Measurement Of Reactive Ac+Dc Power - AEMC 205 User Manual

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) With deformed signals (THD and harmonics), uncertainties are
guaranteed since Φ > 30°:
Add +1% for 10%<THD<20%
Add +3% for 20%<THD<30%
Add +5% for 30%<THD<40%

4.2.17 Measurement of Reactive AC+DC Power

Measurement
(2) (4)
Range
Specified
Measurement
Range
(3) (7)
Accuracy
Resolution
Note (1) - Display of OL above 900 kvar in single-phase (1000V x 900A)
- Bandwidth in AC in voltage = 3kHz, in current = 3kHz
Notes (2), (3) , (4), (5), (6) and (7) of the previous § apply
Specific characteristics in MAX/MIN mode in power (from 10Hz to 1kHz):
•
•
5 to
5999 var
1 to 100% of the
measurement
range
± (2% R +10cts)
1 var
Accuracy: add 1% R to the values in the table above.
Capture time: approximately 100ms
sign +
sign +
sign -
sign –
6.00 to
59.99 kvar 599.9 kvar
0 to 100% of the measurement range
± (2% R +3cts)
10 var
43
60.0 to 600 to
900 kvar
100 var 1 kvar
(1)