Dold 0065014 MK5130N EMI filter (L x W x H) 97 x 22.5 x 90 mm 1 pc(s) Piece

The converters, which are increasingly used in installations, generate steep switching edges at their output, which cause significant EMC interference and high-frequency equalizing currents on the connected circuit components. The devices connected to the converter can be faulty or possibly destroyed. The HF faults can be forwarded to other plant components, e.g. via the DC 24V supply. This is the case, for example, for measuring relays whose measuring input is connected to the converter. The auxiliary voltage of the measuring relay is electrically isolated from the measuring input, but connected to the measuring input via an unavoidable coupling capacity in the internal power supply on the HF side. At corresponding frequencies, equalizing currents from the converter to the auxiliary voltage level can flow up to several amps. In general, all monitoring devices connected to the converter can be disturbed with a separate auxiliary voltage or with additional inputs or outputs. It is also possible that the faults produced by the converter are forwarded to other plant components. The MK 5130N/LG 5130 suppression filters have 4 reactors connected in series in the filter paths for the 3 phases (inputs L1 / L2 / L3, outputs L1’ / L2’ / L3’) to ensure broadband interference suppression up to high frequencies. If the PE is additionally connected, a Y interference suppression capacitor is effective against PE and the interference suppression is improved again ("T filter"). By switching the MK 5130N/LG 5130 between the converter and the measuring relay/device to be suppressed, the RF current flowing through the coupling capacities is greatly reduced, as the filter paths represent an impedance increasing with the frequency. This prevents disturbances or even destruction of the connected devices.

· Operation of measuring relays on converters and devices with high-frequency interference voltages
· Interference suppression of circuit parts and small consumers up to 50 mA per phase
· in the event of interference from power tools, contactors and fluorescent lamps
· 3-phase interference suppression filter for measurement relays
· Suppression of EMC interference from conducted interference voltages
· Wide-band damping of the high frequency components
· for nominal voltages up to 3 AC 1000 V.
· Optional PE connection to be used for further improved interference suppression
· Width 22.5 mm

This text is machine translated.