Home / Standards / GB/T 31489.3-2020 GB/T 31489.3-2020 Active D.C. extruded cable systems for power transmission at a rated voltage up to and including 500kV—Part 3: D.C. submarine cables 额定电压500kV及以下直流输电用挤包绝缘电力电缆系统 第3部分:直流海底电缆 Standard Type GBT ICS 29.060.20 CCS K13 Status 现行 Issue Date 2020-12-14 Implementation 2021-07-01 Responsible Dept 中国电器工业协会 Drafting Unit N/A