带电作业. 相位比较器. 第1部分: 用于超过1 kV交流电压的电容式

[中文适用范围]： IEC 61481 的本部分适用于交流电压超过 1 kV、频率为 50 Hz 和/或 60 Hz 的电气系统中使用的便携式电容式相位比较器。本标准适用于： 与存储系统一起工作的电容式单极相位比较器，最高可达 36 kV ac@ 与无线连接一起工作的电容式两极相位比较器，最高可达 245 kV ac 本标准适用于相位比较器用于与裸露导电部件接触进行比较的电容式：作为包括其绝缘元件的完整设备或作为单独的设备@适用于绝缘棒@作为单独的工具@不包括在本标准中。注：相位比较器的接触电极或绝缘元件等部分部件作为一个完整的装置可以拆卸。其使用的一些限制适用于工厂组装的开关设备和电气化铁路的架空系统（见附件 A）。设计用于提供相位比较以外的其他功能的设备是不同的设备，不属于本标准的范围。例如，设计为同时用作电压检测器的设备不属于本标准的范围（参见附录 A）。根据本标准设计和制造的产品，只要由经过工作培训的人员按照热棒工作方法和使用说明使用，就有助于用户的安全。除另有规定外，本标准中所定义的电压均指三相系统的相间电压。在其他系统中，应使用适用的相间或相对地（接地）电压来确定工作电压。 [外文原描述]： IEC 61481-1:2014 is applicable to portable phase comparators of capacitive type to be used on electrical systems for voltages exceeding 1 kV a.c. and frequencies of 50 Hz and/or 60 Hz. This standard is applicable to single-pole phase comparators of capacitive type operating with a memory system up to 36 kV a.c., and two-pole phase comparators of capacitive type operating with a wireless connection up to 245 kV a.c. This standard is applicable to phase comparators of capacitive type used in contact with the bare conductive parts to be compared as a complete device including its insulating element or as a separate device, adaptable to an insulating stick which, as a separate tool, is not covered by this standard. A device that is designed to provide other functions than phase comparison is a different device and is not covered by this standard. For example a device designed to be also used as a voltage detector is not covered by this standard. This first edition, together with the first edition of IEC 61481-2, cancels and replaces the first edition of IEC 61481 published in 2001, Amendment 1:2002 and Amendment 2:2004. This edition constitutes a technical revision including the following major changes: - split of the standard in two parts; - extension of the scope to include two-pole phase comparators operating with a wireless connection up to 245 kV a.c.; - review of the requirements for indication; - introduction of a requirement for a new marking "LU" for limited use; - and revision of existing annexes. The contents of the corrigendum of July 2015 have been included in this copy.