Siemens SIPROTEC 7UM62, Manual

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Functions
296
7UM62 Manual
C53000-G1176-C149-3
SETTINGS
menu. Waveform capture makes a distinction between the trigger for an
oscillographic record and the criterion to save the record (address
0401
WAVEFORMTRIGGER
). Normally the trigger is the pickup of a protective element, i.e.
when a protective element picks up the time is 0. The criterion for saving can be the
pickup as well (
Save w. Pickup
), or the device trip (
Save w. TRIP
). Another
option is to set (
Start with TRIP
). A trip command issued by the device is both the
trigger and the criterion to save the record with this setting.
A waveform capture includes in machine protection always the complete course of a
fault. An oscillographic fault record includes data recorded prior to the time of trigger,
and data after the dropout of the recording criterion. Therefore address
0402
WAVEFORM DATA
is preset to
Fault event
.
The user determines the length of pre-trigger time and post-dropout time to be
included in the fault record with the settings in address
0404 PRE. TRIG. TIME
and
address
0405 POST REC. TIME
. The maximum length of time of a record
MAX.
LENGTH
is entered at address
0403
. The setting depends on the criterion for storage,
the delay time of the protective functions and the desired number of stored fault
events. The largest value here is 5 s for fault recording of instantaneous values, 80 s
for recording of r.m.s. values (see address
0104
). A total of 8 records can be saved.
Note: These times apply for 50 Hz. They will be different with another frequency. If
RMS values
are stored, the times stated for parameters
0403
to
0406
will be 16
times longer.
An oscillographic record can be triggered and saved by a change in status of a binary
input or via the operator interface connected to a PC. The trigger is dynamic. The
length of a record for these special triggers is set at address
0406 BinIn
CAPT.TIME
(upper bound is
MAX. LENGTH
, address
0403
). Pre-trigger and post-
dropout times are not included. If the binary input time is set to
∞
, then the length of
the record equals the time that the binary input is activated (static), or the
MAX.
LENGTH
(address
0403
), whichever is shorter.
2.45.6.1 Settings for Oscillographic Fault Recording
2.45.6.2 Information for the Oscillographic Fault Recording
Addr. Setting Title Setting Options Default Setting Comments
401 WAVEFORMTRIG-
GER Save with Pickup
Save with TRIP
Start with TRIP Save with Pickup Waveform Capture
402 WAVEFORM DATA Fault event
Power System fault Fault event Scope of Waveform Data
403 MAX. LENGTH 0.30..5.00 sec 1.00 sec Max. length of a Waveform Cap-
ture Record
404 PRE. TRIG. TIME 0.05..4.00 sec 0.20 sec Captured Waveform Prior to
Trigger
405 POST REC. TIME 0.05..0.50 sec 0.10 sec Captured Waveform after Event
406 BinIn CAPT.TIME 0.10..5.00 sec;
∞
0.50 sec Capture Time via Binary Input
F.No. Alarm Comments
00004 >Trig.Wave.Cap. >Trigger Waveform Capture