Direction Angle - DEMA 400 Series User Manual

4.3.5.2.3

Direction Angle

It is the screen where Directional Active Over Power is set and angle of direction is selected.
Selection is made between (0
4.3.5.2.4 Operate Delay
The operation delay is the value that determines the characteristic of the protection curve with
the delay type. In the case of Directional Active Under Power, the delay type must be DMT.
This delay is expressed by the term tI >> and can take a value between (0 – 150) s.
4.3.5.2.5 Reset Delay
According to the menu settings, exceeding 1000x5W and without breaker tripping, It was
selected to count the DMT (constant time) reset time (0.04 s) active power below 1000x5W
.Thus, after the current falls below the threshold, 40 ms will be counted. If the threshold is
not exceeded until the end of this period, the protection function trip time counter will be
reseted. Reset delay thresholds are in the range of (0-60).
4.3.5.2.6 Inhibit on P<
If this setting is active when the device is subjected to low active power, the blocking of the
low active power is activated. If it is passive, blocking of the active under power protection is
deactivated.
4.3.5.2.7 P< Locking Level
When Inhibit on P< is activated, P< Locking Level is displayed on the device display to set
the lock level. This level can be selected in the range of 10 to 1000 W. Ensure that the active
low-power protection level is not selected greater than the minimum voltage rating.
4.3.5.2.8 Hysteresis
It allows the selection of the minimum and maximum values for the protection to be activated
by entering the entered value in percentages and the same value being switched off in
percentage. For example, if the Directional Active Under Power start value is set to 100W, the
hysteresis value is set to 5%, Protection is active when it falls under 100W; protecton is
disactive when it exceeds 105W. This hysteresis value can be selected from 1% to 20%.
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