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V: 1.10 Revised: January 2020
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Chapter 10: Web Interface Readings and Parameter Settings
Real time Reading:
Select the mode of the readings for the meter when it is polled through
Modbus. By default the meter is in Secondary mode which will require some parameters to
be scaled by a relationship. Configuring the meter in Primary mode does not require any
scaling.
I A Direction:
Represents the flow of direction for the Phase A current being measured, con
-
figure this setting to troubleshoot issues related to incorrect polarity of readings such as real
power, Power Factor and etc.
I B Direction:
Represents the flow of direction for the Phase B current being measured, con
-
figure this setting to troubleshoot issues related to incorrect polarity of readings such as real
power, Power Factor and etc.
I C Direction:
Represents the flow of direction for the Phase C current being measured, con
-
figure this setting to troubleshoot issues related to incorrect polarity of readings such as real
power, Power Factor and etc.
Demand Settings
Sliding Window:
This setting refers to the demand type. There are 4 demand types that are
supported by the Acuvim II series meter, users can choose one of the following:
1. Fixed Window
- The demand is calculated based on selecting the calculation period be-
tween 1-30min. The meter will calculate and update the demand values at the end of each
calculation period.
2. Sliding Window
- The demand is calculated by selecting the calculation period between
1-30 min. The meter will average the energy accumulated within this period of time and
the demand value is updated every minute.
3. Thermal
- The demand is calculated based on thermal response, used in thermal demand
meters. This method uses a sliding window to update the demand value at the end of each
calculation period.
4. Rolling Window
- The demand is based on selecting a calculation period between 1-30min,
a subinterval(Demand Calculation Slip Time) and the demand value is updated at each
subinterval. The subinterval must be a factor of the calculation period. For example, with a
calculation period of 15min, the subinterval can be configured as 5min.
Sub Interval:
The sub interval setting is only relevant if the Rolling Window Method is select-
ed, this method requires a sub-interval time that must be a factor of the demand calculation
period. the range for this setting is from 1-30 minutes.