Appendix
10/05 AWB8230-1541GB
208
RFI filters
RFI filters have discharge currents to earth, which, in the event of
a fault (phase failure, load unbalance), can be higher than the
rated values. To avoid dangerous voltages, the filters must be
earthed before use.
For leakage currents f 3.5 mA standards EN 61800-5-1 and
EN 50178 specify the following:
• 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.
Table 43: Frequency inverter assignments and technical data for DE51-LZ…
Figure 181:Single- and three-phase RFI filters
h
Radio interference filters DE51-LZ1 and DE51-LZ3 can be
side- or footprint-mounted to the frequency inverter
(a section “Fitting a radio-interference (RFI)
filter”page 29).
h
For mobile applications, a plug connector is permissible
only when a second, permanently installed, earthing
conductor is installed.
Figure 182:Block diagram, DE51-LZ1
P
N
PE
P'
N'
DF51- Rated mains
voltage
50/60 Hz
RFI filter Rated
current
Overload
current
1)
Maximum
leakage
current at
rated
operation
Maximum contact current on
fault at interruption
Power loss of
RFI filter at
rated
operation
PE PE and N
2)
, PE
and 2 phase
conductors
3)
A A mA mA mA W
320-4K0 3 ~ 230 V + 10 %
320-5K5
320-7K5
322-018
322-037
322-055
1 ~ 230 V + 10 % DE51-LZ1-
007-V2
7 10.5 18 25 47 5
322-075
322-1K1
DE51-LZ1-
012-V2
12 18 19 26 51 7
322-1K5
322-2K2
DE51-LZ1-
024-V2
24 36 18 24 48 14
To Next Page
Loading...
