Fault Finding on Electrical Power Systems (North East)

Course Outline

Day 1

Introduction
Stage 1 - Fundamentals
Revision and Fundamental electrical principles. AC & DC
Use of multi-meters to measure, volts, resistance, current and continuity.
Coils, magnets and transformers.
Simple electricity generation AC single phase & DC.
Basic electrical circuitry and protective devices. (Fuses)
Use of voltage detectors and proving units.

Day 2

Stage Two - HV Principles
Generation of three-phase supply.
Generator peripherals. (Earth Resistor, Generator Transformer et.)
Generation, transmission and distribution.
LV station electrical supplies.
Induction motor. Principles of operation, construction and testing.
Three phase electric circuits and protection
Potential energy levels, faults, hazards and risks.
Electrical Safety, electric shock.
Methods of reducing risk. (RCD’s, Centre tapped supplies etc.)

Day 3

Stage Three - Motor starting methods. (DOL. Assisted Start, Soft start.)
Design criteria for direct on line starting of induction motors.
Reading schematic and wiring diagrams.
Construction of an LV motor starter. (Candidate to wire a starter.)

Day 4

Stage Three - Motor protection. (Short circuit, Under voltage, Overload and Balance.)
Motor protection relays and trips.
Contactors, isolators, circuit breakers, relays, timers and PLCs.
Fault finding techniques.

Day 5

Stage Four
HV station supplies. (General layout of traditional and CCGT.)
Differentiation between RADIAL and FEEDER circuits.
Examination of different types of switchgear.
Differentiation between HV contactors and circuit breakers.

Course Review and Feedback