IEEE 1584 2018

$414.92

IEEE 1584-2018: IEEE Guide for Performing Arc-Flash Hazard Calculations

Published By	Publication Date	Number of Pages
IEEE	2018	141

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Description

Scope This guide provides models and an analytical process to enable calculation of the predicted incident thermal energy and the arc-flash boundary. The process covers the collection of field data if applicable, consideration of power system operating scenarios, and calculation parameters. Applications include electrical equipment and conductors for three-phase alternating current (ac) voltages from 208 V to 15 kV. Calculations for single-phase ac systems and direct current (dc) systems are not a part of this guide, but some guidance and references are provided for those applications. Recommendations for personal protective equipment (PPE) to mitigate arc-flash hazards are not included in this guide. Purpose The purpose of the guide is to enable qualified person(s) to analyze power systems for the purpose of calculating the incident energy to which employees could be exposed during operations and maintenance work. Contractors and facility owners can use this information to help provide appropriate protection for employees in accordance with the requirements of applicable electrical workplace safety standards. Abstract Revision Standard – Active. This guide provides mathematical models for designers and facility operators to apply in determining the arc-flash hazard distance and the incident energy to which workers could be exposed during their work on or near electrical equipment.

PDF Catalog

PDF Pages	PDF Title
1	IEEE Std 1584™-2018 Front cover
2	Title page
4	Important Notices and Disclaimers Concerning IEEE Standards Documents
7	Participants
10	Introduction
11	Contents
13	List of Figures
16	List of Tables
18	1. Overview 1.1 Scope 1.2 Purpose 2. Normative references
19	3. Definitions, acronyms, and abbreviations 3.1 Definitions
21	3.2 Acronyms and abbreviations 4. Model for incident energy calculations 4.1 General 4.2 Range of model
22	4.3 Model application overview
23	4.4 Intermediate average arcing currents
25	4.5 Arcing current variation correction factor
26	4.6 Intermediate incident energy (E)
28	4.7 Intermediate arc-flash boundary (AFB)
29	4.8 Enclosure size correction factor
32	4.9 Determination of Iarc, E, and AFB (600 V < Voc ≤ 15 000 V)
34	4.10 Determination of Iarc, E, and AFB (Voc ≤ 600 V)
35	4.11 Single-phase systems 4.12 DC systems 5. Applying the model 6. Analysis process 6.1 General overview
36	6.2 Step 1: Collect the system and installation data
37	6.3 Step 2: Determine the system modes of operation 6.4 Step 3: Determine the bolted fault currents
38	6.5 Step 4: Determine typical gap and enclosure size based upon system voltages and classes of equipment
39	6.6 Step 5: Determine the equipment electrode configuration
41	6.7 Step 6: Determine the working distances 6.8 Step 7: Calculation of arcing current 6.9 Step 8: Determine the arc duration
43	6.10 Step 9: Calculate the incident energy
44	6.11 Step 10: Determine the arc-flash boundary for all equipment 6.12 Cautions and disclaimers
45	7. Background on the arc-flash hazard 7.1 Early papers
46	7.2 Additional references
47	Annex A (informative) Bibliography
54	Annex B (informative) Units of measure B.1 IEEE Policy 9.16 B.2 Incident energy
55	Annex C (informative) Determination of incident energy for different equipment types C.1 Low-voltage drawout switchgear C.2 Low-voltage motor control center
56	C.3 NEMA 600 V panelboard C.4 Enclosed switch
58	Annex D (informative) Sample incident energy calculations D.1 Sample arc-flash incident energy calculation for a medium-voltage system
69	D.2 Sample arc-flash incident energy calculation for a low-voltage system
76	Annex E (informative) Arc flash E.1 What is an arc flash? Where and when is it likely to occur? E.2 Review of incidents in the U.S. E.3 Analysis of an arc flash in equipment
77	Annex F (informative) Laboratory test programs F.1 General
78	F.2 Overview of test programs
82	F.3 Physical test methodology
83	Annex G (informative) Development of model G.1 Summary G.2 Configurations of the testing
85	G.3 Summary of conclusions G.4 Observations from test results
87	G.5 Model development—Raw test data processing
105	G.6 Model development procedure
110	G.7 IEEE 1584 arc-flash model parameter range determination
113	G.8 For Iarc and IE estimation at user defined environment
114	G.9 IEEE 1584 arc-flash model application guidelines
125	Annex H (informative) Development of special model for current-limiting fuses H.1 General H.2 Development of curve-fitting equations
136	H.3 Special current-limiting fuse model equations
137	Annex I (informative) Development of special model for circuit breakers I.1 General
138	I.2 Special low-voltage circuit breaker model equations
141	Back cover