This training course will benefit all levels of personnel in an electrical installation. It will enable them to identify the causes and apply the analysis of electrical faults in a power system.
This training course is suitable for a wide range of technical professionals but will greatly benefit:
This Electrical Faults training course in Dubai 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 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
Objectives
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 the differences between symmetrical and unsymmetrical faults
Analyze the common faults in a power system
Interpret manual calculation versus software aided fault current calculations
Methodology
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 the equipment
Selecting the correct switchgear rating for fault duties
Overview of the 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
