Results 221 to 230 of about 1,861 (307)

Evaluation Methodology, Numerical Verification and Retrofilling Procedure for Power Transformers to Ensure K‐Class Flame Retardancy and Environmentally Friendly

High Voltage, EarlyView.
ABSTRACT With increasing demands for fire safety and environmental friendliness, retrofilling transformers with alternative insulating liquids has become a growing trend. However, retrofilling power transformers remains uncertain, as more residual mineral oil compromises K‐class flame retardancy, and its impact on environmental performance has yet to ...
Zhenfu Tang, Yihua Qian, Dan Zhou, Wei Hu, Feipeng Wang, Yang Xu   +5 more
wiley   +1 more source

Vacuum-gap electrostatic multilayer actuators for space robotics. [PDF]

Nat Commun
Sîrbu ID, Mazzotta A, Tosi U, Bortoluzzi D, Mattoli V, Moretti G, Fontana M.   +6 more
europepmc   +1 more source

Micro Partial Discharge Characteristics of SF6 Under DC Voltage

High Voltage, EarlyView.
ABSTRACT In gas‐insulated high‐voltage direct current (HVDC) devices, micro partial discharges (PD) caused by micro‐protrusions or surface roughness on conductors or enclosures may not cause immediate insulation system failure due to their weak discharge intensity.
Geng Chen, Jie Wang, Chuanyang Li, Cong Wang, Youping Tu   +4 more
wiley   +1 more source

Effects of Current Output Modes on Corrosion Resistance of Micro-Arc Oxidation Black Coatings on Aluminum Alloy. [PDF]

Materials (Basel)
Zhou S, Tong R, Li H, Tao X, Chen J.
europepmc   +1 more source

Threshold Currents of Vacuum Arcs With Tungsten and Copper Cathodes

High Voltage, EarlyView.
ABSTRACT This paper presents the results of an experimental study aimed at determining the threshold current for triggering a vacuum arc discharge, the probability of arc ignition and the average arc operation time depending on the current for tungsten and copper electrodes.
P. S. Mikhailov, I. L. Muzyukin, I. V. Uimanov, D. L. Shmelev, S. A. Barengolts   +4 more
wiley   +1 more source

Enhanced high voltage insulation performance of HTV silicon rubber nanocomposites filled with nano-TiO₂ for outdoor applications. [PDF]

Sci Rep
Rehman AU, Khan MS, Khattak A, Ahmad N, Imran K, Khan Y, Alkhalid KH.   +6 more
europepmc   +1 more source

Post‐Arc Transient Dielectric Recovery Characteristics of Vacuum Interrupter in the Large‐Capacity Generator Circuit Breaker

High Voltage, EarlyView.
ABSTRACT Large‐capacity generator circuit breaker (GCB) based on vacuum interrupter technology is the key power equipment to ensure the safe operation of the power system. When the short‐circuit current was forced to cross zero, the large‐capacity GCB was difficult to generate a zero‐voltage environment through freewheeling, the vacuum interrupter (VI)
Xiangyu Han, Fei Yang, Yili Chen, Yunqi Wang, Chenle Zhai, Xuliang Zhao, Zhaowei Diao, Yi Wu, Mingzhe Rong   +8 more
wiley   +1 more source

A Novel Functional Accelerated Thermal Aging Methodology for Single-Phase Dielectric Immersion Coolants. [PDF]

ACS Omega
Van Vaerenbergh B, Kerbrat M, Struelens P.   +2 more
europepmc   +1 more source

Resistivity and Tensile Strength of Al–Mg–Si Alloy Wire Conductors

High Voltage, EarlyView.
ABSTRACT Aluminium alloy is potentially used for power transmission lines due to its light weight and high strength. The aluminium alloy wire conductors with different Mg and Si contents were studied through electrical resistivity and mechanical properties.
Jing Chen, Chongjun Tian, Jinghui Gao, Lisheng Zhong   +3 more
wiley   +1 more source

The Use of Metal Oxides (Al₂O₃ and ZrO₂) and Supports (Glass and Kaolin) to Enhance DBD Plasma-Catalytic CO₂ Conversion. [PDF]

Materials (Basel)
Dorosz A, Zaraska K, Lewak M, Małolepszy A, Jaworski J, Moskal A.   +5 more
europepmc   +1 more source