8-8 L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CURRENT DIFFERENTIAL (87L) SETTINGS CHAPTER 8: APPLICATION OF SETTINGS
8
– Voltage source for charging current compensation
– Current source for breaker failure 1
Source 2:
– Second current source for current differential
– Current source for breaker failure 2
– Voltage source for synchrocheck 2
Source 3:
– Current source for distance, backup overcurrent
– Voltage source for distance
– Voltage source for synchrocheck 1 and 2
Source 4:
– Voltage source for synchrocheck 1
The EnerVista UR Setup configuration is as follows.
4. Sources are assigned accordingly in the specific element menus. For current differential, set
CURRENT DIFF SIGNAL
SOURCE 1
to “SRC 1” and CURRENT DIFF SIGNAL SOURCE 2 to “SRC 2.”
For distance and backup overcurrent, make the following settings changes.
For breaker failure 1 and 2, make the following settings changes.
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