Overcurrent Characteristics Grabber

Extraction of overcurrent inverse-time characteristics from data sheet

The Overcurrent Characteristics Grabber tool is a supplement to the Overcurrent test module. It helps to extract inverse-time overcurrent relay tripping characteristics from graphical representations. This is most helpful in cases where the characteristic is not known by a given formula but only by a graphical representation, e.g. an image in a relay manual.

This tool loads a scanned image of the characteristics and guides the user through scaling of the I and t axes and successive digitizing of I/t data pairs along the displayed tripping characteristic curve. The resulting characteristics curve value table then is transferred to the Overcurrent test module for performing tests with automatic assessments.

This module is part of the Test Universe software. For more information please refer to the Test Universe website.

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