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Windings Connection Symbols

Symbology of the different multiphase winding connections 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 interconnected windings symbol 6 interconnected windings   Interconnected multiple-phase winding symbol Interconnected multiple-phase winding
2-phase winding symbol 2-phase winding   3-phase Scott symbol 3-phase Scott
2-phase winding, 4-wire separated connection symbol 2-phase winding, 4-wire separated connection   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 winding, 4-wire  grounded connection symbol 3-phase winding, 4-wire grounded connection   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 grounded winding symbol 4-phase grounded winding   3-phase grounded zig-zag symbol 3-phase grounded zig-zag
3-phase ungrounded zig-zag symbol 3-phase ungrounded zig-zag   6-phase double zig-zag with grounded neutral symbol 6-phase double zig-zag with grounded neutral
3-phase, 3-wire delta symbol 3-phase, 3-wire delta   3-phase, 4-wire grounded delta connection symbol 3-phase, 4-wire grounded delta connection
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 grounded connection symbol 3-phase winding, open delta grounded connection
3-phase winding, open delta connection symbol 3-phase winding, open delta connection   3-phase winding, open delta grounded connection symbol 3-phase winding, open delta grounded connection
6-phase winding, double star connection symbol 6-phase winding, double star connection   6-phase winding, double star grounded connection 6-phase winding, double star grounded connection
6-phase star winding symbol 6-phase star winding   6-phase hexagonal winding symbol 6-phase hexagonal winding
6-phase double delta winding symbol 6-phase double delta winding      

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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