Active Ac Power Measurements - AEMC 607 User Manual

5.2.13 Active AC Power Measurements

Measurement
Range
(2) (4)
Specified
Measurement Range
Accuracy
(3 ) (7)
Resolution
(1) Display of OL above 2000 kW in single-phase (1000 V x 2000 A).
Bandwidth in AC in voltage = 3 kHz, in current = 1 kHz
(2) and (3) of the previous § apply.
(4) Any power measured less than 5 W is regarded as zero and causes the display of
.
dashes
If the voltage is less than 0.15 V or if the current is less than 0.15 A, the power measured is
regarded as zero and causes the display of
(7) In balanced three-phases, with deformed signals (THD and harmonics), uncertainties are
guaranteed since Ф > 30 °. Additional errors are following, depending of THD:
Add +1 % for 10 % < THD < 20 %
Add +3 % for 20 % < THD < 30 %
Add +5 % for 30 % < THD < 40 %
NOTE 5:
negative for power generated.
NOTE 6:
are defined by the four-quadrant rule:
The diagram below sums up the signs of the power as a function of the
phase angle between V and I:
Quadrant 1: Active power P
Quadrant 2: Active power P
Quadrant 3: Active power P
Quadrant 4: Active power P
58
(5 to 9999)
W
(1 to 100) % of the
measurement range
1000 A
± (2 % R +10 cts)
1 W
The active powers are positive for power consumed and
The signs of the active and reactive powers and power factor
(10.00 to
99.99)
kW
(0 to 100) % of the measurement range
10 W
.
sign + (power consumed)
sign - (power generated)
sign - (power generated)
sign + (power consumed)
Clamp-On Meter Model 607 - User Manual
(100.0 to (1000 to
999.9)
kW
1000 A
± (2 % R +3 cts)
100 W 1000 W
2000)
kW
(1)