The Institute for Standardization of Bosnia and Herzegovina, through its Technical Committee BAS/TC 52, Switchgear and Controlgear Assemblies, has translated the third edition of BAS EN IEC 61439-5:2024, Low-voltage switchgear and controlgear assemblies – Part 5: Assemblies for power distribution in public networks, which was previously adopted by the endorsement method as the EN IEC 61439-5:2023 in English.

BAS EN IEC 61439-5:2024, which is part of IEC 61439 series, defines the specific requirements for public electricity network distribution assemblies (PENDAs).

PENDA have the following criteria:

-        used for the distribution of electrical energy in three phase systems for which the rated voltage does not exceede 1 000 V AC and DC systems not exceeding 1 500 V DC;

-        stationary;

-        open-type assemblies are not covered by this document;

-        suitable for installation in places where only skilled persons have access for their use, however, outdoor types assemblies can be installed in situations that are accessible to ordinary persons:

-        intended for use in energy distribution in public power grids;

-        indoor use: assemblies for installation inside of electric power substations;

-        outdoor use: assemblies containing an enclosure suitable for opern air installation.

The object of this document is to state the definitions and to specify the service conditions, construction requirements, technical characteristics and tests for PENDAs. Tests at higher performance level can be applicable with some network parameters.

PENDAs can also include control and/or signalling devices associated with the distribution of electrical energy.

This document applies to all PENDAs, whether they are designed, manufactured on a one-off basis or fully standardized and manufactured in quantity.

This document does not apply to individual devices and self-contained components, such as motor starters, fuse switches, electronic equipment, etc., which comply with the relevant product standards.

If the substation is owned or operated by a public distribution system operator (DSO), PENDAs which are used as LV distribution panels in transformer substations are within the scope of this document.

This document does not apply to specific types of assemblies covered by other parts of IEC 61439 series.

The original text of the standard was prepared by the International Technical Committee IEC/TC 121, Switchgear and controlgear assemblies for low voltage.