Good morning,

Hope someone can shed some light on my case.

I need to model a big Motor Control Center (MCC) panel with a lot of Normal Feeders, DOL-motors, SS-Motors and VFD-Motors. Many of them not running at full load (less than 100%) and many of them affected by a Simultaneity Factor. This is a common scenario in a MCC.
This MCC is not designed by me, is from others so I am only interested in the information at the connecting point of the incoming and to define the ShortCircuit of the MCC busbar.

Having said that, I need to model in ETAP this MCC as basic as possible but valid for Short Circuit simulation and Load Flow analisys.
My idea is to model it as 4 sum loads fed from same busbar:
1) Feeder as Static Load; sum of demanded power for feeders
2) DOL-Motors as Induction Machine; sum of demanded power of DOL motors
3) SS-Motors as Induction Machine with "Voltage Control" type in "Start Dev"; sum of demanded power of SS motors
4) VFD-Motors as a VFD+LumpedLoad

I am concerned about that the results could not be valid, i.e. X-values and SC contribution.

Appreciated a lot if someone could support me, please.
Thank you in advance
Vagojr