标准摘要
[中文适用范围]： IEC 61643 的这一部分适用于浪涌保护装置 (SPD)@，旨在提供浪涌保护，防止闪电或其他瞬态过电压的间接和直接影响。这些设备设计用于连接到额定电压高达 1 500 V DC 的光伏装置的直流侧。这些器件包含至少一个非线性组件，旨在限制浪涌电压并转移浪涌电流。建立了性能特征@安全要求@测试和评级的标准方法。符合本标准的浪涌保护器专用于安装在光伏发电机直流侧和逆变器直流侧。具有储能功能的光伏系统的 SPD（例如电池@电容器组）不包括在内。具有独立输入和输出端子且在这些端子之间包含特定串联阻抗的 SPD（根据 IEC 61643-11:2011，所谓的两端口 SPD）不包括在内。符合该标准的 SPD 设计为永久连接，固定 SPD 的连接和断开只能使用工具来完成。本标准不适用于便携式 SPD。 注 1：一般来说，出于功率效率的考虑，光伏应用的 SPD 在输入/输出端子之间不包含特定的串联阻抗。注 2：本文件@中凡提及电力系统或电力系统，均指光伏装置的直流侧。 [外文原描述]： IEC 61643-31:2018 is applicable to Surge Protective Devices (SPDs), intended for surge protection against indirect and direct effects of lightning or other transient overvoltages. These devices are designed to be connected to the DC side of photovoltaic installations rated up to 1 500 V DC. These devices contain at least one non-linear component and are intended to limit surge voltages and divert surge currents. Performance characteristics, safety requirements, standard methods for testing and ratings are established. SPDs complying with this standard are exclusively dedicated to be installed on the DC side of photovoltaic generators and the DC side of inverters. SPDs for PV systems with energy storage (e.g. batteries, capacitor banks) are not covered. SPDs with separate input and output terminals that contain specific series impedance between these terminal(s) (so called two-port SPDs according to IEC 61643-11:2011) are not covered. SPDs compliant with this standard are designed to be permanently connected where connection and disconnection of fixed SPDs can only be done using a tool. This standard does not apply to portable SPDs. The contents of the corrigendum of June 2022 have been included in this copy.
英文名称Low-voltage surge protective devices - Part 31: Requirements and test methods for SPDs for photovoltaic installations