Ieee | Standard 80-2013 Pdf

The primary intent of the guide is to limit "potential differences" (voltages) within a substation that could be hazardous to anyone contacting metallic objects or standing in the area during a ground fault.

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The voltage difference between an energized metallic object (like a fence or transformer case) and the ground where a person is standing. The design must ensure this value stays below the safety threshold. 2. Step Potential The primary intent of the guide is to

When a user downloads the , they are accessing a dense compilation of mathematical formulas and physical constants. The document is roughly 200 pages of highly technical content, generally organized into key pillars: The design must ensure this value stays below

Without a properly designed ground grid, a fault current can raise the voltage of the substation soil significantly higher than that of the surrounding earth or remote "true" ground. If a person steps onto the substation property during this event, they could be subjected to immense voltages—Step Voltage (the difference in potential between two feet) or Touch Voltage (between a hand and a foot).