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202 Power Systems Application 2.5-Day Training

Arc Flash Evaluation


This advanced course involves hands-on exercises based on real world projects, where you'll learn in-depth and practical knowledge of the principles of proper and economical Arc Flash Risk analysis through the use of the SKM software. Hands-on lab exercises provided throughout the course are designed to reinforce lecture content, enabling students to gain practical experience designing and analyzing power systems with the mindset of mitigating dangerous Arc Flash conditions. While this course covers the Arc Flash evaluation module in detail and functions, it also explores the real-world realities that apply to the every use of the SKM software. Emphasis is placed on helping you develop skills and knowledge in technical areas that can have practical value in your projects!

This course is also structured to expose intermediate and experienced users to robust and powerful features that will enhance productivity and leave students saying “I didn’t know I could do that!” Learn advanced SKM features quickly with a fluid workflow and best practices!

Satisfy OSHA requirements and steer clear of significant fines by protecting employee safety. Avoid costly legal & medical expenses, downtime, expensive equipment replacements, and insurance increases. Learn what is needed to develop a successful Arc Flash program and comply with sections of OSHA mandated NFPA 70E!


  • Scope of work:  A scope of work that will satisfy the requirements of the NFPA 70E standard.
  • Scope of survey:  Detailed explanations and suggestions on how to perform a data survey that balances both the requirement of the NFPA 70E standard and the cost of the data collection process.  How to proceed when utility information is not available, when other component data is not available or not accessible, or when library information is missing.  Determine appropriate tolerances when data is not precisely known.
  • Modeling Components:  How to model different component of the electrical distribution system (such as busducts) to obtain technical accuracy.
  • Data Validating Techniques:  Discuss input validating methodology for a complete system model to prevent errors in calculations due to bad data.
  • Choosing Proper Options:  Before performing an Arc Flash study, many options should be considered.  Review all options that can cause a significant difference in the Arc Flash results and provide suggestions on how to select various options.
  • DC Calculations:  Understand and calculate incident energies for DC systems.  
  • Output of Results:  Results of the Arc Flash Risk Analysis can be shown in different document types.  Explore all of types and provide formatting suggestions to obtain useful and visually appealing documents.  Learn how to integrate Equipment Evaluation results in the Arc Flash Risk documents.  Discuss the new NFPA 70E personal protection equipment requirements and how to include them in labels and other output reports.
  • Mitigation:  Explore the many practical mitigation techniques to reduce high levels of incident energy.  Suggestions on how to optimize mitigation, protection, and coordination will be explored.
  • Labeling:  Discuss formating and printing arc flash labels.  Methodology on how to affix labels to electric equipment.


  • Basic computer skills
  • SKM Power*Tools Standard 5-Day Training (101/102) OR working knowledge of SKM PTW Software
    This class is not recommended for beginners.  Instructor will not delay the course answering basic questions regarding the use of the PTW software not related to the Arc Flash study module.
  • Students are urged to review:
    • IEEE 1584 2002/2004a, Guide for Performing Arc Flash Hazard Analysis
    • NFPA 70E Standard for Electrical Safety in the Workplace

Course Description:

This course covers the Arc Flash evaluation module in detail and functions. The course involves hands-on lab exercises based on real world projects, where you’ll learn in-depth and practical knowledge of the principles of proper and economical Arc Flash Risk analysis through the use of the SKM software. Advanced SKM features will be demonstrated to provide maximum productivity for experienced users. Students will earn 2.0 CEUs for this 3-day course.


Typical Industrial and Commercial Power System Example

  • Review of distribution system analysis topics including short-circuit and arc flash risk analysis
  • Discussion of compliance with various standards and requirements
  • Data gathering and input data requirement
  • Discussion of considerations when selecting equipment
  • Output data requirement
  • Examination and interpretation of PTW study results and potential problem
    areas in the power system
  • Discussion of methods and procedures on completing a typical study
  • Discussion of arc flash risk analysis results and methods used to reduce
    the risk to below 40 cal/cm2
  • Discussion of final presentation of study reports

Hands-On - Analysis of a Sample Electrical Distribution System in PTW:

  • Review various Arc Flash situations and how to study and approach them.
  • Several Arc Flash cases including single source, multiple sources (utility, generators, motors), mis-coordination, differential functions, current limiting fuses, worst case conditions, and more.
  • IEEE 1584 standards, NEC and OSHA requirements
  • IEEE 1584 calculation procedures
  • Data gathering, data input and system modeling Issues related to energy accumulation and multiple contributions
  • Issues related to Induction Motor and Synchronous Machine decays
  • Relationship between Short Circuit results, Protective Device Coordination, and Arc Flash studies
  • Bus Report, Line side and Load Side report options
  • Examples and interpretation of PTW Arc Flash results
  • Interpretation of PTW Arc Flash results and applying various techniques to reduce arc flash risk to below 40 cal/cm2
  • Discussion of issues related to Selective Coordination
  • Discussion of Protection and Coordination issues for Arc Flash studies
  • Arc Flash Labeling Requirements, Personal Protection Equipment
  • Arc Flash Labels, Work Permits, and legal issues

Target Audience:

This course is intended for electric power engineers responsible for the design and analysis of three phase electrical distribution systems. No previous electrical distribution system analysis experience is required.  However, it is HIGHLY recommended that courses 101 and 102 have been previously completed or have several years of PTW experience.
Course 202 2017 Power Systems Application - Protection & Coordination 2.5-Day Training
Course Dates & Locations March 22, 23, 24 in Torrance, CA
June 14, 15, 16 in Houston, TX
November 1, 2, 3 in Pittsburgh, PA
Course Hours 1:00 PM to 5:00 PM Wednesday
8:00 AM to 5:00 PM Thursday and Friday
Course Fees $1,395 for 202 Arc Flash Evaluation 2.5-Day. Does not include hotel or travel costs.
$2,590 (Save $200) for 201 & 202, 5-Day. Does not include hotel or travel costs.
Registration Fees Include All course materials, Continental breakfast each day from 7:30 to 8:00 AM, Lunch and refreshments during breaks, and an IEEE Certificate of Completion
Training Equipment SKM will provide a computer with the software installed for the Torrance location only when requested. However, students are highly encouraged to bring their own laptop computers. SKM will provide the latest version of the PTW software prior to the class for installation. License key will be provided on the first day of the course.

For Torrance DoubleTree Hotel reservations, call 1-800-445-8667 and be sure to ask for the SKM corporate rate of $159 per night.

Please wait for enrollment confirmation prior to booking flight and hotel reservations as classes often become full.  Enrollment is not guaranteed before confirmation.