IEC指南115:2021 RLV包含官方IEC国际标准及其红线版本。红线版本仅提供英文版本，并为您提供了一种快速简便的方法来比较官方IEC标准与其前一版本之间的所有更改。 IEC指南115:2021介绍了将测量不确定度应用于电工行业合格评定活动的实用方法。它是专门为IECEE计划以及从事按照国家安全标准测试电气产品的测试实验室设计的。它描述了测量不确定度原则的应用，并为测量不确定度的计算提供了指导。 文中还给出了一些与产品合格评定试验的测量计算不确定度有关的例子。IEC指南115由IECEE测试实验室委员会（CTL）编制，旨在就ISO/IEC 17025的测量不确定度要求在IECEE CB方案内进行的电气安全测试的实际应用提供指导。IECEE CB计划是40多个国家和大约60个国家认证机构之间的一项多边国际协议，用于接受按照IEC标准测试的电气产品的测试报告。CTL的目的是，除其他任务外，定义与IEC标准有关的试验方法的共同理解，以及确保并持续改进成员实验室试验结果的可重复性和再现性。 本文件中概述的测量不确定度的实用方法已在IECEE计划中采用，并且在世界各地的测试实验室中广泛使用，这些实验室从事按照国家安全标准测试电气产品。

IEC GUIDE 115:2021 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC Guide 115:2021 presents a practical approach to the application of uncertainty of measurement to conformity assessment activities in the electrotechnical sector. It is specifically conceived for use in IECEE Schemes as well as by testing laboratories engaged in testing electrical products to national safety standards. It describes the application of uncertainty of measurement principles and provides guidance on making uncertainty of measurement calculations. It also gives some examples relating to uncertainty of measurement calculations for product conformity assessment testing. IEC Guide 115 has been prepared by the IECEE Committee of Testing Laboratories (CTL) to provide guidance on the practical application of the measurement uncertainty requirements of ISO/IEC 17025 to the electrical safety testing conducted within the IECEE CB Scheme. The IECEE CB Scheme is a multilateral, international agreement, among over 40 countries and some 60 national certification bodies, for the acceptance of test reports on electrical products tested to IEC standards.The aim of the CTL is, among other tasks, to define a common understanding of the test methodology with regard to the IEC standards as well as to ensure and continually improve the repeatability and reproducibility of test results among the member laboratories. The practical approach to measurement uncertainty outlined in this document has been adopted for use in the IECEE Schemes, and is also extensively used around the world by testing laboratories engaged in testing electrical products to national safety standards.