3 Engineering

LXM32

3.6Mains reactor

A mains reactor is required if at least one of the following criteria is met:

The output power of the drive is to be increased.

The short-circuit current rating (SCCR) of the supplying mains is greater than specified for the drives.

Current harmonics are to be reduced.

If one drive requires a mains reactor, then all drives connected via the DC bus must be equipped with mains reactors.

The mains reactor for several drives with a common AC fuse must be rated in such a way that the nominal current of the mains reactor is greater than the total of the input current of the drives.

The fuse rating of the fuse upstream of the mains reactor must not be greater than the nominal current of the mains reactor.

L1

 

 

L2

 

 

L3

 

 

E1

S1

 

E2

S2

 

E3

S3

 

 

L3 L2 L1

L3 L2 L1

 

PC/- PA/+

PC/- PA/+

DC+

 

 

DC -

 

 

Figure 10: Wiring of drives with common AC fuse and a mains reactor, exam- ple shows three-phase drives.

MNA01M001EN, V1.01, 08.2014

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Common DC bus

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Schneider Electric MNA01M001EN manual Mains reactor

MNA01M001EN specifications

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