METREL MI 2893 - Current Harmonics, THD and K-Factor; Voltage Harmonics and THD

MI 2893 / MI 2892 / MI 2885 Measurements
225
With
A 1227/A 1445/A
1446/A 1501/A
1502/A 1503
Flex clamps
000,000,000.001 ÷ 999,999,999.999
±1.8 %  Ep
With A 1281/A 1588
Multirange iron
clamps
000,000,000.001 ÷ 999,999,999.999
±0.8 %  Ep
With A 1033
1000 A
000,000,000.001 ÷ 999,999,999.999
±1.6 %  Ep
Reactive energy
Eq**
Excluding clamps
(Instrument only)
000,000,000.001 ÷ 999,999,999.999
12 digits
±0.5 %  Eq
With
A 1227/A 1445/A
1446/A 1501/A
1502/A 1503
Flex clamps
000,000,000.001 ÷ 999,999,999.999
±1.8 %  Eq
With A 1281/A 1588
Multirange clamps
000,000,000.001 ÷ 999,999,999.999
±0.8 %  Eq
With A 1033
1000 A
000,000,000.001 ÷ 999,999,999.999
±1.6 %  Eq
*Accuracy values are valid if cos φ  0.80, I  10 % I
Nom
and U  80 % U
Nom
**Accuracy values are valid if sin φ  0.50, I  10 % I
Nom
and U  80 % U
Nom
6.2.14 Voltage harmonics and THD
Measuring range
Harmonic
component N
System
freqency
Resolution
Accuracy
Uh
N
< 1 % U
Nom
0 ÷ 50
th
50/60Hz
10 mV
± 0.05 %  U
Nom
1 % U
Nom
< Uh
N
< 20 % U
Nom
10 mV
± 5 %  Uh
N
Uh
N
< 1 % U
Nom
0 ÷ 13
th
400Hz
10 mV
± 0.05 %  U
Nom
1 % U
Nom
< Uh
N
< 20 % U
Nom
10 mV
± 5 %  Uh
N
Uh
N
< 1 % U
Nom
0 ÷ 20
th (1)
0 ÷ 13
th (2)
0 ÷ 5
th (3)
VFD*
10 mV
± 0.2%  U
Nom
1 % U
Nom
< Uh
N
< 20 % U
Nom
10 mV
± 5 %  Uh
N
U
Nom
: Nominal voltage (RMS)
Uh
N
: measured harmonic voltage
N
: harmonic component
(1)
: If fundamental voltage frequency is within 5÷16Hz range
(2)
: If fundamental voltage frequency is within 16÷33Hz range
(3)
: If fundamental voltage frequency is within 33 ÷ 120Hz
Measuring range
Resolution
Accuracy
0 % U
Nom
< THD
U
< 20 % U
Nom
0.1 %
± 0.3
U
Nom
: nominal voltage (RMS)
6.2.15 Current harmonics, THD and k-factor
Measuring range
Harmonic
component N
System
frequency
Resolution
Accuracy