Measurement Of Apparent Ac+Dc Power; Measurement Of Reactive Ac Power - AEMC 407 User Manual

4.2.16 Measurement of Apparent AC+DC Power

Measurement
Range (2) (4)
Specified
Measurement
Range
Accuracy (3)
Resolution
Note (1) - Display of OL above 1500 kVA in single-phase (1000V x 1000A).
- Bandwidth in AC in voltage = 3 kHz, in current = 2 kHz
Notes (2), (3) and (4) of the previous § apply

4.2.17 Measurement of Reactive AC Power

Measurement
Range (2) (4)
Specified
Measurement
Range
Accuracy
(3) (7)
Resolution
Note (1) - Display of OL above 1000 kvar in single-phase (1000V x 1000A).
- Bandwidth in AC in voltage = 3 kHz, in current = 2 kHz
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.
Note 6 - Signs of reactive powers according to the four-quadrant rule (§4.2.12):
Quadrant 1: Reactive power Q
Quadrant 2: Reactive power Q
Quadrant 3: Reactive power Q
Quadrant 4: Reactive power Q
Note (7) Measurement stabilization ~8 sec
5 to
9999VA
1 to 100% of the
measurement range
1000A
± (2% R +10cts)
1000 to 2000A
± (2.5% R +10cts)
1VA
5 to
9999 var
1 to 100% of the
measurement range
± (2% R +10cts)
1 var
10.00 to
99.99kVA 999.9kVA
of the measurement range
± (2% R +3cts)
1000 to 2000A
± (2.5% R +3cts)
10VA
10.00 to 100.0 to
99.99 kvar 999.9 kvar
0 to 100%
of the measurement range
± (2% R +3cts)
10 var 100 var
sign +
sign +
sign -
sign –
73
100.0 to 1000 to
1500kVA (1)
0 to 100%
1000A
100VA 1000VA
1000 kvar (1)
1 kvar