Installation
Manual Single Power Unit BUM64S/A/F
Document no.: 5.01056.03
57
6
Cable tails that are only 3 cm long (1 cm of wire = 10 nH) reduce the screening effect in
the megahertz range by up to 30 dB!
6.7.2.4 Filtering
The functioning of the unit requires no filters to be fitted. To keep EN50081-2 respectively
EN61000-6-4 under certain circumstances input or output side filters may be required.
If you have question on how to perform filtering you can order manual “Filter for network
applications BFN“.
6.7.2.5 Filter mounting
h
arrange the filter close to the appliance.
h
use a screened mains input line between unit and filter if the cable length exceeds
30 cm (grounding on both sides).
h
input and output cables of the filter should be run separate of each other (distance >
30 cm).
h
the housing of the filter should be grounded using a wide surface.
6.7.2.6 Discharge currents
Due to the principle of operation, parasitic capacities in the power unit, motor cable and
motor windings can add to discharge currents of 100 mA or higher.
This means that converters may be incompatible with earth leakage circuit-breakers!
h
in this context observe the safety information given in the EN 50178/VDE 0160 sect.
5.2.11.2. standard.
NOTE
The screen braiding must have a coverage of at least 85%.
The following cables have a particularly high interference potential:
m
motor cable
m
cable to external ballast resistors
m
cable between mains filter and converter
Summary of Contents for BUM64A
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