Results 21 to 30 of about 10,590,427 (302)

Grid-like Vibration Measurements on Power Transformer Tank during Open-Circuit and Short-Circuit Tests

open access: yesEnergies, 2022
In this work, the vibrations on the surfaces of the tank wall, stiffeners, and the cover of a 5 MVA transformer experimental model were measured during open-circuit and short-circuit transformer tests.
Karlo Petrović   +2 more
doaj   +1 more source

Design of high-power intrinsically safe power supply based on fault current change rate

open access: yesGong-kuang zidonghua, 2021
In order to solve the problems of low output power, poor protection effect, and slow dynamic response speed of existing intrinsically safe power supply, a high-power intrinsically safe power supply based on fault current change rate is designed.
KANG Qian   +3 more
doaj   +1 more source

Consistency evaluation of the current distribution of short-circuit tests in AT feeding systems for high-speed railways

open access: yesJournal of Modern Transportation, 2018
To improve the accuracy of fault location system, several short-circuit tests need to be conducted before being brought into service in autotransformer (AT) feeding systems for high-speed railways in China.
Qing-an Ma, Wei Liu
doaj   +1 more source

Thermal Stability Analysis and Design for Electrical Product in Short-Circuit Fault

open access: yesElektronika ir Elektrotechnika, 2022
In short-circuit faults, the thermal stability of the metal conductor is an important factor for electrical products, which directly affects the safe use of the products.
Jing Hao, Jungang Zhou, Yachao Wang
doaj   +1 more source

Study on Inter-Turn Short Circuit Test for Distribution Reactor [PDF]

open access: yes, 2021
Inter-turn short circuit is a common fault in reactor. In view of the current situation of insufficient condition based maintenance of reactor, an on-line monitoring method suitable for Inter-turn short circuit fault of distribution reactor was proposed in this paper.
Wei Qin, Tiansong Gu, Hongliang Li
openaire   +2 more sources

Research of IGBT failure energy transmission and energy shock

open access: yes机车电传动, 2023
As a power switching device, IGBT has many advantages, such as high current density and low saturation voltage and it is widely used in various power engineering fields. However, IGBT is the most important failure part of power converter system. When the
MA Yao   +4 more
doaj  

Short-Circuit making of medium voltage load break switches using a grid Connected test circuit [PDF]

open access: yes, 2018
The load break switch is an important component in the distribution grid. Besides its capability to break load currents reliably, it has to be able to make short-circuit currents according to the IEC 62271 standard. In this paper, the process of making a
Kaveh Niayesh   +5 more
core   +1 more source

A Hierachical Infrastrucutre for SOC Test Management [PDF]

open access: yes, 2003
HD2BIST - a complete hierarchical framework for BIST scheduling, data-patterns delivery, and diagnosis of complex systems - maximizes and simplifies the reuse of built-in test architectures.
Zorian Y.   +4 more
core   +1 more source

Short-Circuit Tests and Simulations with a SCFCL Modular Assembly

open access: yesPhysics Procedia, 2012
AbstractShort-circuit tests and simulations carried out with a resistive SCFCL modular assembly are presented. Each SCFCL moduleconsistsofaBSCCO2212bulkcoilwithacritical currentofabout520Aat77K.Seriesandparallel connection were tested. In series connection, prospectivecurrent as high as 67 kArms was limited to about 11 kApeak in the first peak.
Sousa, W. T. B. de   +6 more
openaire   +2 more sources

Research of Aviation Electric Arc and Short Circuit Damage and Protection

open access: yesHangkong gongcheng jinzhan, 2020
Aviation electric arc and short circuit may lead to irreparable loss. It is of great significance to study the harm of aviation electric arc and short circuit and its protection measures.
CAO Tao
doaj   +1 more source

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