arc-flash analysis of utility power systems - Michigan Technological ...

List of Tables
Table 3.1: Factors for equipment and voltage class .................................................... 12
Table 3.2: PPE required given equipment voltage, fault current and clearing time ... 15
Table 3.3: Live-line tool work PPE required given equipment voltage, fault current
and clearing time ...................................................................................... 17
Table 4.1: 1 kV voltage level test system incident energy values ................................. 32
Table 4.2: 15 kV voltage level test system incident energy values ............................... 32
Table B.1: Arc-flash hazard calculator ........................................................................ 45
Table B.2: Arc-flash hazard calculator with equations ............................................... 46
Table C.1: Example system generator data ................................................................. 57
Table C.2: Example system load data .......................................................................... 58
Table C.3: Example system line data ........................................................................... 58
Table C.4: Example system relay data ......................................................................... 59
Table D.1: Example system PPE level requirements ................................................... 65
Table E.1: Incident energy level based on trip contact selected .................................. 69
Table E.2: Voltage level system comparisons .............................................................. 70
Table F.1: U.S. U2 inverse time overcurrent curve data ............................................. 71
Table F.2: Energy through equipment curve data ....................................................... 73
Figure F.3: Potential incident energy in equipment curve data .................................. 83
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