本标准推荐了测量额定电压高达550kV的高压直流（HVDC）挤压电缆空间电荷的最佳实践。重点是样品的极化时间、去极化时间、加热和冷却。特别参考了负载循环鉴定试验（预鉴定或型式试验负载循环）期间进行的空间电荷测量。本标准的最终目标不是检查是否符合空间电荷或电场的任何最大可接受极限；在此，评估负载循环鉴定试验期间电缆绝缘壁中电场分布的变化。

This standard recommends best practices for the measurement of space charge on high-voltage direct-current (HVDC) extruded cables having rated voltage up to 550 kV. Focus is on poling time, depolarization time, heating and cooling of specimens. Particular reference is made to space charge measurements to be carried out during load cycle qualification tests (either prequalification or type test load cycles). The ultimate goal of this standard is not checking the compliance with any maximum acceptable limit of either space charge or electric field; rathere, assessing the variation of the electric field profile in the cable insulation wall during load cycle qualification tests.