标称电压大于1 000 V系统的室内和室外支柱绝缘子和支柱绝缘子单元的尺寸

[中文适用范围]： 该版本取代了 IEC 273 (1979) 第二版。适用于额定电压大于 1 000 V 的交流电系统上运行的电气装置或设备中用于室内或室外使用的陶瓷材料或玻璃支柱绝缘子和支柱绝缘子单元，以及用于室内使用的有机材料支柱绝缘子且频率不大于100赫兹。它也可被视为直流系统中使用的绝缘子的临时标准。 [外文原描述]： This edition supersedes the second edition of IEC 273 (1979). Applies to post insulators and post insulator units of ceramic material or glass intended for indoor or outdoor service, and to post insulators of organic material intended for indoor service in electrical installations or equipment operating on alternating current systems with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It may also be regarded as a provisional standard for insulators for use on direct current systems.