JICABLE HVDC'17 DOSSIER 2 94 ZREE N°1/2018 Surge and extended overvoltage testing of HVDC cable systems JWG B4/B1/C4.73 Markus Saltzer; ABB Switzerland Ltd., (Switzerland), markus.saltzer@ch.abb.com Minh Nguyen-Tuan; SuperGrid Institute, (France), minh-2.nguyen-tuan@edf.fr Alessandro Crippa; CESI S.p.A., (Italy), alessandro.crippa@cesi.it Simon Wenig, Max Goertz; Karlsruhe Institute of Technology (KIT), (Germany), simon.wenig@kit.edu; max.goertz@kit.edu Hani Saad; RTE, (France), hani.saad@rte-france.com Carsten Bartzsch, Pritam Chakraborty, Luigi Colla, Yujun Fan, Mingli Fu, Vincent Joubert, Jon Ivar Juvik, Tanumay Karmokar, Bahram Khodabakchian, Amit Kothari, Willem Leterme, Jerome Mathot, Soren Nyberg, Amit Kumar Saha, Antonios Tzimas, Roland D. Zhang Introduction Cigre JWG B4/B1/C4.73 held its kick-off meeting in March 2016. It has the task of looking into surges and extended overvoltages testing for HVDC cable systems. More speci- fically, the goal is to reconsider temporary overvoltages ex- perienced by the cable within HVDC transmission systems, given various converter configurations, respectively system topologies, i.e. monopole, symmetrical monopole, bipole etc. Fur