3AH5 Vacuum Circuit-Breaker For Standard Applications Siemens Medium Voltage © Siemens AG 2009 Sector Energy, Business Unit Medium Voltage

3AH5 Vacuum Circuit-Breaker Directory Technical Data Portfolio Product Features Details Applications September 2009

3AH5 Vacuum Circuit-Breaker 1. Technical Data Rated voltage up to 36 kV Short-circuit breaking current up to 31,5 kA Operating current up to 2500 A Mechanical operating cycles 10,000 (M2) Electrical operating cycles 10,000 (E2, C2) September 2009

3AH5 Vacuum Circuit-Breaker 2. Portfolio September 2009

3AH5 Vacuum Circuit-Breaker 3. Product Features Main Data 12, 17,5, 24 & 36 kV 800 to 2500 A 13,1 to 31,5 kA Up to 10,000 mechanical operating cycles Type tested according to IEC 62271-100 Your Benefit Usage for all standard application in medium voltage Compact dimensions Maintenance free up to 10,000 operating cycles September 2009

3AH5 Vacuum Circuit-Breaker 3. Product Features Column construction Vacuum interrupters are vertically arranged Free convection possible Solid insulation material is minimised as far as possible Your Benefit High mechanical stability Compact dimensions No forced-cooling up to 2500 A Very low fire load Easy access to all parts September 2009

3AH5 Vacuum Circuit-Breaker 4. Details Hand crank coupling Push button “ON” Indicator „Closing spring charged“ Counter for “Operating cycles” Push button “OFF” Indicator „Closed/Open“ September 2009

3AH5 Vacuum Circuit-Breaker 4. Details Operating unit Cooling element Auxiliary switch Gearbox Shunt release Opening magnet Closing spring September 2009

3AH5 Vacuum Circuit-Breaker 4. Details Secondary equipment Basic equipped Fully equipped September 2009

Comparison: Use of Insulation and Plastics 3AH5 Vacuum Circuit-Breaker 4. Details Comparison: Use of Insulation and Plastics 3AH5 column construction SION shell construction Competition embedded pole 12 kV 4 kg 13 kg 17 kg 14 kg 23 kg 2500A Phase barrier drive 10 kg PMA 160 mm Phase barriers 17,5 kV 16 kg PMA 150/160 mm   Phase barrier contact arms September 2009

Applications for 3AH5 5. Switching of Standard Applications Requirements Switching of transformers, drives, capacitors, filter circuits, overhead lines and cables Synchronising of parallel networks Rapid load transfer of consumers to other incoming feeder Auto-reclosing in overhead lines to clear transient faults or short-circuits Switching of short-circuits Industry Application “Refinery” September 2009

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