Windings Connection Symbols

Symbology of the different connection forms of the multi-phase windings of the high voltage electrical transformers in wye or star, delta, zig-zag...

Symbology of Windings Connection

Symbol Description Symbol Description
1 Winding symbol 1 Winding   2 Separated winding symbol 2 Separated winding
3 Separated winding symbol 3 Separated winding   6 Separated winding symbol 6 Separated winding
6 winding interconnect symbol 6 winding interconnect   Multiple-phase winding interconnect symbol Multiple-phase winding interconnect
2-phase winding symbol 2-phase winding   3-phase Scott symbol 3-phase Scott
2-phase winding, 4-wire connection separated symbol 2-phase winding, 4-wire connection separated   2-phase winding, 4-wire connection symbol 2-phase winding, 4-wire connection
2-phase, 3-wire connection with ground symbol 2-phase, 3-wire connection with ground   3-phase, 4-wire ungrounded symbol 3-phase, 4-wire ungrounded
2-phase, 5-wire grounded symbol 2-phase, 5-wire grounded   3-phase wye with neutral grounded symbol 3-phase wye with neutral grounded
3-phase winding, 4-wire connection symbol 3-phase winding, 4-wire connection   Symbol of 3-phase windiwg, 4-wire connection, neutral brought out 3-phase winding, 4-wire connection, neutral brought out
3-phase windiwg, 4-wire connection grounded symbol 3-phase winding, 4-wire connection grounded   Symbol of 4-phase winding 4-phase winding
3-phase wye or star symbol 3-phase wye or star   4-phase winding, neutral brought out symbol 4-phase winding, neutral brought out
4-phase winding grounded symbol 4-phase winding grounded   3-phase zig-zag grounded symbol 3-phase zig-zag grounded
3-phase zig-zag ungrounded symbol 3-phase zig-zag ungrounded   6-phase double zig-zag neutral grounded symbol 6-phase double zig-zag neutral grounded
3-phase, 3-wire delta symbol 3-phase, 3-wire delta   3-phase, 4-wire delta grounded symbol 3-phase, 4-wire delta grounded
3-phase, 3-wire delta with ground symbol 3-phase, 3-wire delta with ground   3-phase winding, open delta connection symbol 3-phase winding, open delta connection
3-phase winding, 4-wire delta connection symbol 3-phase winding, 4-wire delta connection   3-phase winding, open delta connection grounded symbol 3-phase winding, open delta connection grounded
3-phase winding, open delta connection symbol 3-phase winding, open delta connection   3-phase winding, open delta connection grounded symbol 3-phase winding, open delta connection grounded
6-phase winding, double star connection symbol 6-phase winding, double star connection   6-phase winding, double star connecion grounded symbol 6-phase winding, double star connecion grounded
6-phase winding star symbol 6-phase winding star   6-phase winding hexagonal symbol 6-phase winding hexagonal
6-phase winding double-delta symbol 6-phase winding double-delta      

Scheme with coils (winding) for three-phase current generation

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Three-phase, Wye connection with neutral symbol Three-phase, Wye/Star (Y) connection with neutral
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  Three-phase, Delta connection symbol Three-phase, Delta (𝚫) connection
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phases symbol Phases R/S/T or L1/L2/L3
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