METREL MD 9240, User Manual

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MD 9240 True RMS Power Clamp Meter Specification
20
400A range: > 40A
1000A range: > 400A
600V range: > 30V
RANGE Accuracy
1)
0.10 ~ 0.99 F ~ 21st 22nd ~ 51st
3d 5d
Total Power Factor (PF)
1)
Specified accuracy @ ACA fundamental > 2A ; ACV fundamental > 50V
Power
RANGE
0 ~ 600.0kVA Accuracy
1) 2)
F ~ 10th 11th ~ 46th 47th ~ 51st
@ PF = 0.99 ~ 0.1 2.0%+6d 3.5%+6d 5.5%+6d
RANGE
0 ~ 600.0kW / kVAR Accuracy
1) 3)
F ~ 10th 11th ~ 25th 26th ~ 46th 47th ~ 51st
@ PF = 0.99 ~ 0.70 2.0%+6d 3.5%+6d 4.5%+6d
10%+6d
@ PF = 0.70 ~ 0.50 3.0%+6d
@ PF = 0.50 ~ 0.30 4.5%+6d
@ PF = 0.30 ~ 0.20 10%+6d 15%+6d
1)
Specified accuracy is for ACA clamp measurement at the center of jaws. When the
conductor is not positioned at the jaw center, position errors introduced are:
Add 1% to specified accuracy for ACA measurements made WITHIN jaw marking lines
(away from jaw opening)
Accuracy is not specified for ACA measurement made BEYOND jaw marking lines
(toward jaws opening)
2)
Add 1% to specified accuracy @ ACA fundamental < 5A or ACV fundamental < 90V.
Accuracy is not specified @ ACA fundamental < 1A or ACV fundamental < 30V
3)
Add 1% to specified accuracy @ ACA fundamental < 5A or ACV fundamental < 90V.
Accuracy is not specified @ ACA fundamental < 2A or ACV fundamental < 50V
A-lags
1)
Indication:
“A-lags” LCD annunciator turns on to indicate an inductive circuit, or Current A lags
Voltage V (i.e., phase-shift angle
θ
is “+”).
1)
A-lags Indication is specified at 50/60Hz fundamental without harmonics, and at ACV >
90V, ACA > 9A, & PF < 0.95