ABB RELION REX640 Technical Manual page 1489

Protection and control

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1MRS759142 F

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.

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

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

Storage rate

(samples per

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.

Technical Manual

The maximum number of recordings is 100.

Storage rate parameter. Since the states of the binary

Rated frequency = 50 Hz

frequency of

Measurement functions

Rated frequency = 60 Hz

frequency of

frequency of