Circuit-breaker ratings: weighing high interrupting capacity and short-time current ratings

Roybal, D.D.

doi:10.1109/mia.2005.1458278

Cited by 4 publications

(3 citation statements)

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“…For an effective cabinet panel, the MCCB should increase the interrupting capability and satisfy the compact requirement for installation. There is a need for standardization of the smaller sized cabinet panels [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Simple Analysis Method for the Interrupting Capability of a Contact System in a Molded Case Circuit Breaker

Choi¹,

Jee²

2017

Journal of Electrical Engineering and Technology

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-This paper focuses on understanding the interrupting capability of an arc contact system in a molded case circuit breaker (hereafter MCCB). We selected four types of MCCBs and analyzed the magnetic flux density distributions in the contact systems caused by the fault currents. We ascertained that the magnetic flux density profile varies according to the shape of the contact system and was asymmetric at both the ends of an arc, perpendicular to the arc column because of the magnetic grid installed in the contact system. The asymmetric difference creates a magnetic force that pushes the arc current outwards and provides an interrupting capability. We have introduced a simple analysis method for determining the interrupting capability of the contact system for an MCCB by the arcdriving magnetic flux density.

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Section: Introductionmentioning

confidence: 99%

Simple Analysis Method for the Interrupting Capability of a Contact System in a Molded Case Circuit Breaker

Choi¹,

Jee²

2017

Journal of Electrical Engineering and Technology

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“…Circuit breakers are made in varying sizes, from small devices that protect an individual household appliance up to large switchgear designed to protect high voltage circuits feeding an entire city. Low-voltage types (less than 1000 V AC ) are common in domestic, commercial and industrial applications ( Table I-1 [1,2]). General presentations of the low-voltage circuit breaker and of the phenomena occurring in them can be found in the literature for instance in the papers of McBride J.W.…”

Section: Introductionmentioning

confidence: 99%

“…(1) The first is pressure: due to the temperature increase and thus to the high pressure in the opening contact region compared to the ambient pressure in the splitting chamber, the arc is pushed away from the contacts and into the chamber. (2) The second force is due to the current circulating on the rails. The currentcarrying path creates a magnetic field which, combined with the current circulation in the arc, creates a magnetic force which pushes the arc into the splitting chamber.…”

Section: Introductionmentioning

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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Effect of previously install circuit breaker due to the upcoming new generating station

Garg

Sinha

2016

2016 IEEE 1st International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES)

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Circuit-breaker ratings: weighing high interrupting capacity and short-time current ratings

Cited by 4 publications

References 1 publication

Simple Analysis Method for the Interrupting Capability of a Contact System in a Molded Case Circuit Breaker

Simple Analysis Method for the Interrupting Capability of a Contact System in a Molded Case Circuit Breaker

Overview of Current Research into Low-Voltage Circuit Breakers

Effect of previously install circuit breaker due to the upcoming new generating station

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