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Electrical Faults: Causes, Analysis, Detection & Remedies

Coventry Academy -  Electrical Faults: Causes, Analysis, Detection & Remedies

Course Schedules

 20-24 May 2024
 26-30 Aug 2024
 13-17 Jan 2025
 19-23 May 2025

Training course overview

This Electrical Faults training course teaches practical electrical troubleshooting and is concerned with the calculation of fault currents in electrical power systems. Short-circuit currents are associated with large amounts of very destructive energy and therefore calculations must be made to ensure that the short-circuit ratings of equipment are adequate to cater for these high currents. Accurate assessment of these currents is also essential for determining the settings of the system protection devices.

This training course includes the preparation of the system for analysis, by manual calculation and by the use of computer analysis. Participants will be introduced to the various fault analysis software programs.

This training course will feature:

  • Identification of causes of electrical faults
  • Understanding three phase short circuit currents
  • Recognition of unsymmetrical faults in transformers
  • Representation of unsymmetrical faults in a power system
  • Manual and software assisted of fault currents

What are the goals?

By the end of this training course, participants will be able to:

  • Understand the various types of fault currents
  • Determine the causes of overcurrent and short circuit current
  • Explain differences between symmetrical and unsymmetrical faults
  • Analyse the common faults in a power system
  • Interpret manual calculation verses software aided fault current calculations

Who is this training course for?

This training course will benefit all levels of personnel in an electrical installation. It will enable them to identify the causes and apply analysis of electrical faults in a power system.

This training course is suitable to a wide range of technical professionals but will greatly benefit:

  • Electricians
  • Electrical supervisors
  • Plant electricians
  • Operations & maintenance engineers, supervisors & technicians
  • Maintenance technicians

How will this training course be presented?

This training course will utilise a variety of proven adult training techniques to ensure maximum understanding, comprehension and retention of the information presented. This includes presentation and discussion of case studies (with appropriate solutions), latest videos, technologies, and various commercial fault current analysis software.

Questions are encouraged throughout, particularly at the daily wrap up sessions. This provides opportunities for participants to discuss with the Presenter specific issues and, if possible, find appropriate solutions. Specific goals of each participant will be discussed to ensure that their needs are fulfilled whenever practicable.

Course Outline

Day One: Introduction to Fault Analysis
  • Source of fault current in an electrical installation
  • Common fault statistics of electrical equipment
  • Short-circuit rating of equipment
  • Selecting the correct switchgear rating for fault duties
  • Overview of per-unit system and one line diagrams
  • Sources of impedance data for all items of plant
Day Two: Three-phase Short-circuit Currents
  • Review - summary - discussion
  • Manual calculation of three-phase short-circuit current
  • Industrial systems and fault current analysis
  • Tutorial - based on attendees plant
  • Cables subjected to short-circuit currents
  • Compliance with regulations
Day Three: Unsymmetrical Fault Conditions
  • Overview of symmetrical components and faults
  • Consideration of various fault types
  • Sequence networks
  • Consideration of phase shift in two-winding transformers
  • Consideration of earth impedance
  • Consideration of three-winding transformers
Day Four: Representation of Unsymmetrical Faults in Power Systems
  • Review - summary - discussion
  • Fault diagrams of electrical equipment
  • Interconnected sequence networks
  • Special considerations with reference to limitation of earth fault current
  • Demonstration examples based on industrial power systems
  • Introduction to fault current analysis software
Day Five: Computer based Calculation of Faults
  • Introduction to a scaled down fault analysis software
  • Common network faults
  • Industrial standards namely ANSI, NEC & NFPA 70 compliance
  • Case studies of faults in a high voltage network
  • Case study of faults in a low voltage network
  • Q&A and wrap up session

The certificate

  • Coventry Academy Certificate of Attendance will be provided to delegates who attend and complete the course

Coventry Academy
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