| 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 |
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| Compliance with international standards |
IEC 61643-21:2012(IDT) ※ IDT: Match, MOD: Modify, NEQ: Not match |
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| Notification agency (notification number) | (No. 2015-0326) | ||||||||
| Reason for notice | Other amendments to conform to international standards | ||||||||
| KS screening standards |
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| 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) |