Working Groups area There is 14 working body within SC A2. There is five WGs, one JWG, two TFs and six AGs. To access WG areas, you need a password. If you have lost your password, please contact your convenor. WG A2.24  Thermal Performances JWG A2/B4-28  HVDC Converter Transformer WG A2.32  Cooper Sulphide in Power Transformer Insulation WG A2.33  Transformer Fire Safety Practices WG A2.34  Guide for Transformer Maintenance WG A2.35  Experiences in service with new liquids WG A2.36  Guide for Transformer Procurement Process WG A2.37  Transformer Reliability Survey WG A2.38  Transformer Thermal Modelling AG A2.1  Strategic Planning AG A2.2  Tutorial AG A2.3  Customer AG A2.4  Transformer Technology AG A2.5  Transformers Users AG A2.6  Transversal CIGRE Activities Survey AG A2.7  Ultra High Voltage Transformer AC&DC