Electrical Faults: Causes, Analysis, Detection and Remedies

This workshop teaches 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 calculation must be made to ensure that the short circuit rations of equipment are adequate to cater for these high currents.

Content:

 Fault Analysis

• Source of fault current
• Common fault
• Short-circuit rating of equipment
• Selecting the correct switchgear rating
• Overview of per-unit system

Three Phases short – circuit currents

• Manual calculation of three phase short circuit current
• Industrial system and fault current analysis ‘cable subjected to short circuit currents
• Compliance with reputation

Unsymmetrical fault conditions

• Overview of symmetrical components and faults
• Consideration of various fault type
• Sequence networks
• Phase shift in two winding transformers
• Earth impedance
• Three winding transformers

Representation of Unsymmetrical faults in power system

• Fault diagram of electrical equipment
• Interconnected sequence networks
• Fault current analysis software

Computer based calculation of faults

• Common network faults
• Industrial standard namely ANSI, NEC and NFPA to compliance

For Whom:

Works, Services and Maintenance Personnel

Training Methodology

The training methodology combines lectures, discussions, group exercises and illustrations. Participants will gain both theoretical and practical knowledge of the topics. The emphasis is on the practical application of the topics and as a result participant will go back to the workplace with both the ability and the confidence to apply the techniques learned to their duties.