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CEI EN 61557-8

CEI Classification: 85-28

Sicurezza elettrica nei sistemi di distribuzione a bassa tensione fino a 1 000 V c.a. e 1 500 V c.c. - Apparecchi per prove, misure o controllo dei sistemi di protezione
Parte 8: Dispositivi di controllo dell'isolamento nei sistemi IT
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Publication Date: 2016-04
ValidFrom: 2015-07
Language: EN-IT
Pages: 96
Issue Num.:  14849
Commitee: CEI-CT85/66
EU Directives Low voltage (LVD)
La presente Norma specifica le prescrizioni per i dispositivi di controllo dell'isolamento che, indipendentemente dal metodo di misura, controllano in modo continuo la resistenza di isolamento verso terra dei seguenti sistemi IT:
- sistemi c.a. non messi a terra;
- sistemi c.a. con circuiti c.c. galvanicamente collegati e tensioni fino a 1 000 V c.a.;
- sistemi c.c. non messi a terra con tensioni fino a 1 500 V c.c.
La presente Norma deve essere letta congiuntamente alla EN 61557-1, che fornisce le prescrizioni generali.
Rispetto alla precedente edizione di cui costituisce revisione tecnica sono state introdotte, tra le altre, le seguenti modifiche principali:
- aggiornato l'articolo "Termini e definizioni";
- riviste le prescrizioni;
- funzionalità obbligatorie e opzionali sono state adattate dalla IEC 61557-15;
- introdotte prescrizioni meccaniche;
- aggiunte informazioni riguardanti le istruzioni operative;
- aggiornate le prove di tipo e quelle individuali;
- aggiunto l'Allegato C per gli impianti fotovoltaici;
- aggiunto l'Allegato D per gli inverter fotovoltaici o per i controllori di carica.
La Norma in oggetto sostituisce completamente la Norma CEI EN 61557-8:2008-08, che rimane applicabile fino al 15-01-2018.
La presente Norma riporta il testo in inglese e italiano della EN 61557-8; rispetto al precedente fascicolo n. 14190E di giugno 2015, essa contiene la traduzione completa della EN sopra indicata.

Relations

Replaces: CEI EN 61557-8

See also

EN 61557-8:2015
IEC 61557-8:2014

International Coding Standard (ICS)

29.240.01
Power transmission and distribution networks in general
* Powerline telecommunications, see 33.040.60
29.080.01
Electrical insulation in general
17.220.20
Measurement of electrical and magnetic quantities
* Including measuring instruments, instrument transformers
* Electric energy meters in buildings, see 91.140.50

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ICS

International Classification for Standards (ICS) is an international classification system for technical standards.

The ICS is a hierarchical classification organized on three levels.

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  43    Road Vehicle Engineering

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  43.040    Road vehicle systems

Some groups are further divided into sub-groups (level 3). The notation of a sub-group consists of the group notation and a two-digit number, separated by a point, e.g.

  43.040.20 Lighting, signaling and warning devices

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