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CEI EN 60521

CEI Classification: 13-17

Contatori elettrici a induzione di energia attiva per corrente alternata (classe 0,5 1 e 2)
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Publication Date: 1995-11
Date Of Withdrawal (DOW): 1998-02
Language: EN-IT
Pages: 60
Issue Num.:  2679
Commitee: CEI-CT13
La presente Norma è la versione italiana della Norma Europea CENELEC EN 60521, identica alla Pubblicazione IEC 521 (1988). Su concessione CLC/BT (BxI/SG)631 (Dicembre 94), i contatori costruiti prima del 15/7/1995 possono essere revisionati e reinstallati facendo riferimento alla precedente normativa HD 309.1 (Norma CEI 13-13 Ia ed.). Si applica unicamente ai contatori elettrici a induzione nuovi di fabbrica di classe di precisione 0,5 1 e 2 destinati alla misura dell’energia elettrica attiva in corrente alternata nel campo di frequenze compreso tra 45 e 65 Hz e si applica unicamente alle loro prove di tipo. Si applica inoltre, agli assiemi di contatori e dei loro accessori, compresi i trasformatori di corrente quando sono racchiusi nella custodia del contatore stesso. Non si applica: agli indicatori di massima potenza (vedi Pubblicazione IEC 211, Norma CEI 13-8, fasc. 358); a nessun tipo di dispositivo di misura come quelli utilizzati in telemisura; ai contatori campioni o a speciali tipi di contatori di energia attiva (per es. contatori di eccedenza) con l’eccezione dei contatori a tariffa multipla; ai contatori la cui tensione ai morsetti di connessione supera i 600 V (tensione tra le fasi per contatori polifase).

Relations

Replaces: CEI 13-17;Ec
Replaces: CEI 13-17

See also

EN 60521
IEC 521 (1988)

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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.

Level 1 covers the main fields of activity in standardization, e.g. road vehicle engineering, agriculture, metallurgy.

Each field has a two-digit notation, e.g.

  43    Road Vehicle Engineering

The main fields are subdivided into groups (level 2). The notation of a group consists of the field notation and a three-digit group number, separated by a point, e.g.

  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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