ABB RELION REX640, Technical Manual, Page: 1489 / 1960

that fit into the available recording memory. This information can be seen with
the Rem. amount of rec. monitored data. The fixed memory size allocated to the
recorder can fit in two recordings that are ten seconds long. The recordings contain
data from all analog and binary channels of the disturbance recorder, at the sample
rate of 32 samples per fundamental cycle.
The number of recordings in the memory can be viewed with the Number of
recordings monitored data. The used memory space can be viewed with the Rec.
memory used monitored data. It is shown as a percentage value.
The maximum number of recordings is 100.
8.2.3.4 Sampling frequencies
The sampling frequency of the disturbance recorder analog channels depends
on the set rated frequency. One fundamental cycle always contains the number
of samples set with the Storage rate parameter. Since the states of the binary
channels are sampled once per task execution of the disturbance recorder, the
sampling frequency of binary channels is 400 Hz at the rated frequency of 50 Hz and
480 Hz at the rated frequency of 60 Hz.
Table 1437: Sampling frequencies of the disturbance recorder analog and binary
channels
Storage rate
(samples per
fundamental
cycle)
Recording
length Rated frequency = 50 Hz Rated frequency = 60 Hz
Sampling
frequency of
analog
channels
Sampling
frequency of
binary
channels
Sampling
frequency of
analog
channels
Sampling
frequency of
binary
channels
32 1 · Record
length
1600 Hz 400 Hz 1920 Hz 480 Hz
16 2 · Record
length
800 Hz 400 Hz 960 Hz 480 Hz
8 4 · Record
length
400 Hz 400 Hz 480 Hz 480 Hz
8.2.3.5 Uploading of recordings
The protection relay stores COMTRADE files to the
C:\COMTRADE
folder. The files
can be uploaded with PCM600 or any appropriate computer software that can
access the
C:\COMTRADE
folder.
One complete disturbance recording consists of two COMTRADE file types: the
configuration file and the data file. The file name is the same for both file types. The
configuration file has .CFG and the data file .DAT as the file extension.
1MRS759142 F Measurement functions
REX640
Technical Manual
1489