Bulgarian Institute for Standardization
Standards – always a step ahead
Phone: +359 2 8174 523, +359 2 8174 504
E-mail: info@bds-bg.org
1797 Sofia, 13 "Lachezar Stanchev" Str., "Izgrev" Complex
ID number: 175079183, VAT number: BG175079183
Main menu

БДС HD 60364-5-534:2016

Low-voltage electrical installations - Part 5-53: Selection and erection of electrical equipment - Isolation, switching and control - Clause 534: Devices for protection against transient overvoltages

Jul 18, 2016

General information

60.60     Jul 18, 2016

April 2025



Harmonization Document

29.130     91.140.50     29.130.01  




Language in which you want to receive the document


IEC 60364-5-53 deals with general requirements for isolation, switching and control and with the requirements for selection and erection of the devices provided to fulfil such functions.
Clause 534 contains provisions for the application of voltage limitation in order to obtain insulation coordination in the cases described in HD 60364-4-44, EN 60664-1, EN 62305-1, EN 62305-4 and CLC/TS 61643-12.
Clause 534 focuses mainly on the requirements for the selection and erection of SPDs for protection against transient overvoltages where required by IEC 60364-4-44:2007, Clause 443, the EN 62305 series, or as otherwise specified.
Clause 534 does not take into account:
- surge protective components which may be incorporated in the appliances connected to the installation;
- portable SPDs
NOTE Further information can be found in CLC/TS 61643-12.
Clause 534 applies to a.c. power circuits. As far as it is applicable, the requirements of this clause may be followed for d.c. power circuits.

Life cycle


БДС HD 60364-5-534:2008


БДС HD 60364-5-534:2016
60.60 Standard published
Jul 18, 2016


БДС HD 60364-5-53:2022

Related project

Adopted from HD 60364-5-534:2016

Adopted from IEC 60364-5-53:2001/AMD2:2015 ED3