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6.2.11.1 Secondary
The display will show local voltage, source voltage, compensated voltage, line frequency,
and load current in secondary quantities along with load power factor. The voltage is
displayed on a 120 V base and the current is displayed on a 200 mA base.
The local voltage displayed will not match the voltage measured at the test
terminals on the adapter panel if a sensing VT ratio correction other than
0.0 V has been entered.
6.2.11.2 Primary
In order to use the calculated primary quantities feature, the user must enter the following
data in the Configuration Menu:
• Select line-to-line or line-to-ground VT configuration.
• Select single-phase quantities based on measured inputs, or three-phase quantities
based on measured inputs and assume a balanced system.
• Select primary voltage and current multipliers needed to calculate primary quantities.
6.2.11.3 Present demand
The Present Demand metering capability provided in the control follows the concept of a
lagged demand meter. The demand time interval is selected by the user as 5, 10, 15, 30 or
60 minutes. This is the time it takes for a thermal meter to indicate 90% of a change in load.
6.2.11.4 Energy metering
The Energy Metering function of the control displays the following measured values:
• Total Lagging VAr Hours (KVArh, MVArh or GVArh)
• Total Leading VAr Hours (KVArh, MVArh or GVArh)
• Total Reverse Watt Hours (KWh, MWh or GWh)
• Total Forward Watt Hours (KWh, MWh or GWh)
The measured values are retained in non-volatile memory. A real time clock is utilized to
record a date/time stamp for each quantity to indicate when the period of measurement
was initiated.
When a Energy Metering screen is selected, the screen cycles continuously to indicate the
total value, date and time the measurement was initiated. The E indicates that the
measured value can be reset by pushing ENT.
1VAC388793-MB A
Section 6
Configuration
TCC300 375
User Manual