CONSTRUCTING POWER TRANSFORMERS: VIDEO Construction of power transformers undergoes a rigorous process. A video presentation of ABB shows the step-by-step process in manufacturing this complex electrical power apparatus. Shown also in this video is the part-by-part construction, from winding, core, tank, accesories up to the delivery of the power transformer is clearly explained in this video. ABB is a major transformer manufacturer throughout the world. ABB power transformers are built and designed to meet the individual customer's needs. This experienced attendance to details lies behind the success of ABB's transformers. This approach is carried throughout the manufacturing process: design, core, winding, drying, tank, quality assurance, assembly, testing, transport and installation and support.