为使额定电压大于30 kV(Um = 36 kV)小于等于150 kV(Um = 170 kV)而采用的挤包绝缘电源电缆及其配件的试验方法和要求

[中文适用范围]： 本国际标准规定了固定装置和额定电压高于 30 kV (Um = 36 kV) 至 150 kV (Um = 170 kV) 的电力电缆系统@单独的电缆和单独的附件@的测试方法和要求。这些要求适用于通常安装和操作条件下的单芯电缆和单独屏蔽的三芯电缆及其附件@，但不适用于特殊电缆及其附件@，例如海底电缆@，因为可能需要对标准测试进行修改。必要时或可能需要设计特殊的测试条件。本标准不包括挤包绝缘电缆和纸绝缘电缆之间的过渡接头。 [外文原描述]： IEC 60840:2011 specifies test methods and requirements for power cable systems, cables alone and accessories alone, for fixed installations and for rated voltages above 30 kV (Um = 36 kV) up to and including 150 kV (Um = 170 kV). The requirements apply to single-core cables and to individually screened three-core cables and to their accessories for usual conditions of installation and operation, but not to special cables and their accessories, such as submarine cables, for which modifications to the standard tests may be necessary or special test conditions may need to be devised. This standard does not cover transition joints between cables with extruded insulation and paper insulated cables. The significant technical change with respect to the previous edition is as follows: - introduction of a prequalification test procedure for cables with high electrical stresses and tested as a cable system including accessories. NOTE: For a more detailed history of events leading up to this fourth edition, see the Introduction.