Switchgear - Basic vocational knowledge (Institut für Berufliche Entwicklung, 54 p.)

(introduction...)

Preface

1. General remarks

2. Important components of switches

2.1. Switching contacts

2.2. Arcs

2.3. Switch mechanisms

3. Low-voltage circuit breakers

3.1. Classification and tasks of the circuit breakers

3.2. Circuit breakers

(introduction...)

3.2.1. Universal circuit breakers

3.2.2. Compact circuit breakers

3.2.3. High-speed switches for d.c. installations

3.2.4. Protective switches

3.3. Overload circuit breakers

(introduction...)

3.3.1. Multisection cam-operated switches

3.3.2. Contactors

3.4. On -load switches

(introduction...)

3.4.1. Load-break switches in slim design

3.4.2. Installation switcher

3.5. Off-load switches

4. Relays and control devices

4.1. Relays

(introduction...)

4.1.1. Neutral or auxiliary relays

4.1.2. Time relays

4.1.3. Undervoltage and overvoltage relays

4.1.4. Overcurrent relays

4.1.5. Overcurrent time relays

4.1.6. Magnetic overcurrent relays

4.1.7. Signal relays

4.2. Control devices

4.2.1. Discrepancy switches

4.2.2. Control discrepancy switches