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BricsCAD InPower Arc Flash Analysis with IEEE-1584 2018

BricsCAD InPower Arc Flash Analysis with IEEE-1584 2018

Summary:

BricsCAD InPower is used to duplicate and confirm the IEEE-1584 2018 arc flash calculations. Electrode configuration, enclosure dimensions, working distance and bus gap information is loaded into BricsCAD InPower bus block attributes. The network is loaded into InPower and the arc flash calculations are executed. Bolted fault current, fault clearing time, incident energy and arc flash boundary are then calculated. Optional arc flash label images are generated for each bus.

Annex D (informative)
Sample incident energy calculations
D.1 Sample arc-flash incident energy calculation for a medium-voltage
system

Electrode Configuration: VCB
Three-phase system voltage: 4.160 KV
Bolted Fault Current I bf : = 15 kA symm rms
Gap between conductors (electrodes): 104 mm
Working distance: 914.4 mm
Enclosure dimensions: Width : = 762 mm Height : = 1143 mm

Answer From IEEE-1584 2018
Arc Flash Incident Energy: 13.343 J/cm^2 or 3.2 Calories/cm^2
Arc Flash Boundary: 1704 mm

Answer with BricsCAD InPower
Arc Flash Incident Energy: 3.2 Calories/cm^2
Arc Flash Boundary: 1715 mm

Details:
Protective Device: P-CUSTOMFUSE-12-13 Bus-12->13
m: 4.222 multiples of pickup
Fault Amps: 12667.397 Amps
OPtime: 0.225 seconds
Arcflash: P-CUSTOMFUSE-12-13 Bus-13
Iarc 12.667 KAmps
Arcflash Boundary 1715.377 mm
Energy 3.222 cal/cm^2 13.481 J/cm^2

Arc Flash Labels:

Image01.png
343 x 428 - 37K
Image02.png
595 x 454 - 36K
Image03.png
509 x 437 - 10K
Image04.png
695 x 498 - 156K

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