03 POWER ELECTRONICS AND CABINET FEATURES
3BHS212794 E01 REV M ACS6000 USER MANUAL 68/278
Water pump Circulates the coolant through the internal cooling circuit.
The standard solution is based on redundant pumps (one
of the two pumps is always on standby and starts
automatically if the running pump fails).
An alternative solution based on one pump is
also available.
Water-to-water
heat exchanger
Transfers the heat from the internal cooling circuit to the
external cooling circuit.
Expansion vessel Used for pressure compensations
Ion exchange vessel The ion exchange vessel in the water treatment circuit
deionizes the coolant of the internal cooling circuit and
maintains the conductivity.
3-way valve The three-way valve controls the flow of the external
cooling liquid through the water-to-water
heat exchanger.
Table 3-4 Main components in a WCU cabinet (continued)
Component Description
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