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preferred to be displayed in kA unit, the user should set kA for the [I-Display Unit]. Table 9.2-3
shows the unit lists in the metering funciton.
Table 9.2-3 Selection of units to display
Selection of a unit to display
Volt (V) or kilo-volt (kV)
Ampare (A) or kilo-ampare (kA)
Kilo-watt (kW) or Mega-watt (MW)
Kilo-var (kvar) or Mega-var (Mvar)
Kilo-VA (kVA) or Mega-VA (MVA)
9.2.3 Diminishing a very small value to display zero
In the metering function, negligible metering values will be considered as zero. The user can
set the level to diminish in % using settings [I-Valid Level] and [V-Valid Level], at which values
‘4.00’ and ‘0.30’ are set, as default, respectively. Thus, zero (0) will be displayed when the
applied quantities at the VCT, which are lesser than the setting levels.
9.2.4 Flow settings for active/reactive/apparent powers
The user should set the rules for the metering P, Q, and S
(i) Metering in active power (P)
When the metering function measures the value for supplying power, the user should set Send
for the [Power]. Conversely, if the metering function should operate for absorbing power, set
Receive for the setting. Figure 9.2-3 illustrates the sign of the active power (P), which is
polarized with the voltage (V). In Figure 9.2-3.a exemplifies the metering function operating
for the supplying power so that the value P will have plus (+) sign (i.e., the I lags the V, which
shown in Quadrant IV). In Figure 9.2-3.b, the value P will have minus (–) sign when the I lags
the V, provided Receive is set for the setting.
a. Metering (P) for supplying power
b. Metering (P) for absorbing power
Figure 9.2-3 Sign of the active power (P) ruled by setting [Power]
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