@article{oai:repo.qst.go.jp:00048927,
 author = {Lampasi, Alessandro. and Zito, Pietro and Novello, Luca and Matsukawa, Makoto and 島田, 勝弘 and Burini, Filippo and Taddia, Giuseppe and Tenconi, Sandro and Matsukawa, Makoto and Shimada, Katsuhiro},
 journal = {Fusion Engineering and Design, Proceedings of the 29th Symposium on Fusion Technology (SOFT-29)},
 month = {Nov},
 note = {Switching Network Units (SNUs) are inserted in the power supply circuits of modern tokamaks for plasma initiation. In the framework of the “Broader Approach” agreement, the four SNUs for the superconducting modules of the JT-60SA Central Solenoid will be procured by European Union through the Italian Agency ENEA.The design is based on the synchronized operations of a light electromechanical contactor and of a static switch to combine the benefits of both devices. The adopted solutions could be extended to many fusion and industrial applications. A SNU was able to divert to a breakdown resistance (from 0.25 Ω to 3.75 Ω) currents up to 20 kA, producing a voltage drop up to 5 kV in less than 100 µs with a transient overvoltage limited to about 200 V.The tests showed good performance repeatability for all the SNUs. The accuracy of all the breakdown resistors was well within ±2%. Specific tests showed that they could dissipate much more than 360 MJ.},
 pages = {163--168},
 title = {Final tests of the four switching network units procured by the European Union for JT-60SA},
 volume = {124},
 year = {2017}
}