
Low-voltage surge protective devices Part 22: Surge protective devices connected to telecommunications and signalling networks - Selection and application principles
出版:International Electrotechnical Committee

专家解读视频
Describes the principles for the selection, operation, location and coordination of SPDs connected to telecommunication and signalling networks with nominal system voltages up to 1 000 V r.m.s. a.c. and 1 500 V d.c. Also addresses SPDs that incorporate protection for signalling lines and power lines in the same enclosure.
CLC/TS 61643-22:2006 - Identical
CEI CLC/TS 61643-22 Ed. 1 (2007) - Identical
DD CLC/TS 61643-22:2006 - Identical
DIN CLC/TS 61643-22 (2007-09) - Identical
JIS C 5381-22:2007 - Identical
I.S. CLC TS 61643-22:2006 - Identical
VDE V 0845-3-2:2007 - Identical
NF EN 61643-22:2003 - Identical
NEN NPR IEC CLC/TS 61643-22:2007 - Identical