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Electrical Fault Analysis Causes, Detection & Remedies
Copyright © 2016. APEX FZ LLC. All Rights Reserved www.apex-dubai.com
It is essential to know the Short Circuit Current and KVA that the system will carry under Different Fault Conditions
and at Different Points in the System. The faults may be Single Line to Ground, Double Line to Ground, Three Line
Fault or Line to Line Fault. Selection of Circuit Breakers, Protective Devices and Operation Strategies are mainly
required information about the Short Circuit Current.
Moreover Fault Analysis is essential in order to have safety operation of the Power Systems and to know the fault
causes. It is important for Engineers and Technicians to be aware by fault causes, fault detection, fault protection and
fault analysis. This course is designed to provides the participants with complete knowledge about fault calculations,
fault detection and protective relays used for power systems and networks. The course is concerned with the
calculation of fault currents in practical 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. In addition, an accurate assessment of these currents is
also essential for determining the settings of the system protection devices.
Electrical systems are subjected to several external & internal influences like Weather Conditions, Lightning
Phenomenon, Pollution, Insulation Failure, Temperature Rise, etc., these influences cause abnormal Operational
Condition, which could lead to voltage and frequency variations and feeder trips, brown out or Black Out of Electrical
system, and sometimes, may lead to equipment damage or System Failure.
After completing this course, participants will be able to:
Understand the basic theory of Three Phase Power System
under Balanced and Unbalanced Conditions.
Learn the Per-unit System and Analytical Circuit based
Techniques to calculate Industrial Power Systems for Faults.
Learn Advanced Engineering Mathematical Software that can
be used to make difficult and complicated Calculations an
Easy Task.
Understand Balanced Three-phase Faults and unbalanced
Faults and their Analysis using Symmetrical Components.
Apply impedance reduction Techniques and positive, negative
and zero sequence circuits and their interconnection for faults.
Participate and earn valuable learning through Case studies
and industrial standards for Medium and Low Voltage
Networks and know what are types of different of Faults and
how faults are calculated.
The course is designed for Electrical
Engineers those involved in Commissioning,
Start up, Operation, and Protection of
Electric Power Networks.
Course Overview:
Course Objectives: Who Should Attend?
The Presentation, supplied documents,
and workshop exercises of the course
are in English however, based
on the trainees’ desires, oral presentation or
discussion can be Bilingual
(English and Arabic).
Course Language:
www.apex-dubai.com Copyright © 2016. APEX FZ LLC. All Rights Reserved
Electrical Fault Analysis Causes, Detection & Remedies
Module (01) Introduction to Fault Analysis
1.1 Source of Fault Current
1.2 Fault Statistics
1.3 Short-Circuit Rating of Equipment
1.4 Correct Switchgear Rating for Fault Duties
1.5 Per-Unit System
1.6 One-Line Diagrams
Module (02) Three Phase Short Circuit Currents
2.1 Calculation of Three Phase Short-Circuit Current
2.2 Circuit Reduction Techniques
2.3 Electricity Supply Systems
2.4 Tutorial - based on Attendees Plant
2.5 Cables Subjected to Short-Circuit Currents
2.6 Compliance with Regulations
Module (03) Unsymmetrical Fault Conditions
3.1 Overview of Symmetrical Components
3.2 Consideration of various Fault Types
3.3 Sequence Networks
3.4 Consideration of Phase Shift in Transformers
3.5 Consideration of Earth Impedance
3.6 Consideration of Three-winding Transformers
Module (04) Representation of Unsymmetrical Faults
4.1 Fault Diagrams
4.2 Interconnected Sequence Networks
4.3 Reference to limitation of Earth Fault Current
4.4 Demonstration based on Power Systems
Module (05) Earthing and Faults Current Level
5.1 Selection of Grounding Method / System
5.2 Understanding Ground Resistance
5.3 Ground Resistance Value & Measurements
5.4 Effect of Type of Earthing on Fault Current Level
Module (06) Transmission Lines and Feeders
6.1 Transmission Lines Faults
6.2 Line to Ground Faults
6.3 Phase Faults
6.4 Transmission Line Protection
6.5 Over Current & Earth Faults
6.6 Differential Relays
6.7 Successive Reclosing Method
6.8 Case Study
Module (07) Short Circuit Calculations
7.1 Three Phase Faults
7.2 Line to Line Faults
7.3 Line to Line to Ground Faults
7.4 Line to Ground Faults
7.5 Line to ground Faults through Impedance
7.6 Equivalents System Impedance
7.7 Current Limiting Inductors
7.8 Short Circuit Level
7.9 Effect of Induction Machines on Short Circuit Level
7.10 CB Rupture Capacity
7.11 Example of Short Circuit Calculations
Module (08) Transformers Faults Analysis
8.1 Types of Faults
8.2 Through Faults
8.3 Internal Faults
8.4 Phase Faults
8.5 Earth Faults
8.6 Gas Actuated Relays
8.7 Buchholz Relays
8.8 Electrical Relays, Differential, Restricted Earth
8.9 Transformer with Ground Neutral
Module (09) Schematic Drawing Fault Analysis
9.1 Keys of Electrical Schematic Drawings
9.2 Principles of Different Auxiliary Relays
9.3 Main Components of the Schematic Drawings
9.4 Fault Analysis by Using the Schematic Drawings
9.5 Case Study of Transformers Fault Analysis
9.6 Case Study of circuit breaker fault Analysis
9.7 Case Study of GIS System Fault Analysis
9.8 Case Study MCC and Load Centers Fault Analysis
Course Summary & Conclusion
Course Contents:
Copyright © 2016. APEX FZ LLC. All Rights Reserved www.apex-dubai.com
Electrical Fault Analysis Causes, Detection & Remedies
A confirmation will be sent upon your registration.
Note that full payment must be made prior to the
event. Only those delegates who have paid in full will
be admitted to the event. All payments should be to
APEX Account:
Bank Name : HSBC Bank Middle East limited,
Branch : Jebel Ali Branch, Dubai, UAE
IBAN No : AE020200000035626472101
Swift Code : BBMEAEAD
Closing of Registration will be two (2) weeks prior to
the course date.
APEX can assist and provide corporate rates for the
hotel accommodation.
Course fees will cover Course Materials, Certificate of
Participation, Coffee Breaks and Lunch.
In-House course is also available upon request and
can be customized as per client’s needs.
If you are unable to attend the course you may
send a substitute delegate.
Cancellation should be made 15 days prior to the
course conduction. Failure to cancel within 10 days
will be to pay the course fee in full amount.
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Tel : +971 4 445 8567
Fax : +971 4 454 2910
Email : [email protected]
Website : www.apex-dubai.com
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