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CEI 37-11

CEI Classification: 37-11

Limitatori di sovratensioni di bassa tensione
Parte 12: Limitatori di sovratensioni connessi a sistemi di bassa tensione - Scelta e principi di applicazione
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Publication Date: 2014-11
ValidFrom: 2010-12
Language: IT
Pages: 84
Issue Num.:  13858
Commitee: CEI-CT37
La presente Guida Tecnica descrive i principi per la scelta, il funzionamento, l'ubicazione ed il coordinamento degli SPD collegati ai circuiti da 50 Hz a 60 Hz in c.a. ed ad apparecchiature a tensione nominale fino a 1 000 V in c.a efficaci.
I limitatori di sovratensioni (SPD) sono impiegati per proteggere, in determinate condizioni, i sistemi e le apparecchiature elettriche contro le diverse sovratensioni e correnti impulsive, come i fulmini e le sovratensioni di manovra.
Gli SPD devono essere scelti tenendo conto delle condizioni ambientali di utilizzazione e del tasso di guasto accettabile delle apparecchiature e degli SPD.
Questa Guida sostituisce la Specifica CEI CLC/TS 61643-12:2010-11.
La presente Guida viene utilizzata congiuntamente alla Norma CEI EN 61643-11:2004.
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Replaces: CEI CLC/TS 61643-12

International Coding Standard (ICS)

29.240.10
Substations. Surge arresters
29.240
Power transmission and distribution networks
* Electricity supply systems 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.

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

You can identify the ICS code of your interest by typing the code or a keywordword in the dropdown ICS field, and by selecting one of the filtered results.

Search also in the summary/description of the standard

By flagging this control, the search for keywords will not be limited to the Standard Number and Title fields, but will also be performed in the Abstract of the standard.

This way, you will get more results.

You should use this option when you can not find the desired result with the standard approach and it is necessary to extend the scope of the search: by increasing the number of results, you will increase the number of non-relevant elements, as well.