. Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise. PlG. 1,546.—Diagram of three phase star grouping, commonly called Y grouping owing to itsresemblance of the letter Y. The current in each main is obviously equal to the currentin each phase winding, but the terminal pressure is the vector sum of the pressures in thecomponent phase windings, that is, V3 multiplied by the pressure in one phase. insulated, and
. Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise. PlG. 1,546.—Diagram of three phase star grouping, commonly called Y grouping owing to itsresemblance of the letter Y. The current in each main is obviously equal to the currentin each phase winding, but the terminal pressure is the vector sum of the pressures in thecomponent phase windings, that is, V3 multiplied by the pressure in one phase. insulated, and the three other ends are connected to threeterminals a, b, c, as shown in fig. 1,546, or in the case of revolvingarmatures to three slip rings. Ques. What other name is given to this connection,and why? Ans. It is commonly called a Y connection or groupingowing to the resemblance of its diagrammatic representationto the letter Y. - ha: \ectricity F*i. 1-547.—Radial <Ka-. gram <-C tlww CONSTRUCTION OF ALTERNATORS 1,247 Ques. How is a three phase mesh connection arranged ? Ans. The three circuits are connected up together in theform of a triangle, the three corners are connected to the threeterminals, a, b, c, as shown in fig. 1,549, or in the case of re-volving armatures to three slip rings.
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