MG8Q6ES42 - N CHANNEL IGBT
This module is for driving a 3-phase motor coils from a single DC bus. You would need gate drivers and a bunch of other stuff to make it operational for the original purpose. The high side IGBTs need a gate drive above the positive rail so those need a supply on top of that rail or a bootstrapped drive and continuous switching. 

IGBTs are driven similarly to n-channel enhancement mode MOSFETs- about 10-15V on the gate to turn them on, and 0 or perhaps a bit negative voltage to turn them off, but 0V will do for testing. You can test each IGBT individually (just leave other connections open) with a 12V supply and a small test load (such as an automotive tail lamp bulb).