09/01 AWB8230-1412GB
Radio interference filter
115
Radio interference filter
RFI filters have discharge currents to earth, which can be higher
than the nominal values in the event of a fault (phase failure, load
unbalance). To avoid dangerous voltages, the filters must be
earthed before use.
For discharge currents f 3.5 mA, VDE 0160 and EN 60335
specify that
• the protective conductor must have a cross-section f 10 mm
2
or
• a second protective conductor must be connected, or
• the continuity of the protective conductor must be monitored.
The table below matches radio interference filters to frequency
inverters.
Figure 98: Single- and three-phase RFI filters
h
The DE5-LZ1 and DE5-LZ3 radio interference filters can be
fitted to the side or below the frequency inverter.
DF5 Rated mains
voltage
RFI filter Maximum leakage
current in rated
operation
Maximum leakage
current under fault
conditions
Power loss of RFI filter
at rated operation
mA mA W
322-018
322-037
1 ~ 198 V – 0% to
252 V + 0 %
DE5-LZ1-007-V2 < 3.5 – 6
322-055
322-075
DE5-LZ1-012-V2 < 3.5 – 7
322-1K1
322-1K5
322-2K2
DE5-LZ1-024-V2 < 15 – 9
340-037
340-075
340-1K5
3 ~ 342 V – 0% to
506 V + 0 %
DE5-LZ3-007-V4 < 3.5 < 32 7
340-2K2
340-3K0
340-4K0
DE5-LZ3-011-V4 < 3.5 < 62 10
340-5K5
340-7K5
DE5-LZ3-020-V4 < 10 < 120 14
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