Proper physical placement prevents mechanical stress, overheating, and premature component failure.
Clean all joint contact surfaces. If copper busbars are bare, lightly oxide-clean them using a non-metallic abrasive pad. Do not remove silver or tin plating if present. iec 604391 pdf install
standard was for decades the definitive global benchmark for low-voltage switchgear and controlgear assemblies. While it has since been superseded by the Proper physical placement prevents mechanical stress
Covered assemblies for power distribution in public networks , like the cabinets you see on residential streets. iec 604391 pdf install
Once site conditions are verified, the physical structural integrity of the switchgear assembly must be secured.