How to Perform an Arc Flash Study - 2018 IEEE 1584 COMING SOON!

COMING SOON! In this 16 hour course, Jim Phillips, P.E., discusses the changes to the 2018 Edition of IEEE 1584 and then walks you through the calculations with his new worksheets and how the 2018 edition is is used in arc flash studies.

The 2018 edition of IEEE 1584 is a major game changer. Almost everything has changed since the original edition was introduced in 2002.

Highlights of the next edition include:

  • Five different electrode configurations to enable more detailed modeling
  • Vertical electrodes in a metal box/enclosure – VCB (also in 2002 Edition)
  • Vertical electrodes terminated in an insulating barrier in a metal box/enclosure – VCCB
  • Horizontal electrodes in a metal box/enclosure – HCB
  • Vertical electrodes in open air – VOA (also in 2002 Edition)
  • Horizontal electrodes in open air – HOA
  • More choices for enclosure types and sizes
  • Enclosure correction factor calculation to adjust for specific enclosure size
  • The effect of grounding has been eliminated
  • An arcing current variation factor calculation replaces the 85% factor
  • Calculations performed at 1 of 3 voltage levels with interpolation to actual voltage
  • The 125 kVA transformer exception was eliminated

Each calculation is performed in 2 steps which includes an initial calculation based on one of three voltage levels and a second calculation interpolating to the specific system voltage.  The 125 kVA “exception” was replaced. Learn why and what has replaced it. What about the 2 second rule? Jim discusses all this and much more.

Jim is not just another trainer reading a script.  For almost four decades, Jim has been helping tens of thousands of people around the world understand electrical power system design, analysis and safety. Having taught over 2500 classes during his career to people from all seven continents (Yes Antarctica is included!), he has developed a reputation for being one of the best trainers and public speakers in the electric power industry.

Jim literally wrote the book about arc flash studies with “How Guide to Perform Arc Flash Hazard Calculations” and he is a regular contributor to NECA’s multi-award winning Electrical Contractor Magazine. He has a broad background with industrial, commercial and utility power systems as well as serving as Vice-Chair of IEEE 1584, International Chair of IEC TC78, Technical Committee Member NFPA 70E and many other codes and standards that provide him with a unique perspective.

When asked questions about some topics, his explanations often run along the line of “Well, here’s what happened in the lab when we blew it up…” or “Here is why it was written in a particular way”

Read Jim’s article outlining the major changes to IEEE 1584 [Read Article]

 

Agenda – 2018 IEEE 1584 Arc Flash Training Class

INTRODUCTION TO ARC FLASH STUDIES

ARC FLASH AND OTHER ELECTRICAL HAZARDS

Physiological Effects, Electrocution, Tissue Damage, Internal Organ Damage, Burns Fibrillation, “Curable” 2nd Degree Burn

CODES AND STANDARDS

OSHA 29 CFR – Part 1910, Subpart S, NFPA 70, National Electrical Code®, 2018 NFPA 70E, (CSA Z462 for Canada Classes) Standard for Electrical Safety in the Workplace, 2018 IEEE Standard 1584™, IEEE Guide for Performing Arc Flash Hazard Calculations, Legal Requirements, Liability

 2018 EDITION – IEEE 1584 – DEVELOPMENT

History of the Development of the 2018 IEEE 1584, IEEE/NFPA Collaboration, Working Group and Project Team, Almost 2000 New Arc Flash Tests, What Took So Long? Range of Applicability, Data Requirements, Study Process, Table of Results for the Arc Flash Study Report.

ARC FLASH CIRCUIT DYNAMICS 

Arcing Faults vs. Bolted Faults, Effect of Current on Overcurrent Device Clearing Time, Current Limitation, Effect of Transformer Size and Source Strength

MODELING THE ARC FLASH STUDY

One-Line, Data, System Configuration, Multiple Sources

ELECTRIC UTILITY COMPANY DATA

What data should be requested, minimum and maximum fault current, why not to use infinite bus calculations, what if the data can not be obtained?

OVERVIEW OF CHANGES TO THE 2018 IEEE 1584

Introduction and Summary of the Major Changes

ELECTRODE CONFIGURATIONS

VCB – Vertical electrodes in a metal box/enclosure, VCCB Vertical electrodes terminated in an insulating barrier in a metal box/enclosure, HCB – Horizontal electrodes in a metal box/enclosure, VOA – Vertical electrodes in open air, HOA – Horizontal electrodes in open air

ARCING SHORT CIRCUIT CURRENT CALCULATIONS– LOW VOLTAGE

Calculation of Intermediate Average Arcing Current, Calculation Final Arcing Current – Interpolate for Voltage, Coefficients, Data

ENCLOSURE SIZES AND TYPES

New Enclosures, Sizes and Types, Gap Distances

ENCLOSURE SIZE CORRECTION FACTOR CALCULATIONS

Determining Correction Factor for Enclosure Size. Shallow vs. Typical Enclosure

WORKING DISTANCE

Selection of Working Distance for Incident Energy Calculations

ARC DURATION

Using Time Current Curves, 2 Second Cut Off, Arc Sustainability, 125 kVA Transformer Exception Deletion – Why?

INCIDENT ENERGY CALCULATIONS – LOW VOLTAGE

Calculation of Intermediate Incident Energy, Calculation of Final Incident Energy – Interpolate for Voltage, Coefficients, Data

ARC FLASH BOUNDARY CALCULATIONS – LOW VOLTAGE

Calculation of Intermediate Arc Flash Boundary, Calculation of Final Arc Flash Boundary – Interpolate for Voltage, Coefficients, Data

ARCING CURRENT VARIATION FACTOR

Calculation the Arcing Current Variation Factor for Minimum Arcing Current, Replacement for 85% factor, Applies to all Voltages

ARCING SHORT CIRCUIT CURRENT CALCULATIONS – MEDIUM VOLTAGE

Calculation of Intermediate Average Arcing Current, Calculation Final Arcing Current – Interpolate for Voltage, Coefficients, Data

INCIDENT ENERGY CALCULATIONS – MEDIUM VOLTAGE

Calculation of Intermediate Incident Energy, Calculation of Final Incident Energy – Interpolate for Voltage, Coefficients, Data

ARC FLASH BOUNDARY CALCULATIONS – MEDIUM VOLTAGE

Calculation of Intermediate Arc Flash Boundary, Calculation of Final Arc Flash Boundary – Interpolate for Voltage, Coefficients, Data

DC ARC FLASH CALCULATIONS  

V-I Characteristics, DC Arc Resistance Calculations, DC Incident Energy Calculations, Box vs. Open Arc Calculations, Calculation Worksheets, Problem Solving

COMPARISON OF CALCULATION METHODS AND CONFIGURATIONS

Calculation Results from 2002 IEEE 1584 Compared to 2018 IEEE 1584, Comparison or Results for VCB, VCCB, HCB

MODELING TIPS

Selection of Electrode Configuration, Enclosure Size, Gap Distances

OTHER HAZARD MEASUREMENTS

Light, Blast Pressure, Sound Pressure

DETERMINING PPE REQUIREMENTS FROM INCIDENT ENERGY CALCULATIONS

Using calculated incident energy to determine PPE requirements. Simplifying the Selection

 ARC FLASH WARNING LABELS

Jim’s Simplification for Arc Flash Labels to Reduce or Eliminate the Need to Re-Label, Minimum Requirements, Label Locations, ANSI Z535 Requirements, Incident Energy vs. Site Specific PPE vs. Arc Rating, Signal Words and Colors

QUESTIONS ABOUT THIS CLASS OR TO HOLD IT AT YOUR LOCATION:

CONTACT US AT 800.874.8883

Receive Answers to These Questions and More:

 How do I organize a study?

 What equipment really needs labeled?

 Where do I obtain the required data?

 How much information is really required on the arc flash label?

 Do I need all data such as conductor lengths?

 How do I calculate AC incident energy, arcing current & arc flash boundary?

 What is the difference between low voltage and medium voltage calculations?

 How do I calculate DC incident energy from an arc flash?

 How do I calculate DC arc resistance and what is a V-I characteristic?

 How accurate are the IEEE 1584 calculations?

 Why do I also have to analyze arc flash during for minimum fault currents?

 What very important question do I ask the electric utility?

 Are time current curves a reliable way to determine arc flash clearing time?

 What if I have a low arcing current that causes a long clearing time?

 Why was the 125 kVA 208V exclusion deleted?

 Is the “2 second cut off” appropriate?

 How long can an arc sustain itself? – discussion of recent test data.

 Why do I use a comparison of 100% and the minimum arcing current?

 Does the type of equipment make a difference in the calculations?

 What changed regarding grounded vs. ungrounded systems?

 What about Arc Blast, Light and Sound Pressure?

 How do I include motor contribution to the calculations?

 How can current limiting devices reduce the incident energy?

 Why use remote operation, arc resistant equipment, and maintenance switches?

 Why is selecting the correct working distance an important part of the calculations?

Lessons

Instructor

About Jim Phillips

Jim Phillips

Instructor

• Founder: Brainfiller.com Electrical Power, Safety and Arc Flash Training • Associate Director: Electrical Safety UK Ltd. - Rotherham, England • Contributing Editor: Electrical Contractor Magazine • Author: Complete Guide to Performing an Arc Flash Hazard Study • B.S. Electrical Engineering • Registered Professional Engineer • Four Decades of Industrial and Utility Experience • Vice Chair: IEEE 1584 - IEEE Guide for Performing Arc Flash Hazard Calculations • TC Member: NFPA 70E - Electrical Safety in the Workplace • International Chair: IEC TC 78 Live Working Standards • Steering Committee – IEEE/NFPA Arc Flash Collaborative Research Project. E-mail: jphillips@brainfiller.com

  • format_list_numbered
    CEU 1.6/PDH 16
help Get Help