AENOR - UNE-EN 61643-21/A1
Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
active
| Organization: | AENOR |
| Publication Date: | 18 November 2009 |
| Status: | active |
| Page Count: | 26 |
| ICS Code (Substations. Surge arresters): | 29.240.10 |
Document History
May 22, 2013
Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
A description is not available for this item.
UNE-EN 61643-21/A1
November 18, 2009
Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
A description is not available for this item.
October 28, 2002
Low voltage surge protective devices -- Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods.
A description is not available for this item.