: Checking wire routing, terminal tightness, labelling, and compliance with the approved drawings.
The specific product standard for "PSC-Assemblies" used in power distribution and conversion.
While Part 1 provides the rules, applies them directly to the heavy-duty power boards used in industrial, commercial, and infrastructure applications. Any main distribution board (MDB), sub-main distribution board (SMDB), or Motor Control Center (MCC) operating at a rated voltage up to 1000V AC or 1500V DC falls directly under Part 2. Critical Concepts Defined in Part 2: iec 614391 and 2 pdf
) : The maximum current the assembly can handle continuously without exceeding temperature rise limits. Rated Short-Time Withstand Current ( Icwcap I sub c w end-sub
This part of IEC 61439 defines the specific requirements for power switchgear and controlgear assemblies in detail. It applies to assemblies for which the rated voltage does not exceed 1000 V in case of a.c. or 1500 V in case of d.c.. Standard IEC 61439-2 covers a wide range of power assemblies, including fixed, removable, and withdrawable units such as distribution boards, control centers, and motor control centers. It covers assemblies designed by the manufacturer and those adapted by a user (an "assembly manufacturer") from a standard system。 : Checking wire routing, terminal tightness, labelling, and
Now, for the critical question: where can you get the authentic PDF of the standard? A search for "iec 614391 and 2 pdf" can lead to various sources. However, it is essential to exercise caution and obtain the document from official or authorized distributors to ensure you have the correct, up‑to‑date version and are not in violation of copyright laws. As of June 2026, the most recent base editions are from 2020; however, you should verify whether any amendments or corrigenda have been issued since. Here are the official channels:
At the heart of this series are two critical documents: (General rules) and IEC 61439-2 (Power switchgear and controlgear assemblies). Anyone involved in specifying, manufacturing, or maintaining electrical distribution systems must understand these two parts. It applies to assemblies for which the rated
The standard is periodically revised. As of early 2025, the most current versions are:
Critically, . It is a pure "general rules" document that must be read in conjunction with a specific product part (such as Part 2). Part 1 provides the common rules; the other parts apply the specific requirements for particular assembly types.
The Original Manufacturer must verify the design against 12 critical attributes divided into construction and performance requirements: Construction Requirements
: Assessing overall functional reliability under specified operating conditions. Summary of Routine Verification (Testing Every Panel)