METREL MI 2893 - Current Interharmonics; Voltage Interharmonics

MI 2893 / MI 2892 / MI 2885 Measurements
226
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
10 % I
Nom
< Ih
N
< 100 %
10 mV
± 5 %  Ih
N
Ih
N
< 10 % I
Nom
0 ÷ 20
th (1)
0 ÷ 13
th (2)
0 ÷ 5
th (3)
VFD*
10 mV
± 0.2 %  I
Nom
10 % I
Nom
< Ih
N
< 100 %
10 mV
± 5 %  Ih
N
I
Nom
: Nominal voltage (RMS)
Ih
N
: measured harmonic current
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 % I
Nom
< THD
I
< 100 % I
Nom
0.1 %
± 0.6
100 % I
Nom
< THD
I
< 200 % I
Nom
0.1 %
± 0.3
I
Nom
: Nominal current (RMS)
Measuring range
Resolution
Accuracy
0 < k < 200
0.1
± 0.6
6.2.16 Voltage interharmonics
Measuring range
Harmonic
component N
System
freqency
Resolution
Accuracy
Uih
N
< 1 % U
Nom
0 ÷ 50
th
50/60Hz
10 mV
± 0.05 %  U
Nom
1 % U
Nom
< Uih
N
< 20 % U
Nom
10 mV
± 5 %  Uh
N
Uih
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
< Uih
N
< 20 % U
Nom
10 mV
± 5 %  Uh
N
U
Nom
: Nominal voltage (RMS)
Uih
N
: measured harmonic voltage
N
: interharmonic 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
6.2.17 Current interharmonics
Measuring range
Harmonic
component N
System
freqency
Resolution
Accuracy
Iih
N
< 10 % I
Nom
0 ÷ 50
th
50/60Hz
10 mV
± 0.15 %  I
Nom
10 % I
Nom
< Iih
N
< 100 %
10 mV
± 5 %  Iih
N
Iih
N
< 10 % I
Nom
0 ÷ 20
th (1)
0 ÷ 13
th (2)
0 ÷ 5
th (3)
VFD*
10 mV
± 0.2 %  I
Nom
10 % I
Nom
< Iih
N
< 100 %
10 mV
± 5 %  Iih
N
I
Nom
: Nominal current (RMS)
Iih
N
: measured interharmonic current
N
: interharmonic component 0
th
÷ 50
th
(1)
: If fundamental voltage frequency is within 5÷16Hz range