![]() In printout of arc flash hazard reports, the results for those devices for which the lower limit (85%) of the arc current is used, are marked with an asterisk (*).Īt times, it may be required to view both the one-line results and the spreadsheet (see example below). This shows that when incident energy for 85% of calculated arc current is higher than that for 100% of calculated arc current. In the above figure, the results for relay R-6 is shown in pink. When 85% or the lower value yields greater incident energy, the text is displayed in pink. To view results for other working distances, click to the left of the Working Distance column in the spreadsheet.įigure 2: Arc Flash Hazard Report Spreadsheet for Detailed OptionĪs specified in Short Circuit Options, when 100% of calculated arc current or the upper value yields greater arc flash incident energy, then the text results are displayed in black in the Arc Flash Report spreadsheet. When you first open the Arc Flash Hazard Report window, only the first working distance appears in the spreadsheet. This is particularly suitable when hot sticks are used to operate devices from some distance. You can specify up to five different working distances. Incident energy is reported for every working distance specified in Short Circuit Options. This feature enables you to test for different possible scenarios so that the most conservative estimates can be obtained. The results on the spreadsheet will change automatically. You can change these numbers to see the effect on the incident energies and arc flash boundaries. Notice there are cells with blue text under the columns Arc Gap, Bolted Fault (kA) and Arc Time (sec). The arc flash hazard report is an interactive spreadsheet. When Bus Hazards (Incl Main) is selected in Short Circuit Options - Arc Flash Hazard, only the significant upstream protective devices are reported.įigure 1: Arc Flash Hazard Report Spreadsheet for Bus Hazards (Incl Main) Option ![]() This report shows the arc flash results for only the protective device upstream to the bus. The following figure shows a report for faulting “BUS-4” in the sample one-line z. Click Arrange for Arc Flash or press F8 to view the report.Fault one or more buses in the Short Circuit focus.Ensure the Arc Flash Spreadsheet check box is selected under Short Circuit Options > Arc Flash Hazard.You are here: Arc Flash Hazard Analysis > Spreadsheet Column Headings Arc Flash Hazard ReportsĪrc flash hazard reports are generated in the form of a spreadsheet. ![]()
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