ABB Relion 650 Series Technical Manual page 438

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PreFaultRecT

IEC05000487 V1 EN-US

The recording times definition

PreFaultRecT, 1

Pre-fault or pre-trigger recording time. The time before the fault including the

operate time of the trigger. Use the setting

Fault time of the recording. The fault time cannot be set. It continues as long as

any valid trigger condition, binary or analog, persists (unless limited by

the limit time).

PostFaultRecT, 3 Post fault recording time. The time the disturbance recording continues after all

activated triggers are reset. Use the setting

Limit time. The maximum allowed recording time after the disturbance recording

was triggered. The limit time is used to eliminate the consequences of a trigger

that does not reset within a reasonable time interval. It limits the maximum

recording time of a recording and prevents subsequent overwriting of already

stored disturbances. Use the setting

Analog signals

Up to 40 analog signals can be selected for recording by the Disturbance recorder

and triggering of the Disturbance report function. Out of these 40, 30 are reserved

for external analog signals from analog input modules (TRM) and line data

communication module (LDCM) via preprocessing function blocks (SMAI) and

summation block (3PHSUM). The last 10 channels may be connected to internally

calculated analog signals available as function block output signals (mA input

signals, phase differential currents, bias currents and so on).

PostFaultRecT

TimeLimit to set this time.

1MRK 511 424-UEN B

en05000487.vsd

PreFaultRecT to set this time.

PostFaultRecT to set this time.

Bay control REC650 2.2 IEC

Technical manual

M12155-160 v9