ABB RELION 620 Series Technical Manual page 971

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1MRS757644 F

Technical Manual

The maximum number of recordings is 100.

Sampling frequencies

The sampling frequency of the disturbance recorder analog channels depends on the

set rated frequency. One fundamental cycle always contains the amount 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

Sampling frequencies of the disturbance recorder analog channels

Storage rate

(samples per

Uploading of recordings

The protection relay stores COMTRADE files to the C:\COMTRADE\ folder. The

files can be uploaded with the 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.

Measurement functions

frequency of

channels, when

frequency is 50

frequency of

channels, when

frequency is 60

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