AEMC 205 - Measurement of Apparent AC Power; Measurement of Apparent AC+DC Power; Measurement of Reactive AC Power

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4.2.14 Measurement of Apparent AC Power
Measurement
Range
(2) (4)
5 to
5999VA
6.00 to
59.99kVA
60.0 to
599.9kVA
600kVA
(1)
Specified
Measurement
Range
1 to 100% of the
measurement
range
0 to 100%
of the measurement range
Accuracy
(3)
± (2% R +10cts)
± (2% R +3cts)
Resolution
1VA
10VA
100VA
1000VA
Note (1) Bandwidth in AC in voltage = 3kHz, in current = 3kHz
Notes (2), (3) and (4) of the previous § apply.
4.2.15 Measurement of Apparent AC+DC Power
Measurement
Range
(2) (4)
5 to
5999VA
6.00 to
59.99kVA
60.0 to
599.9kVA
600 to
900kVA
(1)
Specified
Measurement
Range
1 to 100% of the
measurement
range
0 to 100%
of the measurement range
Accuracy
(3)
± (2% R +10cts)
± (2% R +3cts)
Resolution
1VA
10VA
100VA
1000VA
Note (1) - Display of OL above 900kVA in single-phase (1000V x 900A)
- Bandwidth in AC in voltage = 3kHz, in current = 3kHz
Notes (2), (3) and (4) of the previous § apply
4.2.16 Measurement of Reactive AC Power
Measurement
Range
(2) (4)
5 to
5999 var
6.00 to
59.99 kvar
60.0 to
599.9 kvar
600 kvar
(1)
Specified
Measurement
Range
1 to 100% of the
measurement
range
0 to 100%
of the measurement range
Accuracy
(3) (7)
± (2% R +10cts)
± (2% R +3cts)
Resolution
1 var
10 var
100 var
1 kvar
Note (1) Bandwidth in AC in voltage = 3kHz, in current = 3kHz
Notes (2), (3) and (4) of the previous § apply
Note (5) In single-phase, the sign of the reactive power is determined by the
phase lead or lag between the V and I signs, while in balanced three-
phase, it is determined by the calculation on the samples.