Ordinary type standard configuration: The transformer oil tanks are all cylindrical sealed structures, and all transformers have grounding devices and hooks, American standard installation lifting shackles, and pressure relief valves.

Full self-protection type standard configuration: The transformer is a full self-protection type, which can protect itself against lightning, short circuit and overload. The self-protection system can also protect the power transmission and distribution lines from power outages due to the transformer’s own faults. In addition to having the same characteristics as the ordinary type, such as the cylindrical oil tank, there are hooks outside the box, installation lifting shackles, grounding devices, nameplates, primary iron cores, and winding structures.