People often assume that any object grounded , howevery crudely, can be safely touched...

If the geometry, location of ground electrodes, local soil characteristics and other factors contribute to an execive potencial at the earth surface, the grounding system may be inadequate...  


 
 
SUBSTATION EARTHING & LIGHTNING PROTECTION                
 
 
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Benefits include:
  • Comprehensive course documentation
  • Certificate of attendance
  • Learning from an internationally & locally recognised expert
    		•

     

    Learning outcomes:

  • Identify parameters critical for designing an effective substation earthing and lightning protection systems
  • Explore different earthing designs, principal design considerations and methods of lightning protection
  • Learn how to evaluate existing earthing systems and how to choose appropriate earthing for various types of soil and soil resistivity conditions
  • Discuss case studies and typical earthing problems in an interactive workshop environment
    		•

     

    Day 1
    Basic problem in earthing

  • Conditions of danger
  • Effects of electric current on human body
  • Engineering goal
    Criteria of permissible potential difference
  • Critical parameters
  • Permissible body current limit
  • Step and Touch voltage criteria
    Soil and earthing

    Day 2
    Principal design considerations

  • Basic aspects of grid design
  • Evaluation of ground resistance
  • Conductor sizing
  • Determination of maximum grid current
  • Design in difficult conditions
    Designing an earthing system
  • Design criteria
  • Design procedure
  • Preliminary design
  • Refinement of preliminary design
    Lightning protection
    Case study workshop
  • Indications of "good" and "bad" design
  • Typical pitfalls in earthing design

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    Who should attend?
    Consultants, application engineers, design engineers and electrical engineers from large industrial plants or municipal distribution systems will find this course very beneficial. Insurance agents would gain knowledge that would enable them to better evaluate the risks involved.

     

    Course Synopsis:
    Inadequate earthing causes unexplained system outages, but if it remains unchecked and non-rectified it may cause serious or irreparable damage to the equipment and plant, and maybe even loss of life. Even the best-designed earthing systems may become unsafe through deterioration of material and changes to the power grid.

    An installation must have a well-designed and reliable earthing and lightning protection systems to provide a reasonable protection to the equipment and a safe environment for working personnel.

    This course provides basic understanding of the issues pertinent to safe earthing practices and designing a safe earthing and adequate lightning protection systems. It also advises, through various case studies, how to avoid typical design mistakes and how to evaluate the existing protection systems.

     

    Course Trainer:
    Aleksandar Milin
    BSc (Hon) Electrical Engineer
    Member of IET (UK) and IEEE(US)
    Power Engineering Consultant
    Managing Director - MATREX

     

    		 
       
     

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