KS IEC 61439-4:2023

Low-voltage switchgear and controlgear assemblies-Part 4:Particular requirements for assemblies for construction sites (ACS).

Defines the specific requirements of ACS as follows: ASSEMBLIES for which the rated voltage does not exceed 1 000 V in case of a.c. or 1 500 V in case of d.c.; ASSEMBLIES where the nominal primary voltage and the nominal secondary voltage of tr