Results 11 to 20 of about 448 (266)

High current interruption in vacuum circuit breakers [PDF]

open access: yesProceedings of 17th International Symposium on Discharges and Electrical Insulation in Vacuum, 1997
The aim of this project was to find a correlation between contact gap length and switching behavior of a vacuum circuit breaker. A large number of interruption experiments were executed in a vacuum chamber with butt type contacts made of Cu, CuCr 50/50 and AgWC. The currents to be interrupted varied from 2.5 to 32 kA.
Binnendijk, M.   +4 more
openaire   +2 more sources

DC vacuum circuit breaker

open access: yesCIRED - Open Access Proceedings Journal, 2017
In the last years the progressive increase of distributed and non-programmable energy sources arise the interest in the use of DC for medium-voltage distribution systems. The study focuses on the design considerations of the apparatus required to support the management and protection of these applications.
Lars Liljestrand   +4 more
openaire   +1 more source

Design and Implementation of an Auto-Oriented Bidirectional ZCS Hybrid Circuit Breaker

open access: yesIEEE Access, 2021
To protect power systems from severe short circuit faults, the zero-current switching (ZCS) technique is widely accepted due to its fast interruption speed.
Zhuangxian Jiang   +5 more
doaj   +1 more source

Investigations on the safe stroke of mechanical HVDC vacuum circuit breaker

open access: yesThe Journal of Engineering, 2019
Here, a DC vacuum arc interruption test based on the hybrid high-speed actuator and the method of commutation is carried out in the synthetic loop system. The safe stroke is one of the basic breaking parameters.
Ning Xia   +5 more
doaj   +1 more source

Simulation Analysis for Opening Performance of Medium Voltage Vacuum Circuit Breaker Based on ADAMS and Maxwell

open access: yesMATEC Web of Conferences, 2017
The circuit breakers play a important role in control and protect the power systemand the vacuum circuit breaker has beenwidely used in the field of medium voltage with its excellent opening performance.Virtual prototyping technology is alsobecamemore ...
Ding Xianliang   +5 more
doaj   +1 more source

Research status and expectation of on-line monitoring technologies of mechanical characteristics of high-voltage vacuum circuit breaker

open access: yesGong-kuang zidonghua, 2016
Basic contents of on-line monitoring technologies of mechanical characteristics of high-voltage vacuum circuit breaker were introduced, and various kinds of methods of on-line monitoring were reviewed.
ZHAO Yang
doaj   +1 more source

Overvoltage Impact on Internal Insulation Systems of Transformers in Electrical Networks with Vacuum Circuit Breakers

open access: yesEnergies, 2020
Vacuum circuit breakers are increasingly used as switching apparatus in electric power systems. The vacuum circuit breakers (VCBs) have very good operating properties. VCBs are characterized by specific physical phenomena that affect overvoltage exposure
Marek Florkowski   +3 more
doaj   +1 more source

DC interruption characteristic of vacuum circuit breaker

open access: yesElectrical Engineering in Japan, 2005
AbstractA high‐speed vacuum circuit breaker (HSVCB) has been investigated. HSVCB makes high‐frequency current superimposed on a fault current so that the current is forced to be zero and is interrupted. Its interruption performance is considered to be dependent on the rate of change of the current (di/dt). As a fundamental research, we investigated the
Odaka, Hiromi   +5 more
openaire   +2 more sources

A novel bidirectional nonuniform hybrid circuit breaker considering different direction protection requirements

open access: yesIET Power Electronics, 2022
Hybrid switching technologies such as zero voltage switching (ZVS) and zero current switching (ZCS) are widely accepted to protect DC power systems from different kinds of faults.
Zhuangxian Jiang   +5 more
doaj   +1 more source

The Influence of Mechanical Deformation Consideration on the Results of the Calculation of the Vacuum Circuit Breaker Drive Shaft

open access: yesJournal of Mechanical Engineering, 2023
One of the important directions of theoretical, computational and experimental research related to the improvement and development of new design elements of modern electrical devices, primarily medium voltage circuit breakers and contactors, is the study
Yevhen I. Baida   +2 more
doaj   +1 more source

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