标准摘要
[中文适用范围]: 本标准适用于标称电压大于1000V、频率不大于100Hz的交流架空电力线路中带有陶瓷材料绝缘件的长棒型串绝缘子装置。它也适用于变电站中使用的类似设计的绝缘子。本标准适用于长棒型陶瓷串绝缘子装置,两端带有U形端接头,与舌片耦合,或两端带有插座端接头,与销球耦合。本标准的目的是规定长棒型陶瓷串绝缘子单元的电气和机械特性以及主要尺寸的规定值。本标准适用于轻度污染地区架空线路上使用的串式绝缘子单元,表 1 中给出的爬电距离已相应确定,使用 IEC 60815 建议的 I 级污染 16 mm/kV。爬电距离可用于一些非污染区域。如果特定操作条件需要或允许非标准(更长或更短)爬电距离,则应使用本标准的机械特性和长度 L(参见第 4 条),除非需要特别长的爬电距离需要 L 值大于表1中给出的值。在特殊要求的情况下,例如污染非常严重的地区以及其他特定或极端的环境条件,可能需要改变某些尺寸。注1:只要合理适用,本国际标准也可适用于本标准范围之外的类似绝缘子单元,例如电力牵引线路的绝缘子。 2 本国际标准不包括绝缘子和端部金具尺寸的试验。 3 IEC 60120 涵盖球窝联轴器,IEC 60471 涵盖 U 形夹和舌片联轴器。 4 污染等级的定义,参见 IEC 60815。 5 本国际标准中使用的术语“陶瓷”是指陶瓷材料,与北美惯例相反,不包括眼镜。 [外文原描述]: Prescribes specified values for the electrical and mechanical characteristics and for the principal dimensions of string insulator units of the long rod type with insulating parts of ceramic material intended for a.c. overhead lines with a nominal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It is also applicable to insulators of similar design, used in substations. Applies also to string insulator units: -of the long rod type either with a clevis at both ends for coupling with a tongue, or with a socket at both ends for coupling with a pin ball -with external metal fittings -for use on overhead lines situated in slightly polluted areas, and the creepage distances given in Tables I and II have been established accordingly -and insulators of similar design, used in substations. This standard may be regarded as a provisional standard for insulators for d.c. overhead lines. Note -For general definitions and methods of tests see IEC 60383. -For dimensions of clevis and tongue couplings of string insulator units, see IEC 60471. -For dimensions of ball and socket couplings of string insulator units, see IEC 60120.
英文名称Insulators for overhead lines with a nominal voltage above 1 000 V - Ceramic insulators for a.c. systems - Characteristics of insulator units of the long rod type