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Lecturer(s)
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Novák Miroslav, Ing. Ph.D.
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Eichler Jakub, Ing. Ph.D.
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Course content
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Lectures 1. Analysis of electrical circuits, voltage and current definition, basic circuit elements, circuit solutions using Kirchhoff's laws. Solving AC circuits 2. Requirements for electric low-power and high-power distribution systems. Equipment for the power distribution. Types of electrical distribution systems specifics in medical operations, types of networks (TN, TT, IT). Normal operating parameters of the supply network, including limits and fault states. 3. Protection against dangerous touch, sizing of wires. 4. IT networks in healthcare facilities: isolation transformers, insulation status monitors, parameters, sizing, operation, and fault states. 5. Theory of electrical protection. Types of protection devices and marking. Protection selectivity. Electrical protection in the low voltage networks. 6. Fuses, circuit breakers, overcurrent relays, guards, and protection of electrical lines. Protection of electric motors, transformers, and lighting systems. 7. Overvoltage protection of electrical equipment and data lines. 8. Power supplies: distribution, sizing, operation, behavior in non-standard states, typical failures. 9. Backup of power supplies for 1st and 2nd degree of importance, backup sources, switching, and coordination. 10. Electromagnetic Compatibility (EMC), disturbances and consequences, principles of elimination of emissions, principles of decreasing sensitivity to environmental impacts Practical classes 1. Examples of determining the categories of premises and determining external influences, repeating circuit calculations (MUN, MSP). 2. Calculations of RLC circuits 3. Measurement of IT networks on laboratory benches, normal operating condition, single-pole ground fault, double-pole, system shift by another source 4. Measurement of fluctuations of parameters in the LV power supply network with the Norma 5000/Yokogawa VT5000 analyzer. 5. Measurement of the tripping characteristics of the circuit breaker 6. Measurement of leakage currents and tripping characteristics of the residual current device. 7. Measurement of the parameters of the isolating transformer, no-load measurement, short-circuit, frequency characteristic, and measurement of mutual winding capacitance
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Learning activities and teaching methods
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Monological explanation (lecture, presentation,briefing), Demonstration, Laboratory work, E-learning
- Class attendance
- 70 hours per semester
- Semestral paper
- 20 hours per semester
- Preparation for laboratory testing; outcome analysis
- 30 hours per semester
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Learning outcomes
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Health service impose severe requirements on reliability, power supply backup, protection, space lighting, state monitoring and last but not least on the electromagnetic compatibility. Within this context there are used specific technical and safety technique and precautions. Practical lessons help to manage this specific field of electrical engineering.
Students will acquire the basic concepts of the power electronic circuits features and application with focus on health service sphere. The practical lessons bring skills of basics electrical measurements.
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Prerequisites
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Passing of "Theoretical electrotechnics" TEE*Z supposed
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Assessment methods and criteria
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Combined examination
Active attendance on practical classes, preparing reports from measurements, credit test, term paper, written exam - calculations and theory, summary oral exam
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Recommended literature
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ČSN EN 61557-8 ed. 2:2008-1 Hlídače izolačního stavu v rozvodných sítích IT..
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ČSN 33 2140:1986-10 a TNI 332140:2007-12 Elektrický rozvod v místnostech pro lékařské účely..
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IEC 60364-7-710 ed. 2:2006 a prHD 60364-7-710 Electrical instalation of buildings. Part 7-710: Requirements for special instalations or locations - Medical locations..
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Fencl, F. Elektrický rozvod a rozvodná zařízení. Praha: ČVUT, 2003.
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Honys, V. Ochrana před úrazem elektřinou.. Praha: IN-EL, 1999.
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Kříž, M. Dimenzování a jištění elektrických zařízení, tabulky a příklady. Praha: IN-EL, 2001.
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Rous, Z. Přepěťové ochrany v elektrotechnických zařízeních do 1000 V. Praha: IN-EL, 1999.
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ROZMAN, J. Elektronické přístroje v lékařství. Praha: Academia, 2006. ISBN 80-200-1308-3.
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