8.1.5
Equipotential bonding
All components in the cooling system (SINAMICS units, heat exchanger, piping system,
pump, pressure compensator, etc.) must be connected to an equipotential bonding system.
A copper bar or stranded copper with the appropriate conductor cross-sections must be used
for this purpose to eliminate electrochemical processes.
If the installation comprises several control cabinets, these must be bolted together in a
solid, conductive connection (e.g. bolt cabinet cross-beams together directly at several
points to make conductive connection). This eliminates potential differences and thus the risk
of electrochemical corrosion. A PE bar must be installed in every cabinet (including the
recooling system) and the individual bars then interconnected.
Chassis Liquid Cooled Power Units
Manual, (GH7), 01/2011, 6SL3097-4AM00-0BP1
Cooling circuit and coolant properties
8.1 Cooling circuits
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