KS C IEC 61643-21 Low-voltage surge protective devices — Part 21: Surge protective devices connected to telecommunication and signaling networks — Performance requirements and test methods 2025-11-26 15:12:13 Field Electrical/Electronics (C) > electrical machinery applied area This standard applies to surge protective devices for the protection of telecommunication networks against direct or indirect lightning or other transient overvoltages. These surge protective devices (SPDs) have an operating voltage range of up to 1 000 V (rms) alternating current, direct current. It is intended to protect telecommunication networks up to 1 500 V. Standard name (English) Low voltage surge protective devices — Part 21: Surge protective devices connected to telecommunications and signaling networks — Performance requirements and testing methods International Standard Classification (ICS) code 29.240.10: Substation. surge prevention device Compliance with international standards IEC 61643-21:2012(IDT) ※ IDT: Match, MOD: Modify, NEQ: Not match Notification agency (notification number) (No. 2015-0326) Reason for notice Other amendments to conform to international standards KS screening standards published date situation Screening criteria file reason There is no KS screening criteria information. Number of pages 61 History information standard number standard name Announcement date situation Reason for notice note KS C IEC 61643-21 (confirmed 2020) Low-voltage surge protective devices — Part 21: Surge protective devices connected to telecommunication and signaling networks — Performance requirements and test methods 2020-06-25 OK (Standard) 5-year confirmation standard KS C IEC 61643-21 Low-voltage surge protective devices — Part 21: Surge protective devices connected to telecommunication and signaling networks — Performance requirements and test methods 2015-07-28 Revised (old version) Other amendments to conform to international standards KS C IEC 61643-21 (confirmed 2012) Low-voltage surge protective devices - Part 21: Surge protective devices for communication and signal network connections - Performance requirements and test methods 2012-11-05 Confirm (old version) KS C IEC 61643-21 Low-voltage surge protective devices - Part 21: Surge protective devices for communication and signal network connections - Performance requirements and test methods 2007-11-30 Revised (old version) KS C IEC 61643-21 Low-voltage surge protective devices Part 21: Surge protective devices connected to communication and signal networks - Performance requirements and test methods 2005-12-06 Enacted (old version) LIST 이전글KS C IEC 61643-12 Low-voltage surge protective devices — Part 12: Surge protective devices for protection of low-voltage power systems — Guidelines for selection and application2025.11.26
Field Electrical/Electronics (C) > electrical machinery applied area This standard applies to surge protective devices for the protection of telecommunication networks against direct or indirect lightning or other transient overvoltages. These surge protective devices (SPDs) have an operating voltage range of up to 1 000 V (rms) alternating current, direct current. It is intended to protect telecommunication networks up to 1 500 V. Standard name (English) Low voltage surge protective devices — Part 21: Surge protective devices connected to telecommunications and signaling networks — Performance requirements and testing methods International Standard Classification (ICS) code 29.240.10: Substation. surge prevention device Compliance with international standards IEC 61643-21:2012(IDT) ※ IDT: Match, MOD: Modify, NEQ: Not match Notification agency (notification number) (No. 2015-0326) Reason for notice Other amendments to conform to international standards KS screening standards published date situation Screening criteria file reason There is no KS screening criteria information. Number of pages 61 History information standard number standard name Announcement date situation Reason for notice note KS C IEC 61643-21 (confirmed 2020) Low-voltage surge protective devices — Part 21: Surge protective devices connected to telecommunication and signaling networks — Performance requirements and test methods 2020-06-25 OK (Standard) 5-year confirmation standard KS C IEC 61643-21 Low-voltage surge protective devices — Part 21: Surge protective devices connected to telecommunication and signaling networks — Performance requirements and test methods 2015-07-28 Revised (old version) Other amendments to conform to international standards KS C IEC 61643-21 (confirmed 2012) Low-voltage surge protective devices - Part 21: Surge protective devices for communication and signal network connections - Performance requirements and test methods 2012-11-05 Confirm (old version) KS C IEC 61643-21 Low-voltage surge protective devices - Part 21: Surge protective devices for communication and signal network connections - Performance requirements and test methods 2007-11-30 Revised (old version) KS C IEC 61643-21 Low-voltage surge protective devices Part 21: Surge protective devices connected to communication and signal networks - Performance requirements and test methods 2005-12-06 Enacted (old version)
