Technical description
3 Supporting functions
3.2 Disturbance recorder
VM265.EN011
VAMP 24h support phone +358 (0)20 753 3264
99
Available channels
The following channels i.e. signals can be linked to a
disturbance recorder:
Channel
Description
Available for
waveform
IL1, IL2, IL3
Phase current
Yes
I‟L1, I‟L2, I‟L3
Phase current
Yes
Io1, Io2
Measured residual current
Yes
f
Frequency
IoCalc
Phasor sum Io = (IL1+IL2+IL3)/3
I‟oCalc
Phasor sum Io = (I‟L1+I‟L2+I‟L3)/3
I1, I‟1
Positive sequence current
I2, I‟2
Negative sequence current
I2/I1, I‟2/I‟1
Relative current unbalance
I2/In, I‟2/I‟n
Current unbalance [xI
GN
]
IL
Average (IL1 + IL2 + IL3)/3
I‟L
Average (I‟L1 + I‟L2 + I‟L3)/3
DO
Digital outputs
Yes
DI
Digital inputs
Yes
THDIL1
Total harmonic distortion of IL1
THDI‟L1
Total harmonic distortion of I‟L1
THDIL2
Total harmonic distortion of IL2
THDI‟L2
Total harmonic distortion of I‟L2
THDIL3
Total harmonic distortion of IL3
THDI‟L3
Total harmonic distortion of I‟L3
IL1RMS
IL1 RMS for average sampling
IL2RMS
IL2 RMS for average sampling
IL3RMS
IL3 RMS for average sampling
ILmin
I‟Lmin
ILmax
I‟Lmax
ΔIL1,ΔIL2,ΔIL3
IL1w,IL2w,IL3w
I‟L1w,I‟L2w,I‟L3w
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