60305-1995
Isolateurs pour lignes aériennes de tension nominale supérieure à 1000 V - Eléments d'isolateurs en matière céramique ou en verre pour systèmes à courant alternatif - Caractéristiques des éléments d'isolateurs du type capot et tige (Edition 4.0)

Insulators for Overhead Lines with a Nominal Voltage Above 1 000 V - Ceramic or Glass Insulator Units for A.C. Systems - Characteristics of Insulator Units of the Cap and Pin Type (Edition 4.0)

非常抱歉，我们暂时无法提供预览，您可以试试： 免费下载 60305-1995 前三页，或者稍后再访问。

如果您需要购买此标准的全文，请联系： 。

注意： 点击下载后，生成下载文件时间比较长，请耐心等待......

标准号

60305-1995

发布日期

1995年12月01日

实施日期

1969年12月31日

废止日期

无

中国标准分类号

/

国际标准分类号

/

发布单位

IEC - International Electrotechnical Commission

引用标准

16

适用范围

This International Standard applies to string insulator units of the cap and pin type with insulating parts of ceramic material or glass@ intended for a.c. overhead lines with a normal voltage greater than 1 000 V and a frequency not greater than 100 Hz. It also applies to insulators of similar design used in substations.This standard applies to string insulator units of the cap and pin type either with ball and socket couplings or with clevis and tongue couplings.This standard applies to string insulator units for use on overhead lines in clean areas and polluted areas. For use in areas characterized by very heavy pollution levels and for other particular or extreme environmental conditions@ it may be necessary for certain dimensions to be changed and insulator units having different creepage distances@ spacing and forms may be preferred (for example@ flat profile@ hemispherical etc.). Insulators for use on d.c. systems may also need different dimensions. In any case@ it is recommended that the standardized mechanical characteristics of the present International Standard and coupling sizes are retained.The object of this standard is to prescribe specified values for the mechanical characteristics and for the main dimensions of string insulator units of the cap and pin type.The power frequency@ lightning impulse and puncture withstand voltages of string insulator units are not specified in this standard. IEC 383-1 gives the electrical characteristics which define string insulator units; their values shall be agreed between purchaser and manufacturer.Ball and socket couplings are covered by IEC 120@ clevis and tongue couplings by IEC 471.NOTE ?C For the definition of pollution levels see IEC 815.