09/01 AWB8230-1412GB
EMC compliance
23
are high frequency interference sources, the earthing measures
must be undertaken with low resistance's on surfaces which as
large as possible.
With leakage currents f 3.5 mA, the VDE 0160 and EN 60335
stipulate that either:
• the protective conductor must have a cross-section f 10 mm
2
,
• the protective conductor is monitored to ensure continuity or
• an additional protective conductor is also installed.
For the frequency inverters of the DF5 series use the assigned filter
DE5-LZ....
EMC measures in the control panel
To ensure EMC-compliant setup, connect all metallic components
of the devices and of the control cabinet with each other using a
large cross-section conductor with good HF conducting properties.
Do not make connections to painted surfaces (Eloxal, yellow chro-
mated). If there is no alternative, use contact and scraper washers
to ensure contact with the base metal. Connect mounting plates
to each other, and the cabinet doors with the cabinet using
contacts with large surface areas and short HF wires.
An overview or all EMC measures can be seen in the following
figure.
Figure 12: Earthing measures
Z1: EMC filter
G1:frequency inverter
M
3h
E
L/L1
L2
N/L3
U
V
W
R2
S2
T2
L1
L2
L3
L1
Z1 G1
L2
L3
PE
E
e
Figure 13: EMC-compliant setup
PE
15
PES
PES
PES
W2
U2
V2
U1
V1
W1
PE
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