Grounding Of Mounting Structures; Busbar Material And Joints; Tightening Torques; Cabinet Cooling - ABB ACS800 Cabinet Installation And Operating Instruction

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Grounding of mounting structures

Make sure any cross-members or shelves on which components are mounted are
properly grounded and the connecting surfaces left unpainted. The drive module will
be grounded to the cabinet frame via its fastening screws.

Busbar material and joints

Tin-plated copper is recommended but aluminium can also be used.
Before joining aluminium busbars, remove the oxide layer and apply suitable anti-
oxidant joint compound.

Tightening torques

The following table applies to grade 8.8 screws (with or without joint compound).
Screw size
M5
M6
M8
M10
M12
M16

Cabinet cooling

The installation site must be sufficiently ventilated.
The cabinet must have enough free space for the components to ensure sufficient
cooling. Observe the minimum clearances given for each component.
The heat dissipated by cables and other additional equipment must also be
ventilated.
The air inlets and outlets must be equipped with gratings that
• guide the air flow
• protect against contact
• prevent water splashes from entering the cabinet.
Planning the cabinet installation
Torque
3.5 N·m (2.6 lbf·ft)
9 N·m (6.6 lbf·ft)
20 N·m (14.8 lbf·ft)
40 N·m (29.5 lbf·ft)
70 N·m (52 lbf·ft)
180 N·m (133 lbf·ft)