Stage with Inverse-Time Overcurrent Protection with Logarithmic-Inverse
Characteristic Curve
Description
Logic of the Stage
[lodiloin-280812-02.tif, 2, en_US]
Figure 6-74
Logic Diagram of the Directional Logarithmic Inverse-Time Overcurrent Protection, Ground
Apart from the operate curve, this type of stage is identical to the Inverse-time overcurrent protection –
advanced stage (see chapter 6.7.6.1 Description).
This section will only discuss the nature of the operate curve. For further functionality, refer to chapter
6.7.6.1 Description.
6.7.7
6.7.7.1
Protection and Automation Functions
6.7 Directional Overcurrent Protection, Ground
470 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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