Working groups area This page gives access to areas dedicated to the convenor and participants to each SC B3 official working body. When clicking on a specific WG, you will get a summary of the WG objectives. Then, to enter the protected area you will need to type the password. SAG  Strategic Advisory Group CAG  Customer Advisory Group TAG  Tutorial Advisory Group CG B3/B5/A3  Cooperation Group B3/B5/A3 WG B3.11  Combining Innovation with Standardisation WG B3.12  Obtaining value from Condition Monitoring WG B3.13  Reducing replacement time of HV Equipment WG B3/C1/C2.14  Circuit Configuration Optimisation JWG B3/B1.09  Application of Long High Capacity Gas Insulated Lines in Tunnels WG B3.17  Residual Life Concepts Applied to HV GIS WG B3.18  SF6 Tightness Guide WG B3.20  Mixed Technologies Switchgear MTS WG B3.22  Technical requirements for substations exceeding 800 kV WG B3.15  Cost Reduction of Air Insulated Substations WG B3.02  Gas Insulated Substations WG B3.21  Turnkey Substations WG B3.06  Substation Management WG B3.10  Primary /Secondary system interface modelling for total asset performance optimization WG B3.01  Substation concepts