EDR-5000 IM02602007E
Trip Direction of the Under Frequency Load Shedding
Definitions
Load Flow Arrow System = Consumed active and reactive are counted positive (greater than zero)
Generator Flow Arrow System = produced power is to be counted positive (greater than zero)
By means of the parameter »
P Block dir
« a sign reversal can be applied to the active power within the
UFLS
module.
Protective devices that use the load flow arrow are to be set to »
Power Trip dir= negative«.
Protective devices that are
working on the base of the generator flow arrow system to be set to »
Power Trip dir= positive«.
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