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A Sample ARC Detector Panel
Pala, Lukáš ; Valenta, Jiří (referee) ; Kadlec, Radim (advisor)
In the introduction an electric arcs creation in low voltage networks is discussed, followed by evaluation of verification measurements with AFDD. A serial arc generator is designed in accordance with easy manipulation and low maintenance requirements. Technological solution for safe fault simulation is described similarly as particular function sections of demonstration panel. Schematic diagrams of power and electronic circuits are attached.
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Project Documentation of Electrical Wiring for the Family House in Scope for Realization
Orság, Štěpán ; Janík, Daniel (referee) ; Mastný, Petr (advisor)
The bachelor's thesis is focused on project documentation for a family house in the scope for implementation. The thesis is divided into two parts. The first part presents a theoretical analysis of data distribution and materials for the design of lighting and lightning protection system. The intelligent Loxone system, which is used in a family house project, is also presented in the first part. The second part of the bachelor's thesis is focused on creation of an implementation project, which is consists of text and drawing part. The project includes budget control and risk control. The design of lighting and lightning protection system is also included here. Work drawings of wiring in the house, parts of lightning protection and design of switchboards are integral part of the thesis.
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Residual current device behavior under switching of non-sinusoidal residual currents
Horký, Jakub ; Dostál, Lukáš (referee) ; Valenta, Jiří (advisor)
This bachelor deals with behaviour of a residual-current device during disconnection non-sinusoidal residual current. In the first, theoretical part, basic characteristics and properties of electrical devices are described. Attention is devoted to residual-current device, its structural part, parameters and types. Afterwards, there are described normative requirements of the residual-current device type A in the course of tests. The second part is a practical part. The residual-current device is subjected to residual currents with direct current components (according to the standard), thereby it is checked if it works correctly, it means, if the device is capable of being cut off, At the end of the bachelor, where is a sample laboratory task that demonstrates a check the behavior of the residual-current device at switching off the non-sinusoidal current.
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Electrical installation in apartment buildings
Pírek, Ondřej ; Formánek, Marian (referee) ; Doležalová, Jana (advisor)
Bachelor thesis describes wiring system in apartment buildings. Theoretical part deals with legislation, main house conduit, wiring materials, heavy and low current, and also with Smart Homes. In this thesis, there is also an analytical part which is applied to specified building. In this section we have calculation for specific cable, design of wiring materails and calculation of the annual electric energy consumption. Third part includes project with technical report and attachment with drawings.
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Testing of arc protection AFDD during normal and fault conditions
Křepela, František ; Dostál, Lukáš (referee) ; Kaser, Jakub (advisor)
The bachelor´s thesis deals with AFDD, a device that protects the low voltage electrical installations against fire caused by a serial or parallel arc fault. Although MCB and RCD can mostly disconnect the circuit when the parallel arc appears, only AFDD can detect the series arc fault. AFDD can be used only as additional protection. The theoretical part of this thesis describes the creation of electric arc, causes of house fires, and explains the principle of the Arc Fault Detection Device. The purpose of the practical part is to create real malfunctions that cause a series arc in the circuit and to test the function of AFDD. The next purpose is to repair the arc generator and to verify the function of AFDD using different materials of electrodes.
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Mathematical model of RCCB sensitive to pulsating direct currents
Kaser, Jakub ; Dostál, Lukáš (referee) ; Valenta, Jiří (advisor)
This Thesis deals with problematics of residual current circuit breaker and its eventual operation malfunction due to DC components. There are magnetic phenomena described in details which occur inside of the apparatus. Consequently, there is proposed a mathematical model of the circuit breaker in Simulink program. The comparison of B-H curves of transformer core is composed and achieved results are incorporated into the proposed model in order to verify a correct operation of the circuit breaker and its reaction to different conditions. The verification of the symmetry of the magnetic field in residual current circuit breaker in Ansys Maxwell program is also a part of the study.
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Testing of arc protection AFDD during normal and fault conditions
Křepela, František ; Dostál, Lukáš (referee) ; Kaser, Jakub (advisor)
The bachelor´s thesis deals with AFDD, a device that protects the low voltage electrical installations against fire caused by a serial or parallel arc fault. Although MCB and RCD can mostly disconnect the circuit when the parallel arc appears, only AFDD can detect the series arc fault. AFDD can be used only as additional protection. The theoretical part of this thesis describes the creation of electric arc, causes of house fires, and explains the principle of the Arc Fault Detection Device. The purpose of the practical part is to create real malfunctions that cause a series arc in the circuit and to test the function of AFDD. The next purpose is to repair the arc generator and to verify the function of AFDD using different materials of electrodes.
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Electrical installation in apartment buildings
Pírek, Ondřej ; Formánek, Marian (referee) ; Doležalová, Jana (advisor)
Bachelor thesis describes wiring system in apartment buildings. Theoretical part deals with legislation, main house conduit, wiring materials, heavy and low current, and also with Smart Homes. In this thesis, there is also an analytical part which is applied to specified building. In this section we have calculation for specific cable, design of wiring materails and calculation of the annual electric energy consumption. Third part includes project with technical report and attachment with drawings.
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Project Documentation of Electrical Wiring for the Family House in Scope for Realization
Orság, Štěpán ; Janík, Daniel (referee) ; Mastný, Petr (advisor)
The bachelor's thesis is focused on project documentation for a family house in the scope for implementation. The thesis is divided into two parts. The first part presents a theoretical analysis of data distribution and materials for the design of lighting and lightning protection system. The intelligent Loxone system, which is used in a family house project, is also presented in the first part. The second part of the bachelor's thesis is focused on creation of an implementation project, which is consists of text and drawing part. The project includes budget control and risk control. The design of lighting and lightning protection system is also included here. Work drawings of wiring in the house, parts of lightning protection and design of switchboards are integral part of the thesis.
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|
|
Mathematical model of RCCB sensitive to pulsating direct currents
Kaser, Jakub ; Dostál, Lukáš (referee) ; Valenta, Jiří (advisor)
This Thesis deals with problematics of residual current circuit breaker and its eventual operation malfunction due to DC components. There are magnetic phenomena described in details which occur inside of the apparatus. Consequently, there is proposed a mathematical model of the circuit breaker in Simulink program. The comparison of B-H curves of transformer core is composed and achieved results are incorporated into the proposed model in order to verify a correct operation of the circuit breaker and its reaction to different conditions. The verification of the symmetry of the magnetic field in residual current circuit breaker in Ansys Maxwell program is also a part of the study.
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