Applies to assemblies intended for use in connection with the generation, transmission, distribution, and conversion of electric energy.
Achieving compliance involves a multi-step workflow split between the original design phase and the final production line.
Preserving minimum insulation air gaps to prevent electrical arcing.
The shift to 61439 introduced several "interesting" technical and philosophical shifts for electrical engineers: IEC 61439-1:2020 iec 614391 and 2 pdf
: The organization that carries out the original design and performs initial design verifications (e.g., Schneider Electric, Siemens, ABB).
Navigating IEC 61439-1 and 61439-2: The Global Standards for Low-Voltage Switchgear
Resistance to corrosion and mechanical impact (IK ratings). Applies to assemblies intended for use in connection
IEC 61439-2 specifically applies to . These are assemblies used to distribute and control electrical energy in commercial, industrial, and high-demand environments. Scope of Part 2:
While Part 1 provides the general rules, provides the specific requirements for the most common type of low-voltage assembly: the Power Switchgear and Controlgear Assembly (PSC-assembly). This is the product standard that defines the design, construction, and performance of main distribution boards and motor control centers.
Comparing a new design to a previously tested "reference design." These are assemblies used to distribute and control
. For decades, it had tried to keep low-voltage switchboards safe, but it was often confusing. It used riddles like "Type Tested" (TTA) and "Partially Type Tested" (PTTA), which left many panel builders scratching their heads.
As cities grew and energy demands soared, the old standard simply couldn't keep up. In July 2020, a new hero emerged: the IEC 61439 series The Two Pillars of Power
IEC 61439-2 covers aspects such as: