FIELD: electricity.
SUBSTANCE: balance-to-unbalance traction-feeding transformer includes three-leg core, three-phase symmetric primary winding and three-phase secondary winding. Secondary winding is connected as per three-rayed zigzag scheme, each ray of which consists of two in-series connected similar windings located on different core legs. Each of the windings of one of the rays has voltage which is 2.5-3.0 times less than that of each of the windings in two other rays. Transformer is converter of three-phase voltage into symmetric two-phase one with phase displacement angle between voltage vectors, which is close to 90°.
EFFECT: simplifying the design and economy of materials.
1 dwg
