Engineering in the Arctic

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IT IS FINALLY HERE! After 16 long years, the next edition of IEEE 1584 was finally published. In this two-day arc flash training class, Jim Phillips, P.E., introduces the 2018 edition of the IEEE 1584. Jim discusses the changes, 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.

Speaker(s): Jim Phillips,

Agenda:

8:00 am to 8:30 am Check in, Hand out materials 8:30 am to 11:30 am Training (breaks will be scheduled during the Class 11:30 am to 12:15 pm Lunch 12:15 pm to 5:00 pm Training (with breaks scheduled

**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, 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

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Location:

Bldg: Coast International Inn

3450 Aviation Drive,

Anchorage, Alaska