| Course Unit Code | 420-4031/01 |
|---|
| Number of ECTS Credits Allocated | 7 ECTS credits |
|---|
| Type of Course Unit * | Compulsory |
|---|
| Level of Course Unit * | Second Cycle |
|---|
| Year of Study * | First Year |
|---|
| Semester when the Course Unit is delivered | Summer Semester |
|---|
| Mode of Delivery | Face-to-face |
|---|
| Language of Instruction | Czech |
|---|
| Prerequisites and Co-Requisites | Course succeeds to compulsory courses of previous semester |
|---|
| Name of Lecturer(s) | Personal ID | Name |
|---|
| ORS60 | Ing. Petr Orság, Ph.D. |
| Summary |
|---|
| Switchboards are part of domestic, industrial and electricity distribution. They must be safe and made of materials capable of withstanding mechanical, electrical and thermal effects and environmental influences. All these requirements must be respected in their design and after their production it is necessary to verify their function by measurement. Various software tools are used to effectively design and verify the electrical installation and protection of the switchgear. |
| Learning Outcomes of the Course Unit |
|---|
| The student will know the basic standards, legislation, methods of design, construction, manufacture and verification of switchboards. He will also acquire professional competencies in the use of software tools in the design, connection and measurement of LV switchboards. |
| Course Contents |
|---|
Lectures:
1. Switchboard, definition of the term, standards, legislation, division by type, spatial division of the switchboard, equipment, conditions of connection to the distribution network in terms of electrical engineering
2. Principles of design and verification methods of LV switchgear according to the standard IEC 61439, characteristic parameters, technical requirements, conditions for installation, environmental conditions, enclosure and degree of protection, assumed load factor
3. Construction of LV switchboard according to standard IEC 61439, production, tests and use
4. Thermal effects of electric current, heat transfer in the switchboard, dimensioning of conductors with respect to temperature, laying and grouping of conductors, permissible temperatures and current loads
5. Calculation of switchboard heating according to IEC 60890, switchboard cooling, heat exchangers
6. Force effects of electric current, dimensioning of switchboard conductors with regard to mechanical stress
7. Safety and protection elements of LV switchboards, dimensioning with regard to the correct function of protections, short-circuit analysis, Sicher calculation program
8. Principles of use and installation of surge protectors in the switchboard, types of surge protectors
9. Methodology of design of switchboard elements, temperature measurement
10. Rittal Panel Configurator
11. Dimensioning of switchboard air conditioning, Rittal Therm calculation program, link to EPLAN ProPanel design software
12. EPLAN Electric P8, creation of switchgear project documentation, EPLAN Data Portal, linking to Rittal Therm configurator
13. Software systems for visualization of physical fields of switchboards
14. Requirements for electromagnetic compatibility of switchboards, categories of environmental conditions
Exercises:
1. Calculation of electrical parameters of live parts of the switchboard from geometric dimensions, work with tripping characteristics of safety elements, connection request
2. Determination of assumed loads of the power system /house electrical installation, load list, electrical load list
3. Compilation of checklist to design switchgear assemblies in accordance with IEC 61439, determination of working conditions, choice of cabinet type, dimensions and size of the internal space of switchboard
4. Dimensioning of power system/house electrical installation with regard to temperature and storage
5. Calculation of contact resistance, power loss and switchboard heating according to IEC 60890
6. Calculation of mechanical stress of switchboard buses due to electrodynamic forces
7. Design of overcurrent and short-circuit protection of switchboard, calculation of fault loop current and short-circuit currents
8, 9. Design of a house switchboard
10. Wiring and measuring the design of the house switchboard
11.12. Design of an electrical installation control of a smart house
13. Connection and measurement of the electrical installation of the smart house
14. Credit test, defense of projects
Projects
1. House switchboard design
2. Design of smart house electrical installation control
|
| Recommended or Required Reading |
|---|
| Required Reading: |
|---|
Bhel: Handbook of Switchgears, McGraw-Hill, 2005
Set of standards IEC 61439 Low voltage switchboards
IEC TR 60890 A method of temperature-rise verification of low-voltage switchgear and controlgear assemblies by calculation
|
Havelka, O. Stavba elektrických přístrojů 1. VUT Brno 1984, ISBN 55-650-84
Herzig, Z. Stanovení oteplení rozváděčů výpočtem. Praha: STRO.M,spol. s.r.o., 1995
Sada norem ČSN EN 61439 Rozváděče nízkého napětí
ČSN IEC 890+A1. Metoda stanovení oteplení extrapolací pro částečně typově zkoušené rozváděče (PTTA) pro spínací a řídicí zařízení nízkého napětí
ČSN EN 33 2000-4-41, ed. 2. Elektrické instalace nízkého napětí – Část 4-41: Ochranná opatření pro
zajištění bezpečnosti – Ochrana před úrazem elektrickým proudem
ČSN EN 62305-1, ed.2. Ochrana před bleskem – Část 1: Obecné principy
ČSN 38 1754 Dimenzování elektrického zařízení podle účinků zkratových proudů |
| Recommended Reading: |
|---|
Kratzke M., Dufner, J.: Work book „The standard IEC 61439 in practice“, ABB
Guta, J.B.: Fundamentals of Switchgear & Protection, S.K. Kataria & Sons. Edition, 2011
HD 60364 Low voltage electrical installations
Software manuals by Eplan, Rittal, OEZ
|
Kunc, J.: Elektroinstalace krok za krokem, Grada, 2010
Dudek, J. Projekce a konstrukce vyhrazených technických zařízení elektro I., Modelování a simulace silnoproudých systémů, VŠB-TU Ostrava, 2014
Manuály software fy Eplan, Rittal, OEZ |
| Planned learning activities and teaching methods |
|---|
| Lectures, Individual consultations, Tutorials, Project work, Field trip |
| Assesment methods and criteria |
|---|
| Task Title | Task Type | Maximum Number of Points
(Act. for Subtasks) | Minimum Number of Points for Task Passing |
|---|
| Credit and Examination | Credit and Examination | 100 (100) | 51 |
| Credit | Credit | 40 | 21 |
| Examination | Examination | 60 | 16 |