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Impact of Vacuum Switchgear Applications at Transmission Voltages: Insights from WG A3.27

This report summarizes the activities and progress of Working Group A3.27, focusing on the applications of vacuum switchgear (VCB) at transmission voltages since its inception in 2009. Led by convener R. Smeets from the Netherlands, the group consists of 31 members who share knowledge and experiences on the implications of VCB compared to SF6 technology. The report outlines discussions held in various international meetings, recent tutorials, and forthcoming publications, providing valuable insights into industry expectations and market developments related to high-voltage switchgear.

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Impact of Vacuum Switchgear Applications at Transmission Voltages: Insights from WG A3.27

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  1. A3-14 (AG 01 ) 015 IWD WG title and general information WG A3.27 The Impact of the Application of Vacuum Switchgear at Transmission Voltages Convener: R. Smeets (Netherlands) Year of Kick-off: 2009Secretary: L. Falkingham (UK) Activity Report 2013 Number of Members: 31 Regular Members: 26 Corresponding Members: 5 • Retiring Members: • New Members: WG A3.27 AR 2014

  2. Progress of work, documents to be discussed during the SC A3 meeting and future program Recent meetings: April 2012: Tokyo, Japan (6th) November 2012: Berlin, Germany (7th) May 2013: Galveston, USA (8th and last) Draft TB submitted to SC. Tutorial given CIGRE Colloquium, Vienna, Sept. 2011 (1.5 h)Tutorial given ISDEIV (vacuum switching conf.), Russia, Sept. 2012 (2 h)Tutorial given IEEE Switchgear Committee, USA May 2013 (3 h)Tutorial given CIGRE Colloquium Auckland, Sept. 2013 (1 h)Tutorial given ICEPE (switchgear) Conference, Matsue, Japan Oct. 2013 (2 h)Poster at CIGRE 2012 ConferenceElectra paper 2014 Technical activities & discussion items WG A3.27 AR 2014

  3. Publication on behalf of the WG (Title, way of publication, stage of preparation, approximate date of final version Draft TB submitted to SC. Chapters:1. Executive summary2. Introduction3. Differences between SF6 – vacuum: device implications4. Differences between SF6 – vacuum: system implications5. Existing experience6. Expectations, hesitations of applications of HV VCB in the future7. Products on the market and in development8. Standardization and testing9. Summary and conclusions Publications • Draft ready for circulation within the SC: Q1 2014 • Aim for final version for approval: Q1 2014 Electra paper Q2 2014 WG A3.27 AR 2014

  4. Membershipwith approval of the last SC meeting WG A3.27 AR 2014

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