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Measuring RLC on the components of electrical circuits
Pokorný, Marek ; Vítek, Ondřej (referee) ; Veselka, František (advisor)
Aim those work is inform numerator about possibilities and features gauging apparatus 7600 Precision LCR undergrounds and further then about metering paramers R,L,C on components electric standing ,especially then on sliding contacts,with which this work acquaint and how are their characteristics important for correct functionality electrical machine whereof are site rated power.Warp work largely start from manual to apparatus 7600 Precision LCR undergrounds and further then out publication sliding contact in electrical machine - doc. Veselka, doc. Chmelik.
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Proposal of electrical equipment for soaking and drying cores for making castings
Čermák, Jiří ; Hájek, Vítězslav (referee) ; Veselka, František (advisor)
This diploma thesis deals with proposal of electrical equipment for soaking and drying cores for making castings at foundry in a Great Britain. It brings look at system of technical norms ČSN and it compares it with british system of technical norms British standards. The second part of this thesis contains detailed proposal of this equipment, including specification of control system, specification of power supply cables and control cables and particular technological units. The whole project documentation is enclosed as an inseparable attachment of this diploma thesis.
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Diagnosis sliding contact using practical applications "Methods particulate"
Kopecký, Jiří ; Mach, Martin (referee) ; Veselka, František (advisor)
This thesis deals with the sliding contact of electrical machines and its diagnostic methods. Namely, the dust-particles method for assessing the length decrease of brushes is deeply described. Then, usage of the method in industry is described. The comparison of accuracy between manual version and new automated version of the method using computer analysis is presented. The final section is devoted to the practical verification of the new automated version which was developed especially for large machines. Measurements were performed on a small machine.
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Process a review of the specified electrical equipment
Lanc, Rudolf ; Mach, Martin (referee) ; Veselka, František (advisor)
The revision of the electrical equipment means verifying the state of the equipment concerning its safety. The aim of the Bachelor Thesis is the revision of the selected electrical equipment. The particular equipment will undergo a revision, measurements, supervisions, and tests, which are subject of the norms. A revision report will be issued as a result of the established facts, in which possible failures will be described. Further on eventual risks will be explained and techniques how to eliminate them proposed.
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Efficiency Improvement of Small Induction Motors
Vilím, Martin ; Veselka, František (referee) ; Hájek, Vítězslav (advisor)
In this bachelor´s thesis I discuss about asynchronous engines in general, describe their construction and principle of operation, using. It also includes measurements of a specific motor and design engine. The first part deals with theprinciple of the engine options including the fundamental control over speed and torque. The second part deals with the measurement of the size of the searchengine and losses. The last part provides a proposal for a new induction motor.
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Computer aided design at electrotechnics
Tesař, Radek ; Veselka, František (referee) ; Kuchyňková, Hana (advisor)
This work deals with questions how to take advantage of modern technology for support purposes in the projection in electro engineering. It the introduction it informs about common bases of the projecting, purposes and grades of processed documentations. It is followed by the categorization and dividing types of software tools according to the purpose of use linked with the description of historical development of graphic systems, from raster to vector. In the end there is a practical show of documentation realization processed by a specialized instrument Astra92 Inc.
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Diagnostic and improvement of electrical contact
Hrdý, Branislav ; Kuchyňková, Hana (referee) ; Veselka, František (advisor)
The aim of bachelor thesis is create a summary overview of terminals, to obtain information about contruction, materials of the conductive parts of the terminals and its snap methods. The next goal was description of methods of conductors’ construction and snap methods of its con-ductors. All processed information is obtained from the technical literature and from practical knowledge acquired during the measurement and monitoring of analyzed terminals. The final goal was to create an animated 3D model of terminal as a sample of main process of terminals’ working principle. In conclusion of this work is comparison of terminals, and their properties, facts observed during measurement or testing.
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The quality and connectivity el. Network equipment
Rybnikář, Jiří ; Huzlík, Rostislav (referee) ; Veselka, František (advisor)
This paper addresses the issue of revision of electrical equipment according to ČSN 33 1500: 1990 and ČSN 33 2000-6. The aim of this work is to prepare a revision of the connection of electrical machines in the laboratory. When carrying out inspections serious deficiencies were found with respect to electrical safety. They were designed to take remedial steps. Currently electrical equipment is not capable of safe operation.
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