Circuit Theory-2 #12 | Delta Connections and Three-Phase Power

Instructor: Dr. Süleyman Burak ÇELİK

In this Circuit Theory-2 lesson, we move from Y-Y systems to delta-connected three-phase loads and derive the key line-phase relationships. You will learn: - Delta topology and why there is no neutral point - Phase current versus line current in a delta load - How to derive I_A = I_ab - I_ca with phasors - Why balanced delta systems give I_L = sqrt(3) I_phase - Why V_L = V_phase in a delta connection - The universal three-phase power formula - A worked 208 V delta-load example - The intuition behind rotating magnetic fields Timestamps: 00:00 Delta Connections and Three-Phase Power 00:03 From Y-Y to delta 00:28 Delta topology 01:06 Phase currents inside the delta 01:39 Line current definition 02:11 Deriving I_A 03:08 Line current result 03:46 Voltage in a delta connection 04:15 Universal three-phase power formula 04:53 Worked example 06:48 Rotating magnetic field intuition 07:22 Wrap Next lesson: Laplace transform. Part of the Circuit Theory-2 playlist by AcEdumy.