torna su
close Close

CEI membership discount

Dear customer,
our systems show that your name is connected to a company associated with CEI: you would therefore be entitled to thediscount reserved for our members for CEI products and services. To check the validity of the association and benefit from the discounts, it is necessary to enter the register number assigned to your company in the box below.

VALIDATE AND CONTINUE
You can continue shopping even without entering the membership register number, but you will not have access to dedicated discounts.

CONTINUE WITHOUT DISCOUNTS

The membership register number has been correctly entered.
From now on, after logging into your MyNorma account, you can purchase our products at the price reserved for our members.

doneCONTINUE PURCHASING
Replaced help_outline
mode_commenti add_alert notifications star_border star

CEI EN 60742

CEI Classification: 96-2

Trasformatori di isolamento e trasformatori di sicurezza - Prescrizioni
standard
CEI
CEI
Standard help_outline
Publication Date: 1995-07
Date Of Withdrawal (DOW): 2004-03
Language: EN-IT
Pages: 224
Issue Num.:  2607
Commitee: CEI-CT96
EU Directives Low voltage (LVD)
La presente Norma è la versione italiana della Norma Europea EN 60742, equivalente alla Pubblicazione IEC 742 più modifica 1 (1992). Si applica ai trasformatori di isolamento e ai trasformatori di sicurezza, associati o non, a raffreddamento ad aria, fissi o mobili, monofase o polifase, di tensione primaria nominale non superiore a 1000 V in corrente alternata di frequenza nominale non superiore a 500 Hz e di potenza nominale non superiore a:
- per i trasformatori di isolamento: 25 kVA se monofase - 40 kVA se polifase;
- per i trasformatori di sicurezza: 10 kVA se monofase - 16 kVA se polifase.
La tensione secondaria nominale e la tensione secondaria a vuoto non devono superare:
- per i trasformatori di isolamento: 1000 V in corrente alternata e 1000 Radice quadrata di 2 V in corrente continua non piatta;
- per i trasformatori di sicurezza: 50 V in corrente alternata, efficace e/o 120 V in corrente continua piatta fra conduttori o fra un conduttore qualunque e la terra.
Ha come scopo principale quello di fornire prescrizioni di sicurezza per i trasformatori di isolamento e per i trasformatori di sicurezza.
Annulla e sostituisce la Norma CEI 14-6 (1990) fasc. 1418.

Relations

Replaces: CEI EN 60742

See also

IEC 742:1983
EN 60742:1995
IEC 742/A1:1992

International Coding Standard (ICS)

29.180
Transformers. Reactors
* Instrument transformers, see 17.220.20

Annotation

PLEASE NOTE: links will be automatically recognized and made clickable when the annotation will be published

send
shopping_cart Starting from € 144.00

Standard Evolution

close

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.