POWER ELECTRONICS AND CABINET FEATURES
PRODUCT
ACS6000
DOCUMENT KIND
User manual
DOCUMENT ID.
3BHS212794 E01
REV.
N
LANG.
en
PAGE
60/266
3.2.6.1. Cooling circuit
The water cooling system distinguishes two circuits for dissipating heat losses
(Fig. 3-19):
– Internal cooling circuit: circulates coolant (distilled/deionized cooling liquid)
and transfers the heat losses of the main power components to the exterior.
The internal cooling circuit also includes - among the other components - the
water treatment circuit, which continuously deionizes the cooling liquid to
keep conductivity at a low level.
– External cooling circuit: transfers the heat losses from the water-to-water heat
exchanger to the exterior.
The water cooling units are pressurized and not open to atmospheric pressure.
Figure 3-19 Cooling circuit in an ACS6000 drive
3.2.6.2. External cooling connection
Two flanges connect the external cooling circuit water pipes to the cooling unit.
They are part of the shipment. The feeding and return pipe can either be entered
through the top, bottom, side or back. The desired pipe entry is specified when
ordering the drive.
1) Return pipes
2) LSU
3) CBU
4) INU
5) WCU
6) Heat exchanger
7) External cooling circuit
8) Internal cooling circuit
9) Feeding pipes
6
8
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