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ČSN EN 61643-21:2002/A2 (341392)
Ochrany před přepětím nízkého napětí - Část 21: Ochrany před přepětím zapojené v telekomunikačních a signalizačních sítích - Požadavky na funkci a zkušební metody.
Automatically translated name:
Lightning protection , low voltage - Part 21 : Overvoltage protection involved in telecommunications and signaling networks - Requirements for functionality and test methods.
STANDARD published on 1.5.2013
The information about the standard:
Designation standards: ČSN EN 61643-21:2002/A2
Classification mark: 341392
Catalog number: 92768
Note: Change
Publication date standards: 1.5.2013
SKU: NS-160791
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Czech technical standard
Category: Technical standards ČSN
The category - similar standards:
Power transmission and distribution networksSubstations. Surge arresters
This change (correction) applies to this standard:
ČSN EN 61643-21 (341392)
Show all technical information.
Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Performance requirements and testing methods
Standard published on 1.3.2002
Selected format: Czech - Print design (22.60 USD)
Show all technical information.
