Star–Delta (Y–Δ) Converter
Delta to Star and Star to Delta Transformation • Step-by-step Solution
Convert a Delta (Δ) network of resistances into an equivalent Star (Y)
network, or a Star into a Delta. Both networks connect the same three terminals A, B and C;
the star point is marked N. The calculator shows both diagrams, the formulas used and a
terminal-resistance check.
1
Select Conversion
Delta (Δ)
Star (Y)
2
Enter Delta (Δ) Resistances
3
Circuit Diagrams
Delta (Δ) NetworkGiven
Star (Y) NetworkEquivalent
✓ Equivalent Star (Y) Resistances
Step-by-step Solution
Verification – Resistance Between Terminals
Both networks are equivalent: the resistance measured between any two terminals is the same,
with the third terminal left open.
Note: RAB is the delta resistor connected between terminals A and B.
RA is the star resistor connected from terminal A to the star point N. Enter all three
resistances in ohms (Ω); every value must be greater than zero.
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