Open delta transformer

An open delta transformer setup is a simplified power system configuration where only two transformers are used instead of the usual three in a three-phase system. This arrangement still supplies three-phase power, essential for many industrial and commercial operations, but at a slightly lower capacity. It’s typically used when full three-transformer setups are too costly or unnecessary, such as during maintenance or lower power demands. While it’s less efficient and has some limitations, it provides a practical, cost-effective way to maintain three-phase supply in specific situations.