Evolution of a low-voltage electric arc

Mercier, M.; Cajal, D.; Laurent, Alain; Velleaud, G.; Gary, F.

doi:10.1088/0022-3727/29/1/017

Cited by 11 publications

(10 citation statements)

References 4 publications

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“…Capacitive readings under magnetic fields can be accomplished with no or very small amounts of heat produced, and capacitance measurements can be more sensitive than resistive measurements, which could allow the magnetic bit density to be increased. After the first experimental realization of magnetoelectric coupling in antiferromagnetic Cr 2 O 3 , [3] similar effects have been observed at low temperatures in several other antiferromagnetic materials, including BaMnF 4 , [4] GdVO 4 , [5] GdAlO 3 , [6] DyPO 4 , [7] Gd 2 CuO 4 , [8] YMnO 3 , [9] and EuTiO 3 . [10] Among the ferromagnetic insulators investigated, large magnetodielectric coupling near ferromagnetic Curie temperatures was found in BiMnO 3 at 100 K [11] and in SeCuO 3 at 25 K. [12] Very recently, we reported a large magnetodielectric effect in La 2 NiMnO 6 close to its ferromagnetic Curie temperature of 285 K. [13] None of these materials showed a significant change in dielectric constant with changing magnetic field at or above room temperature.…”

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confidence: 58%

Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe₂O₄

et al. 2006

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A very large drop in dielectric constant upon application of small magnetic fields is observed at room temperature for LuFe2O4 (see figure). Such behavior is unprecedented and indicates a strong coupling of spins and electric dipoles at room temperature. This behavior of LuFe2O4 is apparently related to its ferroelectricity, which occurs through the highly unusual mechanism of Fe2+ and Fe3+ ordering.

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confidence: 58%

Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe₂O₄

et al. 2006

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“…The same group of authors used the same method in another paper [46] and estimated the velocity of arc displacement on the conductor rails. It depends on the maximum value of the current as shown in Fig.…”

Section: Experimental Work On the Behavior Of The Arc In Chambermentioning

confidence: 99%

Overview of Current Research into Low-Voltage Circuit Breakers

Freton¹,

Gonzalez²

2009

TOPPJ

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The low-voltage circuit breaker has been used for many years for network and persons protection. The review papers existing on these devices generally deal with electrical aspects or macroscopic information on the arc but few concern the "fine" understanding of arc behaviour from its ignition between the opening contact to the current limitation stage due to its presence in the splitter plates. In this paper, we focus our attention on this point. We firstly describe the working of such devices, their limitations and the different phenomena occurring during breaking. Then, the difficulties involved with understanding the behaviour of the arc are identified and discussed in two main sections: physical arc characteristics and the study of arc movement during the breaking process. A review of the papers dealing with these subjects is proposed: both experimental and theoretical results from the literature are confronted and discussed and technical difficulties identified.

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“…This device has already allowed us to contribute to the survey of the behaviour of the arc in a particular configuration of the breaking system [1,2]. In the present study we aim to be more precise about the movement of the arc in a structure similar to low-voltage automatic circuit breakers used in industry.…”

Section: Introductionmentioning

confidence: 99%

A study of the various phases of the break in a low-voltage circuit breaker thanks to the magnetic camera

Cajal¹,

Laurent²,

Gary³

et al. 1999

J. Phys. D: Appl. Phys.

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By analysing the magnetic induction created by the arc motion from the outside of a breaking system at numerous points, it is possible to determine the position of the average line of current that magnetically represents the arc. This method is called the 'magnetic camera' method. It had to be adapted to the circuit breaker studied here. Thanks to the method three phases of the course of the electrical arc are highlighted for a typical experiment: expansion of the arc, commutation from the mobile contact onto the lower rail and displacement through the splitter plates. In order to be more precise about the duration of the commutation phase, during which more than a single line of current must exist, an improved model of the arc motion has been developed.

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Evolution of a low-voltage electric arc

Cited by 11 publications

References 4 publications

Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe₂O₄

Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe₂O₄

Overview of Current Research into Low-Voltage Circuit Breakers

A study of the various phases of the break in a low-voltage circuit breaker thanks to the magnetic camera

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Evolution of a low-voltage electric arc

Cited by 11 publications

References 4 publications

Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe2O4

Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe2O4

Overview of Current Research into Low-Voltage Circuit Breakers

A study of the various phases of the break in a low-voltage circuit breaker thanks to the magnetic camera

Contact Info

Product

Resources

About

Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe₂O₄

Giant Room–Temperature Magnetodielectric Response in the Electronic Ferroelectric LuFe₂O₄