Results 101 to 110 of about 8,801 (231)

Combined Effect of the Parameters of Vacuum Interrupter and L-C Circuit Upon Arc Re-Ignition in HVDC Circuit Breakers

IEEE Access
The new horizons for HVDC systems and their applications has intensified the research in HVDC protection systems. The HVDC circuit breakers (CB) has been the center of the protection systems with vacuum interrupters (VIs) showcasing a great potential for
Tamer Eliyan, Ali Saeed Almuflih, Z. M. S. Elbarbary, Fady Wadie   +3 more
doaj   +1 more source

A Dual Enhancement Switching Technology for Vacuum Circuit Breakers in Various AC-Based Operational Environments

IEEE Access
Vacuum circuit breakers (VCBs) have gained the attention of the medium voltage community for their involvement in various applications. However, the problem of arc-reignition is still under investigation with R-C snubber circuits considered as the most ...
Tamer Eliyan, Saad F. Al-Gahtani, Z. M. S. Elbarbary, Fady Wadie   +3 more
doaj   +1 more source

Электроснабжение ж/д станции Томск-2 [PDF]

, 2016
Объектом исследования является электрическая часть ж/д станции Томск-2 вагоноремонтного депо. Цель работы – проектирование схемы электроснабжения завода, выбор оборудования. В процессе исследования проводился сбор исходных данных в ходе производственной
Данилевская, Татьяна Викторовна
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Full-scale simulation of high-current vacuum arc in vacuum interrupter under axial magnetic field

AIP Advances
Most existing studies on vacuum arcs confine the arc to the space directly between the electrodes. Contacts are often slotted to facilitate magnetic field control of the arc, thereby artificially restricting the arc-burning zone and overlooking the ...
Yueran Liu, Shuangwei Zhao, Xiaolong Huang, Qiang Zhang, Yanmin Liu, Shenli Jia   +5 more
doaj   +1 more source

Investigation on the Thermal Characteristics of 33-kV DC Vacuum Circuit Breakers Using 3-D Modeling

IEEE Access
In this article, a 3D model is used to investigate the thermal performance of the 33 kV Direct Current Vacuum Circuit Breakers (DCVCBs) when operating under normal current as well as under faulty conditions.
Ossama E. Gouda, Ahmed Hamdy Elsersy, Matti Lehtonen, Mohamed M. F. Darwish   +3 more
doaj   +1 more source

Spacecraft nitrogen generation [PDF]

Two spacecraft nitrogen (N2) generation systems based on the catalytic dissociation of hydrazine (N2H4) were evaluated. In the first system, liquid N2H4 is catalytically dissociated to yield an N2 and hydrogen (H2) gas mixture.
Carlson, J. N., Kacholia, K. K., Marshall, R. D., Powell, J. D.   +3 more
core   +1 more source

Investigation of Transient Recovery Voltage on Circuit Breaker [PDF]

, 2018
For technically adequate interruptive performance, circuit breaker (CB) must be able to sufficiently interrupt current and voltage transients in power system network.
Abdullh, Omar, Awogbemi, Bidemi
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Fault Diagnosis of Medium Voltage Circuit Breakers Based on Vibration Signal Envelope Analysis. [PDF]

Sensors (Basel), 2023
Wu Y, Zhang J, Yuan Z, Chen H.
europepmc   +1 more source

Apollo command module mockup flammability tests [PDF]

Apollo command module mockup flammability tests using three different ...
Bricker, R. W., Crabb, J. P., Primeaux, G. R., Schomburg, C.   +3 more
core   +1 more source

Электроснабжение Солкинского месторождения [PDF]

, 2016
Цель работы – проектирование схемы электроснабжения предприятия, выбор оборудования. В результате была спроектирована схема электроснабжения от подстанции энергосистемы, до конечного электроприемника.
Стрелков, Николай Владимирович
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