| Course Unit Code | 410-4119/01 |
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| Number of ECTS Credits Allocated | 6 ECTS credits |
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| Type of Course Unit * | Choice-compulsory type A |
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| Level of Course Unit * | Second Cycle |
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| Year of Study * | First Year |
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| Semester when the Course Unit is delivered | Winter Semester |
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| Mode of Delivery | Face-to-face |
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| Language of Instruction | Czech |
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| Prerequisites and Co-Requisites | There are no prerequisites or co-requisites for this course unit |
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| Name of Lecturer(s) | Personal ID | Name |
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| KAC37 | doc. Ing. Petr Kačor, Ph.D. |
| Summary |
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This course follows the Electrical Apparatus course. This subject amount of protection, fuse and circuit breaker constructions are deal with. Function of contactors in electrical circuit and their construction. Overvoltage in power system and overvoltage diverters. Design and project power resistors, inductors and capacitors. There is also discussed basic problems of electric contacts and DC and AC electromagnets.
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| Learning Outcomes of the Course Unit |
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| Studens know electrical terminology of electrical devices. They also will describe the basic design of electric devices, setting of tripping units, measurement of basic characteristic and practical using of electric devices in area of electrical power engineering and electric driving systems. |
| Course Contents |
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Lectures:
1.Transients effects and their influences to design and operation of electric apparatus
2.Protection of electric circuits, fuses, circuit-breakers, current limiting function, I2t let-through energy
3.Fuse - basic design, operation, time interval of electric arc burning, extinquishing of electric arc
4.Circuit Breakers - basic design, operation, tripping units, electromagnetic trip
5.Contactors - basic design, operation, life cycle, basic wiring of electric circuits with contactors
6.Selectivity, protection, setting of protection units
7.Conductors - conductors design, skin-effect, DC and AC resistance
8.Electrical contacts - basic design, basic types of contacts, used materials
9.Electromagnet - design, energy converter
10.DC and AC electromagnet - static and transient force characteristic
11.Separators, electromagnetic holders, permanet magnets
Exercises:
Basic design of contacts of switching aparatus
Basic design and computing of DC electromagnet
Final Test
Laboratories:
Measurement of thermal trip of low voltage circuit breaker
Measurement of temperature rise of low voltage circuit breaker
Measurement of let-through energy of low voltage circuit breaker
Measurement and wiring of electrical contactors
Projects:
Calculation of the contact system of an MV switch.
Design of DC shell electromagnet. |
| Recommended or Required Reading |
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| Required Reading: |
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1. Mason, J.R.: Switch engineering handbook, New York, 1993
2. Slade, P. G. - Electrical Contacts, CRC Press, 1999, ISBN: 0824719344
3. Flurscheim, Ch. H. - Power Circuit Breaker Theory and Design, IEE, 1982, ISBN: 0906048702
4. Nakanishi - Switching Phenomena in High-Voltage Circuit Breakers, CRC Press, 1991, ISBN: 0824785436
5. Tajev, I.S.: Električeskije apparaty, Moskva, Energija 1977 |
1. Havelka, O.: Elektrické přístroje, SNTL Praha, 1985
2. Bull, B.K.: Elektrické přístroje, SNTL Praha, 1978
3. Cigánek, L.: Elektrické přístroje spínací, ochranné a řídící, SNTL Praha, 1956
4. Tajev, I.S.: Električeskije apparaty, Moskva, Energija 1977
5. Mason, J.R.: Switch engineering handbook, New York, 1993
6. Slade, P. G. - Electrical Contacts, CRC Press, 1999, ISBN: 0824719344
7. Flurscheim, Ch. H. - Power Circuit Breaker Theory and Design, IEE, 1982, ISBN: 0906048702
8. Nakanishi - Switching Phenomena in High-Voltage Circuit Breakers, CRC Press, 1991, ISBN: 0824785436
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| Recommended Reading: |
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1. Flurscheim, Ch. H. - Power Circuit Breaker Theory and Design, IEE, 1982, ISBN: 0906048702
2. Nakanishi - Switching Phenomena in High-Voltage Circuit Breakers, CRC Press, 1991, ISBN: 0824785436
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1. Flurscheim, Ch. H. - Power Circuit Breaker Theory and Design, IEE, 1982, ISBN: 0906048702
2. Nakanishi - Switching Phenomena in High-Voltage Circuit Breakers, CRC Press, 1991, ISBN: 0824785436 |
| Planned learning activities and teaching methods |
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| Lectures, Tutorials |
| Assesment methods and criteria |
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| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
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| Exercises evaluation and Examination | Credit and Examination | 100 (100) | 51 |
| Exercises evaluation | Credit | 40 | 20 |
| Examination | Examination | 60 | 11 |