ABB Relion 630 Series, Техническое руководство

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Disturbance recorder, event recorder and indication function register disturbance data
and events during tRecording, the total recording time.
The total recording time, tRecording, of a recorded disturbance is:
tRecording =
Pre-trigger time + Post-trigger time or Pre-trigger time + Recording time limit,
depending on which criterion stops the current disturbance recording
Pre-trigger time
Recording time limit
Post-trigger time
IEC09000708-1-en.vsd
1 2 3
Trig point
IEC09000708 V1 EN
Figure 43: Recording times definition
Pre-trigger time,
1
Pre-trigger recording time. The time before the fault including the operate time of the
trigger. Use the setting Pre-trigger time to set this time.
tFault, 2 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
Recording time
limit the limit time).
Post-trigger
time, 3
Post fault recording time. The time the disturbance recording continues after all
activated triggers are reset. Use the setting Post-trigger time to set this time.
Recording time
limit
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
Recording time limit to set this time.
Analog signals
Up to 40 analog signals can be selected for recording by the disturbance recorder and
triggering of the disturbance report function. Of those signals, 20 are reserved for
external analog signals from analog input modules via preprocessing function blocks
(SMAI). The last 20 channels can be connected to internally calculated analog signals
available as function block output signals (phase differential currents, bias currents
and so on).
Section 3
1MRS757256 F
Basic functions
80 PML630/Compact Load-Shedding Solution
Technical Manual