International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference HD 193 S2:1982
Title Voltage bands for electrical installations of buildings
Project Number 2286
Abstract/Scope Applies to a.c. electrical installations of buildings supplied at a frequency not exceeding 60 Hz and at a nominal voltage up to and including 1 000 V. Defines two voltage bands: Band I covers the installations where protection against shock is provided under certain conditions by the value of voltage and the installations where the voltage is limited for operational reasons (e.g. telecommunications, signalling, bell, control and alarm installation). Band II contains the voltage for supplies to household, commercial and industrial installations. This band contains all the voltage of public distribution systems in the various countries. A basic safety publication in accordance with IEC Guide 104. Note -The voltage bands defined are intended mainly for use in connection with installation rules (see IEC 60364 series), but may also be used when preparing requirements for electrical equipment.


Current Stage code 6060
Current Stage code date 1982-05-13
Current Stage code deadline 1982-11-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/TC 64
Reference Document IEC 60449:1973 (EQV) + A1:1979 (EQV)
Keywords Building; Electrical installation; Voltage band
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 1982-05-13 1982-11-01 export to doc file  EN

Implementation Dates

date of Ratification (DOR) (1) 1980-09-19
date of Availability (DAV) (2) 1982-05-13
date of Announcement (DOA) (3) 1982-04-01
date of Publication (DOP) (4) 1982-10-01
date of Withdrawal (DOW) (5) dor + 36 months


Supersedes HD_NO 1:1968
Superseded by  
Normative reference (6)  

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.