SR HD 193 S2:2002

Voltage bands for electrical installations of buildings

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.

General information

Status : Withdrawn
Approval date : 11/27/2002
Publish date : 11/28/2002
Withdrawal date : 10/31/2018
Number of pages : 8
ICS : 29.020 Electrical engineering in general,91.140.50 Electricity supply systems
Technical Committee : 136 - Electrical installation in buildings

Relations with other standards: