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DEMA DPM 400 D - Protection

DEMA DPM 400 D
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83
Notr Over Voltage Protection Display
The settings that can be made in the menu are described below.
4.3.3.4.1 Protection
tuation, the protection is
activated in the active state and disabled in the passive state.
4.3.3.4.2 Start Value
It is the screen where the voltage value of neutral is set when the protection is active.
Selection is made in the (1 260) V range
4.3.3.4.3 Operate Delay
The operation delay is the value that determines the characteristic of the protection curve with
the delay type. In the case of voltage protection, the delay type must be DMT. This delay is
expressed by the term tI >> and may take a value between (0.02 - 600) s.
4.3.3.4.4 Reset Delay
According to the menu settings, exceeding 200V and without breaker tripping, It was selected
to count the DMT (constant time) reset time (0.04 s) after the voltage exceeds 200V. Thus,

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