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V: 1.10 Revised: January 2020
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Chapter 10: Web Interface Readings and Parameter Settings
Backlight:
This setting refers to how long back light on the meters display is on for, the
range is from 0-120 minutes, where 0 would disable to back light from turning off.
Rated Load:
The rated load can be represented in terms of either power or current.
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If current is selected the rated current that is used would be the CT1 setting value in the
PT and CT ratio settings section of the web page. For example if CT1 is set for 1000A,
and the average current the meter is monitoring is 500A, the load percentage would be
50% (500/1000A).
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If power is selected the rated primary power would be used in the load percentage cal-
culation. The max primary power can be calculated as follows:
Max Primary Power without using PTs = 3 * (480) * (CT1)
Max Primary Power using PTs = 3 * (PT1) * (CT1)
The max primary power would be the power that is entered in this setting.
The load percentage is displayed on the front of the Acuvim II meter display. The load
percentage is calculated based on the following equation:
Load Percentage = (Active System Power / ((5A or 1A) * User Setting))) * 100% , where
the meter will have either a 5A or 1A current input. If users have Acuvim II meters with
Rogowski Coil (RCT), 333mV and mA type Current Inputs then they would use 1A in this
equation.
For example if the max primary power of your system is 576000W (or 576kW), your sys-
tem is currently using 211kW and the meters current input type is 5A, then the load per-
centage would be calculated as follows:
Load Percentage = (211kW / (5 * 576kW)) * 100 = 7%