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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.00 seconds. 
Usage of CAD Systems in Area of Electrical apparatuses
 Bojanovský, Lukáš ; Kuchyňková, Hana (referee) ; Valenta, Jiří (advisor)
This thesis presents current possibilities of parametric modelling. In the first section the new features of Autodesk Inventor Series 10 and process of designing model of arc chute cut of circuit-braker BD250 are described. A next section of the thesis describes funcionality of double contact element during switching off, creation and disappearance of electric arc. The principle of electric arc exctincion using magnetic exhaustion into arc chute with the participation of dynamic forces. The data format IGES was used for animation creation and also there is a short description of the history and origin of the format. The position animation in Autodesk Iventor 10 was used for designing animation.
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Experimental verification of properties of circuit breaker quenching chamber
 Kadrnka, Petr ; Vávra, Zdeněk (referee) ; Valenta, Jiří (advisor)
The circuit breakers are able to switch on and off automatically either the short circuit currents up to the limits of their breaking capacity. While the disconnection of the contacts in the switching devices are generated by the arc then it is needed to put it out quickly. A manner of the arcing in the electrical switching devices is influenced by several different factors. It must be taken into account the dynamics of a plasma, a current flowing in the electrodes, a flowing stream in a plasma and a magnetic field generated by a flowing current. This paper is devoted to describe the manner of the arcing in the arc chamber. The experiments carried out in an experimental way attempt to explain, specify and thoroughly comprehend the movements and the characteristics of the arc in a metal arc and in a metal enclosure circuit breaker.
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National Repository of Grey Literature : 12 records found   previous11 - 12  jump to record:
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