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
Current help_outline
mode_commenti add_alert notifications star_border star

CEI EN 61557-8/EC

CEI Classification: 85-28;EC1

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
standard
CEI
CEI
Standard
Corrigendum help_outline
Publication Date: 2016-09
ValidFrom: 2016-10
Language: EN-IT
Pages: 8
Issue Num.:  15100
Commitee: CEI-CT85/66
shopping_cart Starting from € 0.00
Il presente documento è un Errata Corrige alla Norma CEI EN 61557-8 che tratta dei 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.
Tutte le correzioni effettuate riguardano la versione in lingua francese e solo per i due paragrafi seguenti anche la versione in lingua inglese:
- Prescrizioni generali;
- Resistenza interna in c.c. Ri e impedenza interna Zi.

Relations

Correct: CEI EN 61557-8

See also

IEC 61557-8/COR1:2016
EN 61557-8/EC:2016

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

Annotation

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

send

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.