KS C IEC 61643-31 2025-11-26 15:20:26 Field Electrical/Electronics (C) > Electrical and electronic general applied area This standard applies to surge protective devices (SPDs) to protect against surges from the direct or indirect effects of lightning or other transient overvoltages. The surge protective device is designed for connection to the DC side of solar power plants rated up to 1 500 V DC. This device contains at least one nonlinear element and is used to limit surge voltage and divert surge current. Performance characteristics, safety requirements, standard test methods and rated values are identified. SPDs that comply with this standard must be installed only on the DC side of solar generators and on the DC side of inverters. SPDs for PV systems equipped with energy storage devices (e.g. batteries, capacitor banks) were not addressed. SPD (referred to as a 2-port SPD according to IEC 61643-11:2011), which has separate input and output terminals and includes a specific series impedance between these terminals, was not covered. SPDs conforming to this standard are designed to be permanently connected and, therefore, such fixed SPDs can only be disconnected and disconnected using tools. This standard does not apply to portable SPDs. Remark 1 SPDs for PV facilities generally do not include a specific series impedance between input/output terminals in consideration of power efficiency. Remark 2 In this standard, when referring to an electric power system or power system, it refers to the DC side of solar power generation facilities. Standard name (English) Low-voltage surge protective devices — Part 31: Requirements and test methods for SPDs for photovoltaic installations International Standard Classification (ICS) code 29.240.01: Power supply chain general 29.240.10: Substation. surge prevention device Compliance with international standards IEC 61643-31:2018(IDT) ※ IDT: Match, MOD: Modify, NEQ: Not match Notification agency (notification number) National Agency for Technology and Standards (No. 2021-0387) Reason for notice Standardization according to international standards KS screening standards published date situation Screening criteria file reason There is no KS screening criteria information. number of pages 52 History information standard number standard name Announcement date situation Reason for notice note KS C IEC 61643-31 Low-voltage surge protective devices — Part 31: Requirements and test methods for SPDs for solar power plants 2021-09-28 Establishment (standard) Standardization according to international standards LIST 이전글KS C IEC 61643-312 (confirmed in 2021) Low-voltage surge protection device – Part 312: Guidelines for selecting and applying gas discharge pipes2025.11.26 다음글KS C IEC 61643-11 (confirmed in 2022) Low-voltage surge protective devices - Part 11: Low-voltage surge protective devices in low-voltage power systems - Requirements and test methods2025.11.26
