AS 3439.4:2009 pdf free
AS 3439.4:2009 pdf free.Low-voltage switchgear and controlgear assemblies
Each ACS shall be provided with one or more plates marked in a durable manner and located in a place such that they are visible and legible when the ASSEMBLY is installed. Information from a) to g) below shall be given on the nameplate. However, if the indication of the name or trademark of the manufacturer appears on the ACS it need not be given on the nameplate.Information from h) to s) may, where applicable, be given on the nameplates, in the relevant documents，on the circuit diagrams or in the manufacturer’s catalogues. However, if the weight of a unit exceeds 30 kg the weight shall be indicated on the nameplate.
The ACS shall be constructed to withstand mechanical shocks having an acceleration of 500 m/s2, a pulse shape of a half-sine wave of 11 ms duration (commensurate with equipment being carried loose in normal road or rail vehicles for long periods). The ACS shall also withstand impacts of 6 J energy representing collisions with site construction mechanical handling equipment (see IEC 60068-2-27).
The degree of protection provided by an ACS against contact with live parts, ingress of solid foreign bodies and liquid is indicated by the designation IP… according to IEC 60529.The degree of protection of all parts of the ACS shall be at least IP44, with all doors closed and all removable panels and cover plates fitted.
NOTE In Spain wiring rules (RD 842/2002) require a minimum degree of protection of IP45 for enclosures,switchgear and controlgear, socket-outlets and other installation elements intended for outdoor construction sites.
The degree of protection for an operating face inside a door shall be not less than IP21 provided that the door can be closed under all conditions of use. Where the door cannot be closed the degree of protection for the operating face shall be at least IP44.AS 3439.4 pdf free download.
