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undercurrent is enabled and zero alarm is forbidden, when single phase current is equal to 0, the alarm is invalid.
7.5.7.2 Phase current loss alarm
When any current (not all current) is equal to or lower than the action value and meets the delay time, phase A current loss alarm
occurs; and when any of the following conditions occurs, the alarm is released:
The three-phase current is greater than the recovered value and meets the delay time
The three-phase current is lower than the phase loss action value.
7.5.7.3 Reverse phase sequence alarm:
The values of action and recovery and delay time are not applicable to the reverse phase sequence alarm. When the phase
sequence is not ABC normal phase sequence, an inverse phase sequence alarm is generated.
7.5.7.4 DI alarm
When the DI state changes from the initial state, an alarm is generated.
Examples are as follows:
Set Phase A overcurrent alarm of the first group of alarm enabled.
Action value: The action value is a primary value. For example, if the alarm value is set to 5.500A, when Phase A current
value exceeds 5.500A, the alarm condition is triggered and the timer starts.
Action delay time: When the alarm condition is triggered, if Phase A current value exceeds 5.500A, an alarm record will be
generated after the setted delay time (accurate to the second), Alarm group (alarm 1), alarm type (Phase A overcurrent), alarm time
(eg: 2017-5-12 14:15:20) will be recorded. If DO is associated with this alarm, the DO acts (see DO settings).
Recovered value: The recovered value is a primary value. For example, if the recovered value is set to 5.400A, after Phase A
overcurrent alarm has occurred, when Phase A current value is lower than 5.400A, the released alarm condition is triggered and
the timer starts. .
Recovered delay time: When the triggered alarm condition is released, if Phase A current value has been lower than 5.400A,
the released alarm record will be generated after the setted delay time (accurate to second), and the alarm group (Alarm1), alarm
type (Phase A overcurrent), the released alarm time (eg 2017-5-12 14:17:20) will be recorded. If DO is associated with this alarm,
the DO returns to its initial state. It can be calculated that the alarm duration is 2 minutes.
Note: The alarm is invalid when both the action value and the recovered value are zero.
7.5.8 Demand setting
1. Press ◀▶ until you select dMd and press the Enter key.
2. Set the window time (Wid) (1, 2, 3, 5) and press the Enter key.
3. Set the demand period (Pd) (1-60), which must be set to an integral multiple of the sliding window time and press the Enter key.
4. Press the SET button to return.
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