Revision of qualification procedures for high voltage and extra high voltage AC extruded undergroud cable systems

In 2002, WG B1.06 has been launched to deal with the revision of qualification procedures of underground HV and EHV cable systems with possible changes in cables or accessories. WG B1.06 has completed this task in recommending a simplified "extension of qualification" test procedure for changes in EHV cable systems. For HV systems, a prequalification procedure is recommended for cable system design with high stresses when no earler experience is available.