ABB Relion 611 Series, Technical Manual

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7.2.4 Application
The disturbance recorder is used for post-fault analysis and for verifying the correct
operation of protection relays and circuit breakers. It can record both analog and
binary signal information. The analog inputs are recorded as instantaneous values and
converted to primary peak value units when the protection relay converts the
recordings to the COMTRADE format.
COMTRADE is the general standard format used in storing
disturbance recordings.
The binary channels are sampled once per task execution of the disturbance recorder.
The task execution interval for the disturbance recorder is the same as for the
protection functions. During the COMTRADE conversion, the digital status values
are repeated so that the sampling frequencies of the analog and binary channels
correspond to each other. This is required by the COMTRADE standard.
The disturbance recorder follows the 1999 version of the
COMTRADE standard and uses the binary data file format.
7.2.5 Settings
Table 451: RDRE Non-group general settings
Parameter Values (Range) Unit Step Default Description
Operation 1=on
5=off
1 1=on Disturbance
recorder on/off
Record length 10...500 fundamental
cycles
1 50 Size of the
recording in
fundamental
cycles
Pre-trg length 0...100 % 1 50 Length of the
recording
preceding the
triggering
Operation
mode
1=Saturation
2=Overwrite
1 1 Operation
mode of the
recorder
Exclusion time 0...1 000 000 ms 1 0 The time
during which
triggerings of
same type are
ignored
Storage rate 32, 16, 8 samples per
fundamental
cycle
32 Storage rate
of the
waveform
recording
Table continues on next page
Section 7
1MRS757454 D
Measurement functions
390 611 series
Technical Manual