MI 2892 Power Master
Technical specifications
191
With
A 1227, A 1446
Flex clamps
000,000,000.001 ÷ 999,999,999.999
±1.8 %
Ep
With A 1281
Multirange clamps
1000 A
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
React
iv
e
energ
y
Eq
**
Excluding clamps
(Instrument only)
000,000,000.001 ÷ 999,999,999.999
12 digits
±0.5 %
Eq
With
A 1227, A 1446
Flex clamps
000,000,000.001 ÷ 999,999,999.999
±1.8 %
Eq
With A 1281
Multirange clamps
1000 A
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
6.2.13
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
± 0.15 %
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
± 0.15 %
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
± 0.15 %
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 ÷ 110Hz
Measuring range
Resolution
Accuracy
0 % U
Nom
< THD
U
< 20 % U
Nom
0.1 %
± 0.3
U
Nom
: nominal voltage (RMS)
6.2.14
Current harmonics, THD and k-factor
Measuring range
Harmonic
component N
System
freqency
Resolution
Accuracy
Ih
N
< 10 % I
Nom
0 ÷ 50
th
50/60Hz
10 mV
± 0.15 %
I
Nom
10 % I
Nom
< Ih
N
< 100 %
10 mV
± 5 %
Ih
N
Ih
N
< 10 % I
Nom
0 ÷ 13
th
400Hz
10 mV
± 0.15 %
I
Nom
