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Mr. Benvenuto Barro founded the company in 1960 when he sensed that the increasing energy demands in certain sectors could be met with generating sets. In the 1980's, with the generational change from father to sons, Lorenzo and Marco, the company moved its interest and activities into foreign markets where seriousness, commitment and product quality have been rewarded globally over the course of 50 years. Visa works in 60 countries on 7 continents.


With star the start of each of the three phases is connected together. Connections are taken from the ends of the three phases to give the three phases
Star symbol voltage


With Delta the starts and ends of the phases are connected. The end of phase 1 is connected to the start of phase 2, the end of phase 2 to the start of phase 3, and the end of phase 3 to the start of phase 1. Connections are taken from the three start-end points to give the three phases.
Delta symbol voltage
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