GUID-09EC65AC-C60B-4256-A601-FE2CC90D26EC v3
Table 179. Current harmonic monitoring CHMMHAI (50/60 Hz)
Function
Range or value
Accuracy
Fundamental
Harmonic
Frequency
(0.95 to 1.05) X f
r
2
nd
order to 9
th
order (0.1 - 0.5) X I
r
±2 mHz
True RMS
(0.2 to 2) X I
r
None
±0.5% of I
r
at I ≤ I
r
±0.5% of I at I > I
r
(0.2 to 2) X I
r
2
nd
order to 5
th
order (0.1 - 0.5) X I
r
±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
(0.2 to 2) X I
r
6
th
order to 9
th
order (0.1 - 0.5) X I
r
±5.0% of I
r
at I ≤ I
r
±5.0% of I at I > I
r
Fundamental
(0.2 to 2) X I
r
None
±0.5% of I
r
at I ≤ I
r
±0.5% of I at I > I
r
(0.2 to 2) X I
r
2
nd
order to 9
th
order (0.1 - 0.5) X I
r
±0.5% of I
r
at I ≤ I
r
±0.5% of I at I > I
r
Crest Factor
(0.2 to 2) X I
r
None
±2.0%
Harmonic
Amplitude
(0.2 to 2) X I
r
2
nd
order to 9
th
order (0.1 - 0.5) X I
r
±2.0% of I
r
at I ≤ I
r
±4.0% of I
H
at I > I
r
Total Demand
Distortion (TDD)
(0.2 to 2) X I
r
2
nd
order to 9
th
order (0.1 - 0.5) X I
r
±5.0% at I ≤ I
r
±5.0% of ITDD at I > I
r
Total Harmonic
Distortion (ITHD)
(0.2 to 2) X I
r
2
nd
order to 9
th
order (0.1 - 0.5) X I
r
±5.0%
GUID-2068BBA0-9026-48D0-9DEB-301BCB3C600C v3
Table 180. Voltage harmonic monitoring VHMMHAI (50/60 Hz)
Function
Range or value
Accuracy
Fundamental
Harmonic
Frequency
(0.95 to 1.05) X f
r
2
nd
order to 9
th
order (0.1 - 0.5) X U
F
±2 mHz
True RMS
(10 to 150) V
None
±0.5% of U
(10 to 150) V
2
nd
order to 5
th
order (0.1 - 0.5) X U
F
±2.0% of U
(10 to 150) V
6
th
order to 9
th
order (0.1 - 0.5) X U
F
±5.0% of U
Fundamental
(10 to 150) V
None
±0.5% of U
F
(10 to 150) V
2
nd
order to 9
th
order (0.1 - 0.5) X U
F
±0.5% of U
F
Crest Factor
(10 to 150) V
None
±2.0%
Harmonic
Amplitude
(10 to 150) V
2
nd
order to 9
th
order (0.1 - 0.5) X U
F
±4.0% of U
H
Total Harmonic
Distortion (VTHD)
(10 to 150) V
2
nd
order to 9
th
order (0.1 - 0.5) X U
F
±3.0%
Note:
U
F
- Applied Voltage Fundamental
U
H
- Applied Voltage Harmonic (of respective harmonics)
U - Actual Voltage = RMS (U
F
and U
H
)
Line differential protection RED670
1MRK 505 379-BEN R
Version 2.2
146
Hitachi Energy
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