7–20 850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
FUNCTIONS CHAPTER 7: MONITORING
The settings of this function produces Switch-In, Switch-Out and Operate flags. The Power
Factor Switch-In flag is asserted when the absolute value of the calculated Power Factor is
below the Switch-In value, and supervision conditions are satisfied. The Power Factor
Operate flag in the Switch-In level is asserted if the element stays switched-in for the time
defined by the time delay. After the element drops from Switch-In, the Power Factor
Switch-Out flag is asserted when the Power Factor passes the Switch-Out value. The
Power Factor Operate flag in the Switch-Out level is asserted if the element stays switched
out for the time defined by the time delay.
The minimum operating voltage is set as a threshold below which the element is reset.
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