Setting Notes; Settings - Siemens Siprotec 7UM611 Manual

by appropriate programs in the central device. Currents and voltages are referred to
their maximum values, scaled to their rated values and prepared for graphic presen-
tation. Binary signal traces (marks) of particular events e.g. "pickup", "tripping" are
also recorded.
Transfer to a central device can be polled automatically, either after each fault detec-
tion by the protection, or only after a trip.

2.35.4.2 Setting Notes

Fault recording (waveform capture) will only take place if address 104 FAULT VALUE
Fault Recording
is set to Instant. values or RMS values. Other settings pertaining to fault record-
ing (waveform capture) are found under the submenu OSC. FAULT REC. of the PA-
RAMETER menu. Waveform capture makes a distinction between the trigger instant
for an oscillographic record and the criterion to save the record (address 401
WAVEFORMTRIGGER). Normally the trigger instant is the pickup of the protective ele-
ment, i.e. when a protective element picks up the time is 0. The criterion for saving
may be both the device pickup (Save w. Pickup) or the device trip (Save w.
TRIP). A trip command issued by the device can also be used as trigger instant
(Start w. TRIP); in this case it is also the recording criterion.
The actual storage time encompasses the pre-fault time PRE. TRIG. TIME (address
404) ahead of the reference instant, the normal recording time and the post-fault time
POST REC. TIME (address 405) after the storage criterion has reset. The maximum
length of time of a fault record MAX. LENGTH is entered in Address 403. 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 rms values (see address 104). A total
of 8 records can be saved in this time.
Note: These times apply for 50 Hz. They will be different with another frequency. If
RMS values are stored, the times stated for parameters 403 to 406 will be 16 times
longer.
An oscillographic record can be activated via a binary input, by front panel operation
or via the operating interface connected to a PC. Storage is then triggered dynamically.
The length of the fault recording is set in address 406 BinIn CAPT.TIME (maximum
length however is MAX. LENGTH, address 403). Pre-fault and post-fault times will be
included. If the binary input time is set for ∞, then the length of the record equals the
time that the binary input is activated (static), or the MAX. LENGTH setting in address
403, whichever is shorter.

2.35.4.3 Settings

Addr. Parameter
401 WAVEFORMTRIGGE
R
403 MAX. LENGTH
404 PRE. TRIG. TIME
7UM61 Manual
C53000-G1176-C127-3
Setting Options
Save w. Pickup
Save w. TRIP
Start w. TRIP
0.30 .. 5.00 sec
0.05 .. 0.60 sec
Default Setting
Save w. Pickup Waveform Capture
1.00 sec Max. length of a Waveform
Capture Record
0.20 sec Captured Waveform Prior to
Trigger
2.35 Ancillary Functions
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