GE D90 Plus - Page 248

238 D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
GROUPED PROTECTION ELEMENTS CHAPTER 7: PROTECTION
The logic for the phase time overcurrent 1 element is shown as follows. The logic is
identical for all phase instantaneous overcurrent elements.
Figure 203: Phase time overcurrent 1 scheme logic
Phase instantaneous overcurrent
The phase instantaneous overcurrent element can be used as an instantaneous element
with no intentional delay or as a definite time element. The input current is the
fundamental phasor magnitude.
Select the Settings > Protection > Elements > Group 1 > Current > Phase IOC menu to
open the phase instantaneous overcurrent configuration window.
Figure 204: Phase instantaneous overcurrent configuration settings
The following settings are available for each phase instantaneous overcurrent element.
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