PM250 Broken with Fire !! Any idea of causes?

Hi

I've had a problem last week with 2 PM250 units that had fire at the same time from the same part of unit.

I would like to understand a possible cause of that and if possibile to know what there is inside the unit on the part damaged on the picture : capacitors ????

As you can see on the picture, both units had th esame problem at the same time.

One unit is a 15Kw and the other is a 22kW.

Units are 3 years old and work every day with no problem.

Thanks.

Dave

Here is the label of 15Kw unit.

Dave

Hi

here is the label of 22kW unit.

Dave.

hello friend,

please read my post...

https://support.industry.siemens.com/tf/ww/en/posts/power-module-pm250-regenerative-broken-with-short-circuit/268681/?page=0&pageSize=10