No. The correct citation is IEC 60439-1 . The number 604391 lacks the hyphen and final digit meaning.
The assembly must be suitable for the environment in which it is installed. Key considerations include:
For new installations, using the updated 61439-1 standard is recommended. However, for maintenance or extension of existing 60439-1 systems, referring to the old standard is still necessary. 6. Conclusion iec 604391 pdf install
Before unboxing or mounting low-voltage switchgear, engineers must extract and review the specific physical and environmental metadata from the manufacturer's product PDF. Environmental and Service Conditions
| Old Standard | New Standard | Title | |--------------|--------------|-------| | IEC 60439-1 (TTA) | | Low-voltage switchgear and controlgear assemblies – General rules | | IEC 60439-2 (PTTA) | IEC 61439-2 | Power switchgear and controlgear assemblies | The assembly must be suitable for the environment
Assemblies must be installed on a level, solid foundation capable of supporting their weight under static and dynamic loads (such as short-circuit forces).
: Tighten all electrical connections to the manufacturer’s specified torque settings to prevent overheating. Verification Testing iec 604391 pdf install
Understanding IEC 60439-1: Installation and Compliance for Low-Voltage Switchgear IEC 60439-1