Hi there,
Yeah it looks like a higher frequency transformer that would most likely be
used in a switchmode step down or step up power supply.
To test this thing you have to do a number of things, for example...
1. Use an ohmmeter to determine which windings are connected and which
are isolated.
2. Going by the short lengths of wire coming out of the coil, judge the approximate
current that winding would be able to stand.
3. Apply ac voltages to each winding in turn, and measure the output on the
other windings, then calculate the turns ratio for each winding.
4. Depending on the turns ratios found, determine if this would be of use to you.
5. Apply a variable frequency ac, variable voltage signal to one of the primaries if
possible, then determine what level the core saturates by measuring the current.
A scope helps too so you can check out the waveshapes.
As you can see there are a number of tests that would have to be performed.
Because there are so many leads it makes it a little harder with this transformer
because you have to apply a signal to every pair of leads and measure every
other pairs output voltage to determine how the transformer is wound.
Once you know more about it you can then apply a square wave and see
how well the outputs work by applying a load or loads to the other windings.
You can also see how hot the thing gets.
Good luck with it.