila-Rey JA, Franchin MN, Andreoli AL, Tenbohlen S.   +5 more
europepmc   +1 more source

Partial Discharge Localization Using Time Reversal: Application to Power Transformers. [PDF]

Sensors (Basel), 2020
Karami H, Azadifar M, Mostajabi A, Rubinstein M, Karami H, Gharehpetian GB, Rachidi F.   +6 more
europepmc   +1 more source

Low power current transformers

, 2018
Master‘s thesis is focused on current instrument transformers, current sensors and low power current transformers. Discussion is made on advantages and disadvantages of each measuring principle.
Zolich, Ladislav
core  

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel, Lara Kuhr, Khemais Barienti, Sebastian Herbst, Florian Nürnberger, Hans Jürgen Maier, Marc C. Wurz   +6 more
wiley   +1 more source

Digital protection scheme based on Durbin Watson and Pearson similarity indices for current signals practically applied to power transformers. [PDF]

Sci Rep
Mahmoud RA.
europepmc   +1 more source

Nonthermal Plasma Reduction of Nickel Oxide Layers by Atmospheric Pressure Dielectric Barrier Discharge in Argon/Hydrogen

Advanced Engineering Materials, EarlyView.
This work explores the reduction of nickel oxide layers using dielectric barrier discharge plasma in an argon–hydrogen atmosphere. The results reveal a strong temperature dependence, enabling complete reduction of thick oxide layers at 200°C within seconds.
Maria Argirusi, Viktor Udachin, Sascha Jan Zimmermann, Alexander Tillmanns, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +5 more
wiley   +1 more source

New approach for accurate discrimination and location of power transformers with different internal winding faults. [PDF]

PLoS One
Youssef M, Abdelaziz ES, Saad H, Attia M.   +3 more
europepmc   +1 more source

Study of the Influence of Winding and Sensor Design on Ultra-High Frequency Partial Discharge Signals in Power Transformers. [PDF]

Sensors (Basel), 2020
Beura CP, Beltle M, Tenbohlen S.
europepmc   +1 more source