Extech Instruments PQ3470 - Page 7

PQ3470-en-GB_V1.9 10/15
7
Harmonics Magnitude
(>5%, 50/60Hz)
Range Resolution Accuracy
ACV
1 to 20th
0.1V
± (2% + 5 digits)
21 to 30th ± (4% + 5 digits)
31 to 50th Reference only
ACA
1 to 20th
0.001A to 1A
± (2% + 5 digits)*
21 to 30th ± (4% + 5 digits)*
31 to 50th Reference only
Harmonics Magnitude
(>5%, 50/60Hz)
Range Resolution Accuracy
ACV
1 to 20th
0.1%
± (2% + 10 digits)
21 to 30th ± (4% + 20 digits)
31 to 50th Reference only
ACA
1 to 20th
0.1%
± (2% + 10 digits)*
21 to 30th ± (4% + 20 digits)*
31 to 50th Reference only
Crest Factor
(CFV or CFA)
1.000 to 9.999 0.001 ± (5% + 0.3)
Total Harmonic
Distortion (THD)
0 to 20%
0.1%
± (2% + 5 digits)
20.1 to 100% ± (6% + 10 digits)
Phase angle
1 to 50th 0.1° ± 2°
*Meter accuracy only. System accuracy includes the accuracy of the clamp used.
PFH: Long Term Power Factor
PF
∑:
For 3ɸ4W, 3 ɸ3W, 1 ɸ3W: PF
∑ = p∑/ S∑
For 1ɸ2W: PF1 = P1/S1