CAM01344.jpg [286.79kb] [url=/ver-adjunto/aHR0cHM6Ly9jZG4ueW9yZXBhcm8uY29tL3VwbG9hZHMvZGVmYXVsdC8wMDAyLzE3L0NBTTAxMzQzLTkzNjE1LmpwZw[=] Hello everyone, this transformer is recovered from a UPS unit what I do not understand is because it only has three cables, it is the first time I see it, those that I have seen have more and identify primary and secondary but in this case I am lost, thank you for the help

Good afternoon comrade, measure continuity between the three wires, if there is contact it may be an autotransformer, if there is no contact, then it is a shock coil (the two points with continuity) and the shield mesh (the one that is isolated).