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ATTENTION!
Use the listed filters only in lines with a solidly grounded neutral point. Do not use them in IT networks,
lines that are not grounded or grounded via a high impedance.
ATTENTION!
The filters presented in the CFW-11M user's manual are for low voltage power supply. When the
filter is to be used in the primary of the input power transformer (in case the UR11 is set for 12 pulse
rectifier operation) and its input voltage is medium or high voltage, contact the filter manufacturer
(EPCOS or other) in order to check possible configurations.
Q1
Transformer
PE
Ground rod
Figure 3.25 - External RFI filter connection for 6 pulse configuration
Transformer
Filter
L1 L1
L2 L2
L3 L3
E
Ground rod
PE
Figure 3.26 - External RFI filter connection for 12 pulse configuration
Controling and signal wiring
F1
R1
Filter
F2
S1
L1 L1
F3
T1
L2 L2
L3 L3
F4
E
E
R2
F5
S2
F6
T2
Controling and signal wiring
Q1
F1
R1
F2
S1
F3
T1
Q2
UR11
F4
R2
F5
S2
F6
T2
PE
Installation and Connection
+
U
UR11
CFW-11M
V
-
W
PE
PE
Panel or metalic
enclosure
Protective grounding - PE
+
U
CFW-11M
V
-
W
PE
Panel or metalic
enclosure
Protective grounding - PE
3
Motor
Motor
UR11 | 3-25
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