GE D90 Plus Instruction Manual page 234

GROUPED PROTECTION ELEMENTS
Phase overvoltage
226
Figure 177: Phase undervoltage scheme logic
The phase overvoltage element may be used as an instantaneous element with no
intentional time delay or as a definite time element. The input voltage is the phase-to-
phase voltage, either measured directly from delta-connected VTs or as calculated from
phase-to-ground (wye) connected VTs. The specific voltages to be used for each phase are
shown in the logic diagram.
Select the Settings > Protection > Elements > Group 1 > Voltage > Phase OV menu item
to open the phase overvoltage configuration window.
Figure 178: Phase overvoltage configuration settings
The following settings are available for each phase overvoltage element.
Function
Range: Enabled, Disabled
Default: Disabled
This setting enables and disables the phase overvoltage protection element.
Source
Range: LINE (SRC 1), BKR 1 (SRC 2), BKR 2 (SRC 3)
Default: LINE (SRC 1)
This setting selects the signal source for the phase overvoltage protection element.
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 7: PROTECTION