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See Chinese contents: GB/T 31489.1-2015 GB/T 31489.1-2015: D.C. extruded cable systems for power transmission at a rated voltage up to and including 500 kV -- Part 1: Test methods and requirements
This Part of GB/T 31489 specifies the test methods and requirements for D.C. extruded cable systems for power transmission at a rated voltage up to and including 500 kV (including DC land cables, DC submarine cables and their accessories). This Part applies to XLPE insulated DC power cables of 500 kV and below installed on land and on the seabed. It also applies to land cable accessories such as connectors and terminals for land cables, as well as submarine cable and #39;s factory joints (soft joints), repair joints, transition joints and terminals between submarine DC cables and land DC cables, and other submarine cable accessories.
