Engr. Maria Romina P. Angustia

Objective of LectureDescribe the equations that relate

the resistances in a Wye (Y) and Delta () resistor network.Wye networks are some times called T networks and

Delta networks are occasionally called networks.

Wye and Delta Networks3 terminal arrangements:

Wye (Y) Delta ()

To transform a Wye into a Delta

To transform a Delta into a Wye

Simplification:If R1 = R2 = R3 = R, then Ra = Rb =Rc = 3R

If Ra = Rb = Rc = R’, then R1 = R2 = R3 = R’/3

Transform the wye network shown to a delta network.