10 inverters controlled by CU 320-2DP

Hello everybody,

I have tthe following configuration:

10 inverters Double Motor Module 3 x 3 A each, fed together through a fuse 100 A from the DC bus.

The inverters are controlled by a CU 320-2DP. 

In the CU, everything is "Ready for operation" for all the inverters; howevver, when connecting the infeed, the fuse 100 A blows out.

PS. Using the Condenser formation circtuit (3 electric bulbs + 1 circuit breaker), on each inverter everrything is OK.

I welcome any suggestions!

Thank you in advance,

Gheorghe Bogdan

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Split from Sinamics S120 Power Module.