Fuses should be repaired with the power distribution unit at the same time:
Maintenance Check the fuse, according to safety regulations, cut off the power, does not allow the removal of the fuse tube.
Check that the fuses are not allowed on the N-line of the TN grounding system and the grounding protection line of the equipment.
check the fuse, the melt and the protected circuit or equipment is matched, if any problems should be investigated.
Check the appearance of the fuse (remove the fuse tube) with or without damage, deformation, porcelain pieces with or without flashing mark
Clean the dust and check the contact point.
