Technical description
3 Supporting functions
3.2 Disturbance recorder
VM50.EN004
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Reading recordings
The recordings can be uploaded, viewed and analysed with the
VAMPSET program. The recording is in COMTRADE format.
This means that also other programs can be used to view and
analyse the recordings made by the relay.
For more details, please see a separate VAMPSET manual.
Number of channels
At the maximum, there can be 12 recordings, and the
maximum selection of channels in one recording is also 12
(limited in waveform recording). The digital inputs reserve one
channel (includes all the inputs). Also the digital outputs
reserve one channel (includes all the outputs). If digital inputs
and outputs are recorded, there will be still 10 channels left for
analogue waveforms.
Disturbance recorder parameters
Parameter Value
Unit Description
Note
Mode
Saturated
Overflow
Behaviour in memory full
situation:
No more recordings are
accepted
The oldest recorder will be
overwritten
Set
SR
32/cycle
16/cycle
8/cycle
1/10ms
1/20ms
1/200ms
1/1s
1/5s
1/10s
1/15s
1/30s
1/1min
Sample
rate
Waveform
Waveform
Waveform
One cycle value
*)
One cycle value
**)
Average
Average
Average
Average
Average
Average
Average
Set
Time
s
Recording
length
Set
PreTrig
%
Amount of recording data
before the trig moment
Set
MaxLen
s
Maximum time setting.
This value depends on
sample rate, number and
type of the selected
channels and the
configured recording
length.