Datakom DPR-350 Series, Руководство пользователя

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DPR-350 User Manual Ver_01 Firmware V-1.0
Demand values are the average of the measured values over a given period.
Average values are compared with the demand values at the end of each period. If the new value is
greater than the demand value, the new value is recorded as the demand value.
Demand values are automatically reset at the start of each month. Therefore, the demand values are only
valid for the current month.
Demand values can also be reset manually following the procedure detailed in RESETTING THE
COUNTERS section in the programming menu.
Demand values are stored in non-volatile memory and they are not affected by power losses.
Demand is calculated for the below values:
-demand I1
-demand I2
-demand I3
-demand Ia (average current)
-demand import active power
-demand export active power
Min-max values depend on internal measurements.
Since they don’t have an average period, they are
sensitive to short-term changes such as starting currents of electric motors.
While the device is active, it compares actual values to recorded values. If the actual value fulfills the
condition (greater than max value or lower than min value), it is recorded as the new value.
Min-max values can be reset from the programming menu. The relevant parameter is:
MIN/MAX/COUNTER CONFIG>Min/Max Restart
Min/Max values are stored in non-volatile device memory, so they are not affected by power losses.
Min/max detection starts 5 seconds after the device powers on in order to achieve more robust results.
Min/max is calculated for the values below:
-Min voltage L1-N
-Min voltage L2-N
-Min voltage L3-N
-Min voltage L12
-Min voltage L23
-Min voltage L31
-Min frequency
-Min current I1
-Min current I2
-Min current I3
-Min current Ia (average current)
-Min import active power
-Min export active power
-Min inductive reactive power
-Min capacitive reactive power
-Max voltage L1-N
-Max voltage L2-N
-Max voltage L3-N
-Max voltage L12
-Max voltage L23
-Max voltage L31
-Max frequency
-Max current I1
-Max current I2
-Max current I3
-Max current Ia (average current)
-Max import active power
-Max export active power
-Max inductive reactive power
-Max capacitive reactive power
15. DEMAND VALUES
16. MIN-MAX VALUES