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Table 18: Demand & Energy Metering
Item Description
Demand Interval The Demand Interval applies to the Demand Present
Primary Current (Amps) parameter and the Demand
History parameters. The Demand Interval can be set
to 5, 10, 15, 30, and 60 minutes.
Demand Present The Demand Present Primary Current parameter
value follows the concept of a lagged demand meter.
The demand time interval is selected by the user as
15, 30 or 60 minutes. This is the time it takes for a
thermal meter to indicate 90% of a change in load.
Load Voltage Displays the real-time measured value of voltage at
the regulator or transformer. This value continuously
averaged over consecutive 32-second intervals.
Primary Current Displays the calculated primary demand current
based on the user-selected current multiplier and
measured secondary current.
Primary Watts Displays the real time demand value base on the
user-selected voltage and current multipliers; VT
configuration (line-to-ground or line-to-line), single-
phase or three-phase, and measured secondary
voltage and current.
Primary VAr Displays the real time demand value based on the
user-selected voltage and current multipliers, VT
configuration (line-to-ground or line-to-line), single-
phase or three-phase, and measured secondary
voltage and current.
Primary VA Displays the real time demand value based on the
user-selected voltage and current multipliers, VT
configuration (line-to-ground or line‑to‑line), single-
phase or three-phase, and measured secondary
voltage and current.
Demand History All demand history values (single phase) include the
date and time at which each occurred. A drag hand
value is the maximum or minimum value of a
measured quantity recorded since the last reset.
Minimum Load Voltage Displays minimum local voltage at the regulator or
transformer. This value continuously averaged over
consecutive 32-second intervals.
Maximum Load Voltage Displays drag hand maximum local voltage at the
regulator or transformer. This value continuously
averaged over consecutive 32-second intervals.
Maximum Primary Current Displays drag hand maximum primary current.
Maximum Primary Watts Displays drag hand maximum primary watts.
Maximum Primary VAr Displays drag hand maximum primary VArs.
Maximum Primary VA Displays drag hand maximum primary VA. Resets
automatically when Power Factor at (Max) VA value,
below, is reset.
Power Factor @ Max VA Displays drag hand power factor at time of maximum
VA.
Section 4
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TCC600
164 TCC300
User Manual