Fundamentals of Electrical Devices

Přednášející:

Cvičící:

Předmět zajišťuje:

katedra elektrických pohonů a trakce

Anotace:

Switching arc in contact switching apparatus, environmental influence on arc property. Switching ability of switching devices. Electrical contacts. Protecting of electric circuits. Breaking of electric circuits under current limiting. Breaking of special electric circuits. Switching over voltage. Surge arresters, its properties, characteristics and application

Požadavky:

Activity on laboratory training, measurement remarks and measurement protocols

Osnova přednášek:

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, oil, SF6. Vacuum switching arc

5.Circuit breaker breaking ability

6.Switching device and electrical circuit interaction

7.DC circuit breakers extinguishing chambers

8.AC circuit breakers extinguishing chambers

9.Fuse theory

10.Over-voltage limiting devices

11.Contact theory

12.Contact models

13.Special electric circuits breaking

14.Network switching conditions

Osnova cvičení:

1.Laboratory rules, safety instructions

2.DC circuits breaking with contacts in series - part 1

3.DC circuits breaking with contacts in series - part 2

4.AC circuits breaking with air extinguishing chamber - part 1

5.AC circuits breaking with air extinguishing chamber - part 2

6.AC circuits breaking with vacuum extinguishing chamber - part 1

7.AC circuits breaking with vacuum extinguishing chamber - part 2

8.AC circuits interruption with current limiting - part 1

9.AC circuits interruption with current limiting - part 2

10.Fuses time-current characteristics measurement - part 1

11.Fuses time-current characteristics measurement - part 2

12.Over voltage protector limiting characteristics measurement - part 1

13.Over voltage protector limiting characteristics measurement - part 2

14.Final measurement, assement

Cíle studia:

Studijní materiály:

1.Flurscheim, C. H. Power circuit breaker theory and design. IEE 1985

2.Ragaller, A. Current interruption in HV networks. Mc Graw - Hill. 1978

Poznámka:

Rozsah výuky v kombinované formě studia: 14p+6l

Další informace:

Pro tento předmět se rozvrh nepřipravuje

Předmět je součástí následujících studijních plánů: