Equivalent balanced transformer

Equivalent balanced transformer

  • CN 1,106,170 A
  • Filed: 01/25/1994
  • Published: 08/02/1995
  • Est. Priority Date: 01/25/1994
  • Status: Abandoned Application
First Claim
Patent Images

1. , a kind of equivalent balanced transformer is by a star triangle (Yn, D) wiring three-phase transformer and a single-phase voltage regulating transformer composition;

  • Star triangle (Yn, D) primary coil A1, the B1 of wiring three-phase transformer, C1 insert three-phase electrical power system by A, B, C terminal, and X, Y, Z terminal link to each other (ground connection as required), terminal x, the c of secondary winding a2, b2, c2 links to each other and ground connection, and b, z link to each other, a, y link to each other;

    It is characterized in that;

    the single-phase voltage regulating transformer is the self coupling type, and the b5w terminal of the b3t terminal of its primary coil b3, the b5 of secondary winding and star triangle (Yn, D) the secondary winding ay of wiring three-phase transformer links to each other;

    The b4t terminal of the b3w terminal of Single-phase variac primary coil b3, the b4 of secondary winding and star triangle (Yn, D) the secondary winding bz of wiring three-phase transformer links to each other;

    The number of turn of coil has following relation;

    b4=b5;

    b4(b5)=(√

    3-1)/2;

    By b5t and earth terminal, b4w and earth terminal branch two-phase are drawn and are supplied with load.

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