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1 EE179: Electrical Fault Analysis: Causes, Detection & Remedies EE179 Rev.001 CMCT COURSE OUTLINE Page 1 of 5

2 Training Description: 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. Training Objective: By the end of the training, 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 Training Designed for: This course is intended for Electrical Engineers, those who are involved in Commissioning, Start up, Operation, and Protection of Electric Power Networks. EE179 Rev.001 CMCT COURSE OUTLINE Page 2 of 5

3 Training Program: DAY ONE: PRE-TEST Introduction Module (01): Introduction to Fault Analysis Source of Fault Current Fault Statistics Short-Circuit Rating of Equipment Correct Switchgear Rating for Fault Duties Per-Unit System One-Line Diagrams Module (02): Three Phase Short Circuit Currents Calculation of Three Phase Short-Circuit Current Circuit Reduction Techniques Electricity Supply Systems Tutorial - based on Attendees Plant Cables Subjected to Short-Circuit Currents Compliance with Regulations DAY TWO: Module (03): Unsymmetrical Fault Conditions Overview of Symmetrical Components Consideration of various Fault Types Sequence Networks Consideration of Phase Shift in Transformers Consideration of Earth Impedance Consideration of Three-winding Transformers Module (04): Representation of Unsymmetrical Faults Fault Diagrams Interconnected Sequence Networks Reference to limitation of Earth Fault Current Demonstration based on Power Systems DAY THREE: Module (05): Earthing and Faults Current Level Selection of Grounding Method / System Understanding Ground Resistance Ground Resistance Value & Measurements Effect of Type of Earthing on Fault Current Level Module (06): Transmission Lines and Feeders Transmission Lines Faults Line to Ground Faults Phase Faults EE179 Rev.001 CMCT COURSE OUTLINE Page 3 of 5

4 Transmission Line Protection Over Current & Earth Faults Differential Relays Successive Reclosing Method Case Study DAY FOUR: Module (07): Short Circuit Calculations Three Phase Faults Line to Line Faults Line to Line to Ground Faults Line to Ground Faults Line to ground Faults through Impedance Equivalents System Impedance Current Limiting Inductors Short Circuit Level Effect of Induction Machines on Short Circuit Level CB Rupture Capacity Example of Short Circuit Calculations Module (08): Transformers Faults Analysis Types of Faults Through Faults Internal Faults Phase Faults Earth Faults Gas Actuated Relays Buchholz Relays Electrical Relays, Differential, Restricted Earth Transformer with Ground Neutral DAY FIVE: Module (09): Schematic Drawing Fault Analysis Keys of Electrical Schematic Drawings Principles of Different Auxiliary Relays Main Components of the Schematic Drawings Fault Analysis by Using the Schematic Drawings Case Study of Transformers Fault Analysis Case Study of circuit breaker fault Analysis Case Study of GIS System Fault Analysis Case Study MCC and Load Centers Fault Analysis Course Conclusion POST-TEST and EVALUATION EE179 Rev.001 CMCT COURSE OUTLINE Page 4 of 5

5 Training Requirement: Hand s on practical sessions, equipment and software will be applied during the course if required and as per the client s request. Training Methodology: This interactive training course includes the following training methodologies as a percentage of the total tuition hours:- 30% Lectures, Concepts, Role Play 30% Workshops & Work Presentations, Techniques 20% Based on Case Studies & Practical Exercises 20% Videos, Software & General Discussions Pre and Post Test Training Certificate(s): Internationally recognized certificate(s) will be issued to each participant who completed the course. Training Fees: As per the course location - This rate includes participant s manual, hand-outs, buffet lunch, coffee/tea on arrival, morning & afternoon of each day. Training Timings: Daily Timings: 07:45-08:00 Morning Coffee / Tea 08:00-10:00 First Session 10:00-10:20 Recess (Coffee/Tea/Snacks) 10:20-12:20 Second Session 12:20-13:30 Recess (Prayer Break & Lunch) 13:30-15:00 Last Session For training registrations or in-house enquiries, please contact: Aisha Relativo: aisha@cmc-me.com Tel.: or Mob.: Training & Career Development Department EE179 Rev.001 CMCT COURSE OUTLINE Page 5 of 5