INTERNATIONAL ELECTROTECHNICAL COMMISSION Report on SC 17A Activity HV switchgear & controlgear Denis Dufournet Anne Bosma A3-14 (AG 01 ) 013 IWD

2 Content  SC 17A Activity  Documents published since  Work in progress  Work on standardization of UHV Switchgear  Present work of SC 17A  Presentation of the work of SC A3

SC 17A – Recently Published Documents  Published in  Amendment 2 to IEC (Ed. 1.0): Alternating current disconnectors and earthing switches (Addition of 1100 kV and 1200kV)  Published in  Amendment 1 to IEC (Ed 1.0): Alternating current series capacitor by-pass switches (Addition of 1100 and 1200 kV)  Published in  IEC (Ed 1.0): Use and handling of SF 6  IEC (Ed 1.0): Alternating current high-speed earthing switches for secondary arc extinction on transmission lines 3

4 SC 17A – Work in Progress  CDV Stage  IEC (Ed 1.0): Generator circuit-breakers  CD Stage  IEC (Ed 2.0): Common specifications  IEC (Amendment 2 to Ed. 2): HV circuit breakers  IEC : Switches with rated voltage > 52kV

5 SC 17A - Work on Standardization of UHV  Revised standards  IEC : Common specifications (work completed)  IEC *: Circuit-breaker (work completed)  IEC : Synthetic testing (work completed)  IEC *: Disconnectors and earthing switches (work completed)  IEC : Inductive load switching (work completed)  New documents  IEC *: HSES (work completed)  IEC *: Guide for the application of -100 & related standards (work completed) * Input from CIGRE WG A3.22/28

6 Present Work in SC 17A  Start or continue the revision of some standards  Common specifications (running, started in 2011)  Circuit-breakers (started in 2013)  Synthetic testing (started in 2013)  * Disconnectors and earthing switches (started in 2013)  Switches with rated voltage > 52kV (started in 2013)  Inductive load switching (will start in 2014)  Reclosers (started in 2013)  Application of IEC (will start in 2014)  Generator circuit-breaker (ongoing) * Input from CIGRE WG A3.28 (e.g. bus transfer current switching)

Presentation of the work of SC A3  SC 17A has decided to set aside 0,5 days at its next meeting in Tokyo (November 2014) to present the ongoing work in CIGRE SC A3  It is the intention to include this presentation in all future meetings of SC 17A 7

INTERNATIONAL ELECTROTECHNICAL COMMISSION Thank you for your attention. Any questions?