Measurement Of Reactive Ac+Dc Power; Calculation Of The Power Factor (Pf) - AEMC 607 User Manual

5.2.18 Measurement of Reactive AC+DC Power

Measurement
Range
(2) (4)
Specified
Measurement
Range
Accuracy
(3) (7)
Resolution
(1) Display of OL above 3000 kvar in single-phase (1000 V x 3000 A)
Bandwidth in AC in voltage = 3 kHz, in current = 1 kHz
(2), (3), (4), 5, 6 and (7) previous § apply.
Specific characteristics in MAX/MIN mode in power
(from 10 Hz to 1 kHz in AC and AC+DC):
■ Accuracy: add 1 % R to the values in the table above.
■ Capture time: approximately 100 ms

5.2.19 Calculation of the Power Factor (PF)

Measurement Range
Specific Measurement
Range
Accuracy
(2)
Resolution
(1) If one of the terms in the calculation of the power factor is displayed as OL, or forced to zero,
the display of the power factor is an indeterminate value
(2) 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:
The PF is always positive.
Clamp-On Meter Model 607- User Manual
(5 to 9999)
var
(1 to 100) % of the
measurement range
1000 A
± (2 % R +10 cts)
1000 to 2000 A
± (2.5 % R +10 cts)
2000 to 2500 A
DC
± (3.5 % R+10 cts)
2500 to 3000 A
DC
± (4.5 % R+10 cts)
1 var
(1)
(0 to 50) % of the
measurement range
± (3 % R + 3 cts)
(10.00 to (100.0 to
99.99) 999.9)
kvar kvar
(0 to 100) % of the measurement range
1000 A
± (2 % R +3 cts)
1000 to 2000 A
± (2.5 % R +3 cts)
2000 to 2500 A
± (3.5 % R+3 cts)
2500 to 3000 A
± (4.5 % R+3 cts)
10 var 100 var
0.0 to + 1.00
0.01
.
(1000 to
3000)
kvar
DC
DC
1 kvar
(50 to 100) % of the
measurement range
± (2 % R +3 cts)
(1)
61