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1 Contents
1 Contents
2 General 7
2.1 Introduction 7
2.1.1 Arrangement of the Operating Instructions 7
2.1.2 Communication by Means of the Operating Instructions 7
2.2 Safety Instructions 8
3 Description 11
3.1 Technical Data 11
3.1.1 Standards, Regulations 11
3.1.2 Operating Temperatures 11
3.1.3 Insulation Rating 12
3.1.4 Electrical Data 12
3.1.5 Operating Times 13
3.1.6 Arc Quenching Medium SF
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14
3.1.7 Auxiliary Switch 14
3.1.8 Anti-Condensation Heaters 15
3.1.9 Reference Contact IK-3 15
3.1.10 Further Technical Data 15
3.2 Circuit-Breaker 16
3.3 Pole Column 18
3.4 Interrupter Unit 20
3.5 Arc Quenching 22
3.6 Spring Drive Mechanism of the Circuit- Breaker 24
3.6.1 Charging the Closing Spring 24
3.6.2 Closing 24
3.6.3 Opening 25
3.6.4 Operating Sequence 25
3.7 Function of the Spring Drive Mechanism 26
3.7.1 Charging the Closing Spring 26
3.7.2 Closing 29
3.7.3 Tripping 34
3.8 Control 35
3.8.1 Spring Winding Mechanism 36
3.8.2 Gas Monitoring 36
3.8.3 Lockouts 39
3.8.4 Motor Control 39
3.8.5 Anti-Condensation Heaters 39
3.8.6 Signals 39
3.8.7 Free Auxiliary Switch Contacts 40
3.8.8 Operating Cycle Counter 40
3.9 Reference Contact IK-3 41
3.9.1 Introduction 41
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