1. INTERNATIONAL ELECTROTECHNICAL COMMISSION Report on SC 17A Activity HV switchgear & controlgear Denis Dufournet Anne Bosma 2014-03 A3-14 (AG 01 ) 013 IWD

2. 2 Content  SC 17A Activity  Documents published since 2013-01  Work in progress  Work on standardization of UHV Switchgear  Present work of SC 17A  Presentation of the work of SC A3

3. SC 17A – Recently Published Documents  Published in 2013-02  Amendment 2 to IEC 62271-102 (Ed. 1.0): Alternating current disconnectors and earthing switches (Addition of 1100 kV and 1200kV)  Published in 2013-05  Amendment 1 to IEC 62271-109 (Ed 1.0): Alternating current series capacitor by-pass switches (Addition of 1100 and 1200 kV)  Published in 2013-08  IEC 62271-4 (Ed 1.0): Use and handling of SF 6  IEC 62271-112 (Ed 1.0): Alternating current high-speed earthing switches for secondary arc extinction on transmission lines 3

4. 4 SC 17A – Work in Progress  CDV Stage  IEC 62271-37-013 (Ed 1.0): Generator circuit-breakers  CD Stage  IEC 62271-1 (Ed 2.0): Common specifications  IEC 62271-100 (Amendment 2 to Ed. 2): HV circuit breakers  IEC 62271-104: Switches with rated voltage > 52kV

5. 5 SC 17A - Work on Standardization of UHV  Revised standards  IEC 62271-1: Common specifications (work completed)  IEC 62271-100*: Circuit-breaker (work completed)  IEC 62271-101: Synthetic testing (work completed)  IEC 62271-102*: Disconnectors and earthing switches (work completed)  IEC 62271-110: Inductive load switching (work completed)  New documents  IEC 62271-112*: HSES (work completed)  IEC 62271-306*: Guide for the application of -100 & related standards (work completed) * Input from CIGRE WG A3.22/28

6. 6 Present Work in SC 17A  Start or continue the revision of some standards  62271-1Common specifications (running, started in 2011)  62271-100 Circuit-breakers (started in 2013)  62271-101 Synthetic testing (started in 2013)  62271-102* Disconnectors and earthing switches (started in 2013)  62271-104Switches with rated voltage > 52kV (started in 2013)  62271-110Inductive load switching (will start in 2014)  62271-111Reclosers (started in 2013)  62271-306 Application of IEC 62271-100 (will start in 2014)  62271-37-013Generator circuit-breaker (ongoing) * Input from CIGRE WG A3.28 (e.g. bus transfer current switching)

7. 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

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