GE D90 Plus Instruction Manual page 245

CHAPTER 7: PROTECTION
Phase instantaneous overcurrent
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Figure 199: Phase time overcurrent 1 scheme logic
The phase instantaneous overcurrent element may 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 item
to open the phase instantaneous overcurrent configuration window.
Figure 200: Phase instantaneous overcurrent configuration settings
The following settings are available for each phase instantaneous overcurrent element.
Function
Range: Enabled, Disabled
Default: Disabled
This setting enables and disables the phase instantaneous overcurrent protection
element.
GROUPED PROTECTION ELEMENTS
235