Answer / alf

Poorly worded question.

1) The VSD (Inverter) is connected to an external supply at 400V, 3ph, 50Hz..

2) UDC+, UDC- (R+; R-) are the terminals for connecting an external brake. The voltage on these terminals is over 500Vdc and is supplied FROM the VSD, not connetected TO the VSD

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