IEC 61643-21 AMD 1*CEI 61643-21 AMD 1

Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods; Amendment 1

2008-04-00

Có hiệu lực

DIN EN 61643-21 (2010-03), MOD * DIN EN 61643-21 (2013-07), MOD * DIN EN 61643-21/A1 (2008-10), MOD * BS EN 61643-21+A2 (2001-08-31), MOD * EN 61643-21/A1 (2009-04), MOD * EN 61643-21/FprA1 (2008-05), IDT * EN 61643-21/FprA1 (2008-07), MOD * NF C61-744-21/A1 (2009-06-01), MOD * C61-744-21/A1PR, MOD * OEVE/OENORM EN 61643-21 (2010-05-01), NEQ * OEVE/OENORM EN 61643-21 (2013-08-01), IDT * OEVE/OENORM EN 61643-21/A1 (2008-07-01), IDT * OEVE/OENORM EN 61643-21/A1 (2008-10-01), NEQ * PN-EN 61643-21/A1 (2009-05-27), MOD * SS-EN 61643-21 A 1 (2009-10-26), IDT * UNE-EN 61643-21/A1 (2009-11-18), MOD * CSN EN 61643-21 (2002-03-01), NEQ * DS/EN 61643-21/A1 (2009-06-26), MOD * NEN-EN-IEC 61643-21:2001/A1:2009 en (2009-05-01), MOD

IEC 61643-21*CEI 61643-21 (2000-09)

IEC 37A/200/FDIS (2008-02)

IEC 61643-21 AMD 1*CEI 61643-21 AMD 1 (2008-04) * IEC 37A/200/FDIS (2008-02) * IEC 37A/193/CDV (2006-12)

Circuit networks * Definitions * Electrical engineering * Electrical safety * Low-voltage circuit * Low-voltage equipment * Mission * Overvoltage protection * Performance * Protection against electric shocks * Signal processing * Specification (approval) * Surge arresters * Telecommunications * Testing * Inserts * Use

29.120.50. Cầu chảy và các thiết bị bảo vệ quá tải
29.240.10. Trạm. Bộ phóng điện bảo vệ quá áp

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