This part of IEC 61439 defines the specific requirements for the power switchgear and controlgear assembly (abbreviated ‘PSC-assembly’ throughout this document see 3.1.101) as follows:
assemblies for which the rated voltage does not exceed 1000VACor1500VDC;
assemblies designed for a nominal frequency of the incoming supply or supplies not exceeding 1000 Hz;
NOTE 1 Frequencies above 1 kHz are considered as high frequencies， see also IEC 60664-1:2007,5.3.3.2.5 to take into account additional constraints to insulation coordination.
assemblies intended for indoor and outdoor applications;
stationary or movable assemblies with or without enclosures;
assemblies intended for use in connection with the generation， transmission， distribution and conversion of electrical energy, and for the control of equipment consuming electrical energy and for associated data processing;
assemblies designed for use under special service conditions, for example in ships and in rail vehicles, provided that the other relevant specific requirements are complied with;
This document also applies to assemblies for use in photovoltaic installations, designated as photovoltaic assemblies (PVA). The particular characteristics, specific service conditions and the requirements for PVA’s are included in Annexes DD, EE and FF.
This document provides supplementary requirements for PSC-assemblies intended for use as part of the electrical equipment of machines and can be applied in addition to the requirements given in IEC 60204-1.
This document applies to all assemblies whether they are designed, manufactured and verified on a one-off basis or fully standardised and manufactured in quantity.
The manufacture and/or assembly can be carried out by an entity other than the original manufacturer (see 3.10.1 of IEC 61439-1:2020).
