![]() This allows the results to be fine-tuned for any system voltage within this range. The higher number of tests allowed the document's authors to more thoroughly model the system from 208-volts to 15,000-volts. The formulas are based upon a much wider range of test results. ![]() The results will more accurately approximate the real world incident energy based upon the application of the proper variables. These variables result in more complexity. They allow the system to be analyzed based on the physical arrangement of the electrical components. The calculations are different with more variables. * Refines how small, low voltage systems are addressed.Įach of these changes impacts the way that we analyze the arc flash risk in electrical systems. ![]() * Calculates an adjustment factor for variation of arc current. * Adjusts the results based upon enclosure size, and for systems less than 600 volts, the depth of the enclosure. * Identifies additional electrode configurations. * The calculations are more robust, handling the full range of voltage from 208 to 15,000 volts. * Presents a more complex calculation method. IEEE 1584-2018 is a considerable rewrite of the 2002 document, but the major impact of the revisions can be summarized as the following items: This solution however, sometimes results in lower calculated incident energy and sometimes higher calculated incident energy. This has resulted in a more robust and complex solution. For this latest version of the document, the team completed more than six times the number of tests to refine the calculation methods. Calculate the definite arcing current I bendable at the specified open circuitry operating. The calculations in IEEE 1584 are based upon empirical results from numerous tests. What to calculate the Arc Flash Boundary in IEEE 1584 2018 The Arc Quick Boundary is calculated according to IEEE 1584 2018 as follows: Calculate the intermediate arching currents I arc600, I arc2700 plus I arc14300 at 600 V, 2700 V and 14300 V. Throughout the next 16 years IEEE and NFPA committee members collaborated together to do additional testing and produce an update to this milestone document. It also allowed the arc-flash boundary to be identified. Though it was soon recognized that there were limitations in the document, it refined previous work and finally gave the electrical industry a method to estimate the amount of incident energy exposure in an arc flash event. IEEE 1584 was a groundbreaking endeavor when it was originally published in 2002.
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