Functional Description; Block Diagram Filters For Mains Applications (Simplified); Block Diagram - Baumuller BFN 3-1-0007-001 Instruction Handbook Manual

4.1
General information
4.1.1

Functional description

The resulting impedance of the parts used in the filters leads to an optimum mismatch
between the mains- and the load impedance. Now the interference-current can return to
its interference source. The dropping harmonic voltages at the impedance of the system
can be reduced substantially between the frequency range 150 kHz ... 30 MHz .
WARNING!
Filters cause high discharge currents and are incompatible, if they have RCDs. The
notes of EN 50178 must be considered when configuring. Due to the high discharge
currents the cross-section of the ground conductors at the filter must be at least 10
mm
the filter before commissioning.
NOTE!
In order to return the interference current with low impedance to its interference
source, mounting must be made on a conductive mounting plate (mounting of the
mains filter and of the power converter, which must be cleared and of the bonded
face-to-face contacting of the motor cable screen). The use of unvarnished mounting
plates provides the best results.
4.1.2

Block diagram filters for mains applications (simplified)

Power supply
Figure 10:
36
Instruction handbook Mains filters BFN
Document No.: 5.09010.03
of 70
2
(EN 50178, chapter 5.3.2.1). The grounding conductor must be connected to

Block diagram

Load
Baumüller Nürnberg GmbH