Course detail

Electrical apparatus

FEKT-BEPRAcad. year: 2011/2012

Not applicable.

Language of instruction

Czech

Number of ECTS credits

6

Mode of study

Not applicable.

Guarantor

doc. Ing. Bohuslav Bušov, CSc.

Department

Department of Power Electrical and Electronic Engineering (UVEE)

Learning outcomes of the course unit

Not applicable.

Prerequisites

Not applicable.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Not applicable.

Assesment methods and criteria linked to learning outcomes

Not applicable.

Course curriculum

Lectures
1. Main functions of el. apparatuses, lv and hv el. apparatuses.
2. Switching on in el. circuits.
3. Heat effects of el. current.
4. Force effects of el. current.
5. Switching off in el. circuits without switching arc. Electrical discharges. Switching process with el. arc. Recovery voltage.
6. Switching off of opperational currents and short-circuit currents.
7. Electrical contacts.
8. El. apparatuses without el. arc and operational el. apparatuses. Design and properties.
9. Power el. apparatuses. Design and properties.
10. Instrumental transformes and gaseous insulated systems with SF6.
11. Principles of el. devices protection.
12. Protection of lines against oveload.
13. Protection of lines againts short-circuit currents.
Laboratories:
1. Switching on of DC and AC currents.

2. Measurement of teperature rise of switching devices
3. Recovery voltage in RLC circuit without el. arc.
4. DC arc characteristics.
5. Measurement on lv circuit breaker.

6. AC arc characteristic.
7. Measurement on thermal relay.
8. Measurement on residual current device (RCD).

9. Protection against overload, time-current characteristics.
10. Protection against short-circuit current, work with computational support.

Work placements

Not applicable.

Aims

Not applicable.

Specification of controlled education, way of implementation and compensation for absences

Not applicable.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Havelka, O. a kol.: Elektrické přístroje, SNTL, 1985.
Browne,T.,E.: Circuit interruption,N.York,1984.

Recommended reading

Vávra, Z., Vaněk, J.: Vysoké napětí a elektrické přístroje, Laboratorní a numerická cvičení, Část II: Elektrické přístroje, elektronický text, FEKT VUT v Brně, 2003.

Classification of course in study plans

  • Programme EEKR-B Bachelor's

    branch B-SEE , 2. year of study, summer semester, compulsory

  • Programme EEKR-CZV lifelong learning

    branch ET-CZV , 1. year of study, summer semester, compulsory

Type of course unit

 

Lecture

39 hours, optionally

Teacher / Lecturer

doc. Ing. Bohuslav Bušov, CSc.
Ing. Jiří Valenta, Ph.D.

Syllabus

1. Main functions el. apparatuses for low voltage and high voltage.
2. Switching on in el. circuits.
3. Heat effect of current.
4. Force effect of current.
5. Switching off in el. circuits without switching arc. Electrical discharges. Switching proccess with el. arc. Recovery voltage.
6. Switching off opperational and short currents.
7. Electrical contacts.
8. Simple and operational el. apparatuses. Design and properties.
9. Power el. apparatuses. Design and properties.
10. Measure transformes and gaseous insulated systems with gas SF6.
11. Principles of el. equipment protection.
12. Protection against electric line overloading.
13. Protection electric line against short currents.
Laboratories:
1. Switching on DC and AC currents.
2. Measurement of el. apparatus heating curve.
3. Determination of recovery voltage in RLC circuit without el. arc.
4. Measurement of DC arc characteristics.
5. Measurement on circuit breaker.
6. Measurement of AC arc characteristic.
7. Measurement on thermal relay.
8. Measurement on residual current device.
9. Protection against overloading, time-current characteristics.
10. Protection against short current, setting of modern devices.

Laboratory exercise

26 hours, compulsory

Teacher / Lecturer

doc. Ing. Bohuslav Bušov, CSc.
Ing. Zbyněk Makki, Ph.D.
Ing. Lukáš Mišinger
Ing. Jiří Valenta, Ph.D.
Jaroslav Žvátora

Syllabus

Laboratories:
1. Switching on DC and AC currents.

2. Measurement of el. apparatus heating curve.
3. Determination of recovery voltage in RLC circuit without el. arc.
4. Measurement of DC arc characteristics.
5. Measurement on circuit breaker.

6. Software support of projecting, SPIDER.

7. Measurement of AC arc characteristic.
8. Measurement on thermal relay.
9. Measurement on residual current device.
10. Measurement on electromagnet, tensile force.

11. Protection against overloading, time-current characteristics.
12. Protection against short current, setting of modern devices.