D.C. extruded cable systems for power transmission at a rated voltage up to and including 500 kV—Part 1:Test methods and requirements
全国电线电缆标准化技术委员会(SAC/TC 213)
GB/T 31489的本部分规定了额定电压500 kV及以下直流输电用挤包绝缘电力电缆系统（包括直流陆地电缆、直流海底电缆及其附件）的试验方法和要求。
本部分适用于安装在陆地和海底的500 kV及以下交联聚乙烯绝缘直流电力电缆，也适用于陆地电缆的接头和终端等陆地电缆附件,以及海底电缆的工厂接头（软接头）、修理接头、海底直流电缆与陆地直流电缆间过渡接头和终端等海底电缆附件。
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