Ensuring the panel does not overheat under full rated current conditions.
Mechanical operation checks of breakers, locks, and interlocks. Dielectric test (voltage insulation test).
The document also provides supplementary requirements for PSC‑assemblies intended for use as part of the electrical equipment of machinery. For example, EN IEC 61439‑2:2021/FprAA:2025 is a draft amendment that revises the European version to meet the essential requirements of the EMC Directive 2014/30/EU regarding electromagnetic compatibility. iec 614391 and 2 pdf
Provide comprehensive instructions for assembly, installation, and maintenance.
The standard describes verification of temperature‑rise for assemblies. This can be carried out by testing, but under defined boundary conditions, alternatives such as calculation (based on IEC TR 60890) are also permitted. For the verification of dielectric properties, the standard requires impulse voltage withstand verification, which is mandatory either by test or by design rules. The test is not required when clearances in the assembly are 1.5 times the specified value. Ensuring the panel does not overheat under full
IEC 61439-1 defines the definitions, operating conditions, construction requirements, technical characteristics, and verification methods common to all low-voltage electrical panels. Key Focus Areas of Part 1:
When analyzing an IEC 61439-1 and -2 PDF document, engineers must focus on several core performance criteria that govern the safety and integrity of the switchboard: Temperature Rise Limits clearer rules for compliance.
This feature provides manufacturers with flexibility. Instead of requiring expensive destructive testing for every minor configuration change, they can use engineering data and proven comparisons to certify new designs, making the process more cost-effective while maintaining safety.
The international standards and IEC 61439-2 define the safety, performance, and verification requirements for low-voltage switchgear and controlgear assemblies. These documents replaced the older IEC 60439 standard to establish stricter, clearer rules for compliance. Navigating these standards is essential for electrical engineers, panel builders, and plant operators ensuring system reliability. 🏢 Structure of the IEC 61439 Standard
To ensure that the assemblies they build are "Design Verified." You cannot claim compliance without following the specific testing and calculation protocols outlined in these documents.
Do you need help choosing between verification by or calculation for your panel size?