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Re : Standard for general rules for low voltage switchgear assemblies and requirements for LV Panel with PLC / DCS

Hi there,

I am normally read about IEC 61439 and IEC 60947 in LV panel/cabinet/switchgear design and assembly. My confusion is do we apply another standard as well for the cabinet that assembled with PLC/DCS in the cabinet? This automation panel is used for building control systems for heating and cooling systems. Need some knowledge and experience from experts. Thanks in advance.

Cheers

Eddy K

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0 Former Community Member over 3 years ago

Hello Eddy,
Generally speaking, air handling units would fall under the MD/US SMSR, so the harmonised/designated standard would be EN 60204-1.
The 61439 series are not harmonised to the MD, only the LVD/UK EESR.
So for building controls I would expect 60204-1, MD / UL SMSR, & EMC / EMF compliance on the Declaration not LVD.
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0 Former Community Member over 3 years ago

Hello Eddy,
Generally speaking, air handling units would fall under the MD/US SMSR, so the harmonised/designated standard would be EN 60204-1.
The 61439 series are not harmonised to the MD, only the LVD/UK EESR.
So for building controls I would expect 60204-1, MD / UL SMSR, & EMC / EMF compliance on the Declaration not LVD.
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Re : Standard for general rules for low voltage switchgear assemblies and requirements for LV Panel with PLC / DCS

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