3
Installation and Connection
3-38 | CFW-11 RB
Controling and signal
wiring
Transformer
Ground
rod/grid or
building steel
structure
Panel ormetallic
enclosure
Protective grounding - PE
PE
Motor
W
PE
CF W-11 DC
U
W
V
L2
L1
L3
E
F1
F2
F3
PE
RFI
Filter
Filter
Q1
E
L3
L2
L1
V
CF W-11 RB
+
-
U
Figure 3.30: External RFI filter connections
Use only listed filters in lines with solid grounded neutral point. Do not use RFI filtes in IT networks, lines not
grounded or grounded via a high impedance.
Take the usual precautions for EMC filters installation: do not cross the filter input cables with the output cables,
mount the filter on a metallic plate assuring the biggest possible contact surface between the filter and the plate,
connect this plate to the ground via cordage.
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