Specifications

29
Schneider Electric
Implementation guidelines (continued)
Protection inside a cabinet or small machine
b Clamp all cables against equipotential structures.
b Plastic trunking can be used in cabinets if they are installed on:
v the back grid,
v or the DIN rails connected to the cabinet ground.
Cabinets are made of various parts assembled with screws or hinges, or welded.
The many resulting openings diminish the electrical continuity.
To mask these opening, place cable entries near assembly points, or combine them
with an earth braid.
The presence of many equipotentially
bonded structures in machines and
cabinets provides maximum protection.
E52302
Grounding braid
Collar
NO
YES
Cabling Guidelines