Intermediate

Three-Phase Systems

Three-phase power is how almost all large-scale electricity is generated, transmitted, and used. From industrial motors to commercial buildings, understanding three-phase is essential for anyone moving beyond domestic work.

Open access: every current ElectraCore lesson is available without an account or payment.

6 modules28 lessons4h 12minOpen access

Course contents

Course curriculum

0 of 28 lessons complete. Progress is stored on this device.

Start courseBegin with Why three-phase?: advantages over single-phase

Course goals and prerequisites

What you'll learn

Explain why three-phase systems are used over single-phase
Calculate line and phase voltages and currents in star and delta
Analyse balanced and unbalanced three-phase loads
Understand and calculate three-phase power and power factor
Select motor starters for three-phase induction motors
Read and produce three-phase wiring diagrams

Before you begin

Electrical Fundamentals
Basic AC circuit knowledge

01. Why three-phase?: advantages over single-phase

lesson8min

02. Generation of three-phase voltages

lesson9min

03. Phase sequence: L1, L2, L3

lesson8min

04. Phasor representation of three-phase

lesson9min

05. Phase fundamentals quiz

quiz8min

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Three-Phase Systems

Open access: every current ElectraCore lesson is available without an account or payment.

6 modules28 lessons4h 12minOpen access

What you'll learn

Explain why three-phase systems are used over single-phase

Calculate line and phase voltages and currents in star and delta

Analyse balanced and unbalanced three-phase loads

Understand and calculate three-phase power and power factor

Select motor starters for three-phase induction motors

Read and produce three-phase wiring diagrams

Three-Phase Systems

What you'll learn

Prerequisites

Course curriculum

What you'll learn

Before you begin

Three-Phase Systems

What you'll learn

Prerequisites

Course curriculum

What you'll learn

Before you begin