EMC-PARTNER CDN2000-06-25, User Manual

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E-CDN2000-06-25-E-Manual 23/54
4 Panels of the CDN2000-06-25
4.1 Front panel of the CDN2000-06-25
For fusing, a combined circuit breaker is built in. The trip point lies slightly above the nominal current level
and therefore only causes a separation by a moderate continuous overload. The magnetic trips are set for a
switching point at 5 to 10 times the nominal current, so that they do not inadvertently react to the high start-
up currents of motors or to current peaks from transformers.
The SURGE coupling is clearly organised as shown in the above photograph For couplings between the
phases or phase and neutral, 18 µF is switched in as a coupling element. For couplings against the
protective earth, the coupling impedance changes to 10 Ohm with 9 µF in series
Filter and
overcurrent trip
Supply input
Supply output
Switch field coupling
impedance and path
Ls ON/OFF