Results 91 to 100 of about 137,232 (346)

Stator grounding fault severity characterization and novel inverse-time protection method for large generators

International Journal of Electrical Power & Energy Systems
The existing injection-type stator grounding protection schemes for large generators are configured to issue only an alarm signal under high transition resistance grounding fault conditions. Thus, the fault cannot be promptly cleared.
Yikai Wang, Jie Ou, Jian Qiao, Zengping Wang, Xianggen Yin, Chunguang Ren   +5 more
doaj   +1 more source

A TECHNIQUE OF MEASURING OF RESISTANCE OF A GROUNDING DEVICE

Electrical engineering & Electromechanics, 2016
Introduction. Measurement of resistance of the grounding device (GD) by means of a three-electrode system. This requires not only the right choice of installation locations of measuring electrodes, but also the determination of the point of zero ...
I.V. Nizhevskyi, V.I. Nizhevskyi
doaj   +1 more source

Three Realizations and Comparison of Hardware for Piezoresistive Tactile Sensors [PDF]

, 2001
Tactile sensors are basically arrays of force sensors that are intended to emulate the skin in applications such as assistive robotics. Local electronics are usually implemented to reduce errors and interference caused by long wires.
Castellanos Ramos, Julián, Navas-Gonzalez, Rafael Jesus, Oballe-Peinado, Oscar, Sanchez-Duran, Jose Antonio, Vidal-Verdu, Fernando   +4 more
core   +1 more source

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

A Modified Ampacity Calculation Method for High-Voltage Cables Considering Grounding Modes

Applied Sciences
To address the limitation of the IEC 60287 standard in accurately representing the electrothermal characteristics of cables under different grounding conditions, this study proposes a modified equivalent thermal resistance method, using a YJLW03-Z 64/110
Qianqiu Shao, Songhai Fan, Zongxi Zhang, Fenglian Liu, Jinkui Lu, Zhengzheng Fu, Pinlei Lv   +6 more
doaj   +1 more source

A pulse generator with inductive energy storage for measuring the grounding resistance of transmission line towers

Vestnik MGTU, 2018
The pulse method may be used to measure the footing resistance of transmission towers with overhead grounding wires. Measuring systems that obtain the time dependent transient impedance may be used to measure the low-frequency resistance of transmission ...
Kolobov V. V. , Kolobov V. V. , Selivanov V. N.   +2 more
doaj   +1 more source

Effect of topography on subglacial discharge and submarine melting during tidewater glacier retreat. [PDF]

, 2017
-We explored secular variations in subglacial discharge and submarine melting with an idealized model -Subglacial discharge increases as tidewater glaciers retreat along retrograde beds -Submarine melting depends on subglacial discharge and ...
Amundson, Arendt, Arimitsu, Arneborg, Aðalgeirsdóttir, Benn, Carroll, Carroll, Cowan, Cowton, Cuffey, Echelmeyer, Enderlin, Fried, Harrison, Hock, Holland, Howat, Huss, Jackson, Jansson, Jenkins, Kamb, Luckman, Lydersen, McNabb, Meier, Meire, Mortensen, Motyka, Motyka, Motyka, Motyka, Nick, Nick, O'Leary, O'Neel, Pfeffer, Podrasky, Post, Rignot, Rignot, Roe, Schoof, Slater, Slater, Straneo, Truffer, Urbanski, Veen, Veen, Veen   +51 more
core   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Integration and Conventional Systems at STAR

, 2002
At the beginning of the design and construction of the STAR Detector, the collaboration assigned a team of physicists and engineers the responsibility of coordinating the construction of the detector.
Ackerman, Adler, B. Minor, H.S. Matis, Haldeman, P. Salz, R. Jared, R.L. Brown, W. Christie, W.R. Edwards   +9 more
core   +4 more sources