03 POWER ELECTRONICS AND CABINET FEATURES
3BHS842007 E01 REV C
ACS6080
USER MANUAL
3.3.2
Input filter unit (IFU)
The IFU is used in combination with 6-pulse active rectifier units
connected to a weak supply network. The tuned filter is located between
the input transformer and the ARU and reduces harmonic voltages
injected to the supply network.
Figure 3-18 IFU circuit diagram
Figure 3-19 IFU cabinet
(1) TEU
(2) IFU
(3) ARU
(1) Resistor
(2) Capacitor
(3) Reactor
L1
L2
L3
L1
L2
L3
1
2
3
1
2
1
2
3