EMR-4000
IM02602009E
Step 2. In addition, the Demand specific settings have to be configured in the [SysA] menu:
Determine if the demand should generate an alarm or if it should run in the silent mode
(Alarm active/inactive);
Set the threshold; and
Where applicable, set a delay time for the alarm.
Peak Demand
The protective device also saves the peak demand values for current and power. The quantities represent the largest
demand value since the demand values were last reset. Peak demands for current and system power are date
and
time stamped.
Within the [
Operation/Statistics/Demand]
menu, the current Demand and Peak demand values can be seen.
Min. and Max. Values.
Within the Operation menu the minimum (min.) and maximum (max.) values can be seen.
Minimum values since last reset:
The minimum values are continuously compared to the last minimum value for that
measuring value. If the new value is less than the last minimum, the value is updated. Within the [
Device
Para/Statistics]
menu, a reset signal can be assigned.
Maximum values since last reset:
The maximum values are continuously compared to the last maximum value for
that measuring value. If the new value is greater than the last maximum, the value is updated. Within the [
Device
Para/Statistics]
menu, a reset signal can be assigned.
THD Protection
In order to supervise power quality, the protective device can monitor the voltage (phase-to-phase) and current THDs.
Within the [SysA/THD] menu:
Determine if an alarm is to be issued or not (Alarm active/inactive);
Set the threshold; and
Where applicable, set a delay time for the alarm.
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