直流系统用高压绝缘子的人工污秽试验

[中文适用范围]： 本技术规范适用于确定用于户外且暴露于污染环境中的陶瓷和玻璃绝缘子在直流系统（系统最高电压大于±1000 V）下的直流耐受特性。这些测试不适用于聚合物绝缘子、涂油绝缘子或特殊类型的绝缘子（例如，带有半导体釉层或涂有有机绝缘材料的绝缘子）。本技术规范的目的是规定适用于架空线路、变电站和牵引线路绝缘子以及套管的污染试验程序。在采取适当预防措施以避免内闪络的情况下，也可将其应用于空心绝缘子。在将这些程序应用于包含空心绝缘子的设备时，相关技术委员会应考虑其对任何内部设备的影响以及可能需要的特殊预防措施。 [外文原描述]： IEC TS 61245:2015(E) is applicable for the determination of the d.c. withstand characteristics of ceramic and glass insulators to be used outdoors and exposed to polluted atmospheres, on d.c. systems with the highest voltage of the system greater than +/- 1 000 V. These tests are not applicable to polymeric insulators, to greased insulators or to special types of insulators (e.g. insulators with semiconducting glaze or covered with any organic insulating material). The object of this technical specification is to prescribe procedures for artificial pollution tests applicable to insulators for overhead lines, substations and traction lines and to bushings. This second edition cancels and replaces the first edition published in 1993. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Corrections and the addition of explanatory material; b) The addition of Clause 4.4.2 on atmospheric correction; c) The change of upper limit of volume conductivity of tap water for insulator cleaning to 0,1 S/m; d) The extension to UHV voltages; and e) The addition of Annex B "Determination of the withstand characteristics of insulators" and Annex E "Supplementary information on artificial pollution tests on insulators for voltage systems of +/- 600 kV and above (solid layer method procedure B). The contents of the corrigendum of August 2018 have been included in this copy.