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IEC 60449-ed.1.0
Voltage bands for electrical installations of buildings
STANDARD published on 1.1.1973
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The information about the standard:
Designation standards: IEC 60449-ed.1.0
Publication date standards: 1.1.1973
SKU: NS-410257
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: International technical standard
The category - similar standards:
Annotation of standard text IEC 60449-ed.1.0 :
Applies to a.c. electrical installations of buildings supplied at a frequency not exceeding 60 Hz and at a nominal voltage up to and including 1 000 V. Defines two voltage bands: Band I covers the installations where protection against shock is provided under certain conditions by the value of voltage and the installations where the voltage is limited for operational reasons (e.g. telecommunications, signalling, bell, control and alarm installation). Band II contains the voltage for supplies to household, commercial and industrial installations. This band contains all the voltage of public distribution systems in the various countries. Note: The voltage bands defined are intended mainly for use in connection with installation rules (see IEC 60364), but may also be used when preparing requirements for electrical equipment. Sapplique aux installations electriques en courant alternatif des batiments, alimentees sous une frequence ne depassant pas 60 Hz et sous une tension nominale inferieure ou egale a 1 000 V. Definit deux domaines de tension. Le domaine I comprend: - les installations ou la protection contre les chocs electriques est assuree dans certaines conditions par la valeur de la tension. - les installations ou la tension est limitee pour des raisons fonctionnelles (par exemple installations de telecommunications, de signalisation, de sonneries, de commande et dalarme). Le domaine Il comprend les tensions dalimentation des installations domestiques, commerciales et industrielles. Ce domaine comprend lensemble des tensions des reseaux de distribution publique utilisees dans les differents pays. Note: Les domaines de tension definis sont principalement destines a etre utilises en liaison avec les regles dinstallation (voir la CEI 60364) mais peuvent aussi etre utilises lors de letablissement de prescriptions relatives aux materiels electriques.
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