Question: MV Transformer doesn't get input

Hello everyone,
I'm pretty new to IC² now, but I've already figured out some stuff on my own and with the help of your wiki. First of all I want to say this mod is great.
Next my question/problem: I have a nuclear reactor (with 6 reactor chambers) connected (via glass fibre cable) with the 3-dotted face of a MV Transformer (other side golden cable).
I have a detector cable on both sides, but none of them is on. Even if I put a MFE behind the transformer I don't get any input.
I was already wondering when I connected the reactor to a MFSU and afterwards to a MV Tranformer. The MFSU was just storing, but not emitting.

I hope anyone of you can help me.
Thanks in advance
Padarom

Well I have no idea why it's working now, but it seems like it's fixed.
The setup I had on my server was the same, except that the glas fibre cable was connected to the top and the MV Transformer was on the height of the ceiling.

Padarom

I now put a MFE on the one-dotted side (still with those detector cables) and it charges. So I think the transformer isn't reversed.