Physical Fundamentals of Electric Apparatus

The course is a substitute for:

Physical Fundamentals of Electric Apparatus (14FZP)

Lecturer:

Tutor:

Supervisor:

Department of Electric Drives and Traction

Synopsis:

Switching arc physical fundamentals. Switching arc theory. Switching arc in DC and AC devices. Interaction between switching devices and interrupting circuits. Switching-off capabilities of switching devices. Problems in DC and AC switching devices. Theory of fuses. Basic circuit protections. Over-voltage limiting elements. Contact theory. Contact models. Special switching systems.

Requirements:

Measure protocols, control test,

Syllabus of lectures:

1. Physical fundamentals of switching arc

2. Switching arc theory

3. Short and long switching arc in circuit breakers

4. Switching arc in the air, in oil, in SF6. Vacuum switching arc

5. Switching-off capabilities.

6. Interaction between switching devices and interrupting circuit

7. DC circuit breakers

8. AC circuit breakers

9. Fuse theory

10. Over-voltage limiting devices

11. Contact theory

12. Contact models

13. Special switching conditions

14. Network switching conditions

Syllabus of tutorials:

1. Introduction

2. DC circuits interruption

3. DC circuits interruption

4. AC circuits interruption

5. AC circuits interruption

6. Transient recovery voltage

7. Vacuum circuit breaker

8. Control test

9. Heat transfer in fuses

10. Heat transfer in fuses

11. Testing of fuses

12. Testing of fuses

13. AC magnets

14. AC magnets. Credit

Study Objective:

Study materials:

Literature will be specified by the lecturer

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Heavy-current Engineering - Technological Systems- structured studies (compulsory elective course)
• Heavy-current Engineering - Electric Drives- structured studies (compulsory elective course)
• Heavy-current Engineering - Electroenergetics- structured studies (compulsory elective course)
• Heavy-current Engineering - Electrical Engineering Applications- structured studies (compulsory elective course)