VAMP 59 - Page 108

3.2 Disturbance recorder
3 Supporting functions
Technical description
108
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VM59.EN001
Parameter
Value
Unit
Description
Note
AddCh
Add one channel.
Maximum simultaneous
number of channels is 12.
Set
IL1, IL2,
IL3
Phase current
Io1
Measured residual current
Uo
Zero sequence voltage
f
Frequency
CosFii
cos
IoCalc
Phasor sum Io =
(IL1+IL2+IL3)/3
I1
Positive sequence current
I2
Negative sequence current
I2/I1
Relative current unbalance
I2/In
Current unbalance [xI
N
]
IL
Average (IL1 + IL2 + IL3)/3
DO
Digital outputs
DI
Digital inputs
TanFii
tan
THDIL1
Total harmonic distortion
of IL1
THDIL2
Total harmonic distortion
of IL2
THDIL3
Total harmonic distortion
of IL3
IL1RMS
IL1 RMS for average
sampling
IL2RMS
IL2 RMS for average
sampling
IL3RMS
IL3 RMS for average
sampling
IL1Rem,
IL2Rem,
IL3Rem
Remote currents

Clear
Remove all channels
List of selected channels
ClrCh
Set
(Ch)
Set = An editable parameter (password needed)
*) This is the fundamental frequency rms value of one cycle updated every
10 ms.
**) This is the fundamental frequency rms value of one cycle updated every
20 ms.