I.S. EN 61439-4:2013現行
Low-voltage Switchgear and Controlgear Assemblies Part 4: Particular Requirements for Assemblies for Construction Sites (acs) (iec 61439-4:2012 (eqv))
出版：National Standards Authority of Ireland
專家解讀視頻
Describes the specific requirements of ACS as follows: - ASSEMBLIES for which the rated voltage does not exceed 1000 V in case of a.c. or 1500 V in case of d.c.; - ASSEMBLIES where the nominal primary voltage and the nominal secondary voltage of transformers incorporated in ACS are within the limits specified above; - ASSEMBLIES intended for use on construction sites, both indoors and outdoors, i.e. temporary places of work to which the public do not generally have access and where building construction, installation, repairs, alteration or demolition of property (buildings) or civil engineering (public works) or excavation or any other similar operations are carried out; - transportable (semi-fixed) or mobile ASSEMBLIES with enclosure.
