: Verify that the "Type Test" certificates match the physical unit. Ensure no components were loosened during transit. Cable Entry and Sealing : Use appropriate glands to maintain the declared IP (Ingress Protection)
The standard specifies that assemblies are designed for specific environments. Before installation, verify: iec 604391 pdf install
First, a critical note: The correct designation is , not "604391". The missing hyphen often leads to dead ends. IEC 60439-1 was the international standard for Low-voltage switchgear and controlgear assemblies – Part 1: Type-tested and partially type-tested assemblies . : Verify that the "Type Test" certificates match
For team installation (multi-user):