电能计量设备（交流） 特殊要求- 第23部分 静态无功电能表（2类和3类）

[中文适用范围]： 本部分的 IEC 62053 仅适用于交流 50 Hz 或 60 Hz 电网中测量无功电能的精度等级为 2 和 3 的静态无功电能表，且仅适用于其型式试验。出于实际原因，本文件基于正弦电流和电压（仅含基波频率）的无功电能的传统定义。本文件适用于设计用于以下用途的电力计量设备：在电压高达 1000 V 的电网（ mains ）上测量和控制电能；所有功能元件（包括附加模块）均封闭在或构成单个电表外壳内，指示显示屏除外；可与集成式、分离式指示显示屏配合使用，或无指示显示屏；安装在指定的配套插座或机架上；可选择提供除电能测量之外的其他功能。设计用于与低功率仪器变压器（LPIT，定义见 IEC 61869 系列）配合使用的电表，仅当该电表及其 LPIT 一起测试并满足直接连接电表的要求时，才被视为符合本文件。本文件不适用于：线电压（相电压）超过 1000 V 的电表；与低功率仪器变压器（LPIT）连接但未经该变压器测试的电表；由多个设备（LPIT 除外）物理隔离组成的计量系统；便携式电表；用于轨道车辆、汽车、船舶和飞机的电表；实验室和电表测试设备；标准参考电表；电表记录器的数据接口；用于安装电力计量设备的配套插座或机架；电能电表提供的任何附加功能。 [外文原描述]： IEC 62053-23:2020 applies only to static var-hour meters of accuracy classes 2 and 3 for the measurement of alternating current electrical reactive energy in 50 Hz or 60 Hz networks and it applies to their type tests only. For practical reasons, this document is based on a conventional definition of reactive energy for sinusoidal currents and voltages containing the fundamental frequency only. This document applies to electricity metering equipment designed to: • measure and control electrical energy on electrical networks (mains) with voltage up to 1 000 V AC; • have all functional elements, including add-on modules, enclosed in, or forming a single meter case with exception of indicating displays; • operate with integrated or detached indicating displays, or without an indicating display; • be installed in a specified matching socket or rack; • optionally, provide additional functions other than those for measurement of electrical energy. Meters designed for operation with low power instrument transformers (LPITs as defined in the IEC 61869 series) may be considered as compliant with this document only if such meters and their LPITs are tested together and meet the requirements for directly connected meters. This document does not apply to: • meters for which the voltage line-to-neutral derived from nominal voltages exceeds 1 000 V AC; • meters intended for connection with low power instrument transformers (LPITs as defined in the IEC 61869 series) when tested without such transformers; • metering systems comprising multiple devices (except LPITs) physically remote from one another; • portable meters; • meters used in rolling stock, vehicles, ships and airplanes; • laboratory and meter test equipment; • reference standard meters; • data interfaces to the register of the meter; • matching sockets or racks used for installation of electricity metering equipment; • any additional functions provided in electrical energy meters. This document does not cover measures for the detection and prevention of fraudulent attempts to compromise a meter’s performance (tampering). This second edition cancels and replaces the first edition published in 2003 and its amendment 1:2016. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Removed all meter safety requirements; the meter safety requirements are covered in IEC 62052-31:2015. b) Replaced Ib with In; Ib is no longer used when referencing directly connected meters. c) Moved the descriptions of all general requirements and test methods from IEC 62053-21: 2003, IEC 62053-22: 2003, IEC 62053-23: 2003, IEC 62053-24: 2003 to IEC 62052-11:2020; IEC 62053-21:2020, IEC 62053-22:2020, IEC 62053-23:2020, IEC 62053-24:2020 contain only accuracy class specific requirements. d) Added new requirements and tests concerning: 1) measurement uncertainty and repeatability (7.3, 7.8); 2) influence of fast load current variations (9.4.12); 3) immunity to conducted differential current disturbances in the 2 kHz to 150 kHz frequency range (9.3.8). e) Meters designed for operation with low power instrument transformers (LPITs) may be tested for compliance with this document as directly connected meters. The reactive energy accuracy classes 2 and 3 defined in IEC 62053-23 have also been added to IEC 62053-24. The TC13 WG11 is of the opinion that the testing methodology described in IEC 62053-24 is a better approach to testing of modern reactive energy meters. Consequently, IEC 62053-23 will be withdrawn in the near future, and should not be used for new meter designs.