用于将交流和直流电量转换为模拟或数字信号的电测量传感器

[中文适用范围]： 、基本功能、精度指标、环境适应性、安装与使用条件等方面。标准适用于工业、电力系统、自动化控制等领域中各类电测量传感器的制造、检验和应用。标准中还明确了传感器在不同工作条件下的性能要求，以及相关的测试程序和验证方法，为相关产品的设计、生产、测试和使用提供了统一的技术依据。 ***此介绍可能不准确，请注意参考原文。 [外文原描述]： IEC 60688:2021 applies to transducers with electrical inputs and outputs for making measurements of AC or DC electrical quantities. The output signal can be in the form of an analogue direct current, an analog direct voltage or in digital form. This document applies to measuring transducers used for converting electrical quantities such as – current, – voltage, – active power, – reactive power, – power factor, – phase angle, – frequency, – harmonics or total harmonic distortion, and – apparent power to an output signal. This document is not applicable for – instrument transformers that complies with IEC 61869 (all parts), – transmitters for use in industrial process application that complies with IEC 60770 (all parts), and – performance measuring and monitoring devices (PMD) that comply with IEC 61557 12:2018. Within the measuring range, the output signal is a function of the measurand. An auxiliary supply can be needed. This document applies a) if the nominal frequency of the input(s) lies between 0 Hz and 1 500 Hz, b) to the electrical measuring transducer if it is part of a system for the measurement of a non-electrical quantity, and if it otherwise falls within the scope of this document, and c) to transducers for use in a variety of applications such as telemetry and process control and in one of a number of defined environments. This document is intended: – to specify the terminology and definitions relating to transducers whose main application is in industry, – to unify the test methods used in evaluating transducer performance, and – to specify accuracy limits and output values for transducers. IEC 60688:2021 cancels and replaces the third edition published in 2012. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) updating normative references; b) additional requirements for specific transducers used for LV monitoring applications; c) creation of interface coding to ease selection by the end-user.