ABB AI620 Analog module industrial system controller

Description

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Voltage dip is the condition of voltage dropping temporarily under the threshold level due to
an unexpected electrical system network disturbance. The dip threshold and hysteresis voltage settings are a percentage of the system rated voltage Un.
In single-phase system, when Udip falls below the threshold, an alarm is triggered; when Udip is
equal to or above the dip threshold plus the hysteresis, the alarm is reset.
In three-phase system, when Udip of any phase falls below the threshold, an alarm is triggered.
The alarm is reset when the Udip of three-phase are recovered to or above the threshold plus
the hysteresis value.
Voltage dip supervision settings
Value range 0=Disable 1=Enable
Default value 0
Threshold
Value range 5-100 %
Default value 10 %
Step value 1 %
Hysteresis
Value range 0-10 %
Default value 2 %
Step value 1 %