Accessories; Mains Choke - Lenze 8200 vector series Manual

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3.6
3.6.1
3.6.1.1
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Accessories

Mains choke

A mains choke is an inductor which can be connected into the mains cable of the frequency inverter.
Mains chokes can be used together with RFI filter and / or motor filters.
The mains choke has the following functions:
Reducing system perturbations
– The curved shape of the mains current is approached to the sinusoidal shape.
Reducing the mains current
– Reducing the effective mains current (i.e. reducing the mains, cable, and fuse load).
Improving the service life of the 8200 vector
– Reducing the AC current load on the electrolytic capacitors in the DC bus serves to prolong
their service life.
Note!
Some 8200 vector frequency inverters must always be operated with a mains
choke, independent of EMC measures.
When operating with a mains choke the maximum motor voltage does not reach
the value of the mains voltage - typical voltage drop at rated frequency and rated
device current: 6 % .
Basic rules for wiring
The mains choke is wired via single cores to the mains.
The cable cross-section must be rated for the assigned fuse protection (EN 50178).
Wiring according to EMC
EDBEMV82EV EN 3.0
Accessories
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