标准摘要
[中文适用范围]： 本部分IEC 61557规定了用于测量和监测电气分配系统内电量的电能计量和监测设备(PMD)的要求，以及可选的其他外部信号。这些要求还定义了PMD在额定电压不超过1000V交流或1500V直流的单相和三相交流或直流系统中的性能。这些设备可以是固定式或便携式，适用于室内和/或室外使用。根据本文件定义的PMD提供额外的安全信息，有助于验证安装并提高配电系统的性能。此外，本文件还规定了专用于电能计量和监测功能(PMF)的测量功能要求，这些功能可以嵌入到不归类为PMD且主要功能不是电能计量和监测的设备(EPMF)中。PMF和EPMF的附加要求在附录H中描述。本文件描述的PMD用于一般工业和商业应用。PMD可以与符合IEC 61869系列标准的仪器变压器或符合IEC 60688的变送器相关联。本文件不涉及功能安全和网络安全方面。 [外文原描述]： IEC 61557-12:2018+A1:2021 specifies requirements for power metering and monitoring devices (PMD) that measure and monitor the electrical quantities within electrical distribution systems, and optionally other external signals. These requirements also define the performance in single- and three-phase AC or DC systems having rated voltages up to 1 000 V AC or up to 1 500 V DC. These devices are fixed or portable. They are intended to be used indoors and/or outdoors. Power metering and monitoring devices (PMD), as defined in this document, give additional safety information, which aids the verification of the installation and enhances the performance of the distribution systems. The power metering and monitoring devices (PMD) for electrical parameters described in this document are used for general industrial and commercial applications. This document does not address functional safety and cyber security aspects. This document is not applicable for: - electricity metering equipment that complies with IEC 62053-21, IEC 62053-22, IEC 62053-23 and IEC 62053-24. Nevertheless, uncertainties defined in this document for active and reactive energy measurement are derived from those defined in IEC 62053 (all parts); - the measurement and monitoring of electrical parameters defined in IEC 61557-2 to IEC 61557-9 and IEC 61557-13 or in IEC 62020; - power quality instrument (PQI) according IEC 62586 (all parts); - devices covered by IEC 60051 (all parts) (direct acting analogue electrical measuring instrument). IEC 61557-12:2018 cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) PMD-A has been withdrawn due the fact these devices are now mainly covered by the IEC 62586 series of standards. b) Three categories of PMD have been created with a list of minimum required functions for each category. c) Added a new Annex A explaining the different applications linked to the relevant standards and devices, and another new Annex C about the power factor conventions. The contents of the corrigendum 1 (2022-09) have been included in this copy. The contents of the corrigendum 1 of Amendment 1 (2022-09) have been included in this copy.
英文名称Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 12: Power metering and monitoring devices (PMD)