How Giant Power Transformers Are Made — From Steel and Copper to the Power Grid

How are massive power transformers built? This video follows the manufacturing process from precision-cut electrical steel cores and insulation systems to high- and low-voltage windings, final assembly, tap changers, oil filling, and testing. We also take a look at how smaller distribution transformers are built and how they differ from large power transformers.
00:14 Magnetic Core Manufacturing
01:42 Transformer Windings
05:45 Transformer Tank
07:11 Final Assembly
09:29 Distribution Transformer Manufacturing