COURSE CONTENTS

DAY 1

Course Overview

Unit 1 – Introduction to Electrical and Electronic Components

Introduction to electric circuit

Resistance and resistivity

Inductors and capacitance

Capacitors and capacitance

Magnetic circuits

Electromagnetic induction

Semiconductor diodes

Transistors

Thyristors

Unit 2 – Introduction to Circuit Principles

Series and parallel circuits

Magnetic circuits

DC circuits

Kirchhoff’s current and voltage laws

Alternating voltages and currents

Behaviour of R, L and C in AC circuits

Single-phase series AC circuit

Single-phase parallel AC circuit

phase systems and principles

Star and Delta connections

Relationships between line and phase voltages in Star-connected system

Relationships between line and phase voltages in Delta-connected system

Apparent power, real power and reactive power

Power in AC circuits

Practical: -

1) Use of Multimeters for measuring continuity, resistance, AC and DC voltages in

correct

And safe manner;

2) Use of IR Tester to measure insulation resistance

DAY 2

Unit 3 –Introduction to Power Distribution Equipment

General arrangement of voltages in Singapore

Types of earthing systems (TNS, TT) in Spore

Basic principle of Power Transformers

Constructional features

Transformer on no load and on load

Basic tests on Transformers

Classification of Switchgear

Basic functions of Switchgear

Types of Switchgear

Construction and arrangement of typical switchgear

The types and characteristics of Protective Devices

Single-phase AC motors

Basic principle of Three-phase induction motor

Constructional details

Rotating magnetic field

Synchronous speed and Slip speed

Starting and Speed control

No-load test and locked-rotor test

Practical:-

3) Inspect and operate LV switchgear including Air Circuit Breaker, MCCB Panel, DOL

starter panel, Star-delta starter panel

4) Inspect three-phase motors

5) Inspect instrument transformers

DAY 3

Unit 4 – Testing and Maintenance of Electrical Installation (Troubleshooting)

Testing and maintenance of switchgear

Testing and maintenance of motors

Testing and maintenance of transformers

Testing and maintenance of cables

Practical:-

6) Measure IR of circuit Breaker, motors;

7) Measure contact resistance of circuit Breaker primary contacts

DAY 4

Unit 5- Basic Electrical Circuit Design

Electrical symbols

Electrical single-line diagrams and layout drawings

Electrical schematic drawings

Cable sizing calculation

Fault Level calculation

DAY 5

Unit 5- Principles of Electrical Safety

Electrical Hazards

Electric Shock

Electric burns

Arc flash and arc blast

Explosions and fires

Prevention of electrical accidents

Practicing electrical safety

Basic First Aid

Permit-to-work

Safe isolation and requirements

PLEASE NOTE THAT THIS IS A PRELIMINARY OUTLINE. IT IS SUBJECT TO CHANGES.