Siemens SIPROTEC 7SJ62, Manual

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Functions
2.1 General
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008 53
2.1.4.2 Setting Notes
Configuration
Fault recording (waveform capture) will only take place if address
104 OSC. FAULT REC.
is set to
Enabled
.
Other settings pertaining to fault recording (waveform capture) are found in the
Osc. Fault Rec.
OSC.
FAULT REC. submenu of the SETTINGS 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 is the pickup of a protection element, i.e. the time 0 is defined as the instant the first pro-
tection function picks up. 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 saving criterion.
A fault event starts with the pickup by any protection function and ends when the last pickup of a protection
function has dropped out. Usually this is also the extent of a fault recording (address
402 WAVEFORM DATA
=
Fault event
). If automatic reclosing is performed, the entire system fault — with several reclosing attempts
if necessary — can be recorded until the fault has been cleared for good (address
402 WAVEFORM DATA
=
Pow.Sys.Flt.
). This facilitates the representation of the entire system fault history, but also consumes
storage capacity during the automatic reclosing dead time(s).
The actual storage time begins at the pre-fault time
PRE. TRIG. TIME
(address
404
) ahead of the reference
instant, and ends at the post-fault time
POST REC. TIME
(address
405
) after the storage criterion has reset.
The maximum storage time for each fault recording (
MAX. LENGTH
) is entered in address
403
. Recording per
fault must not exceed 5 seconds. A total of 8 records can be saved with a total time of 20 seconds at the most.
An oscillographic record can be triggered by a status change of a binary input, or from a PC via the operator
interface. Storage is then triggered dynamically. The length of the fault recording is set in address
406 BinIn
CAPT.TIME
(but not longer than
MAX. LENGTH
, address
403
). Pre-fault and post-fault times will add to this.
If the binary input time is set to
∞
, the length of the record equals the time that the binary input is activated
(static), but not longer than the
MAX. LENGTH
(address
403
).
2.1.4.3 Settings
Addr. Parameter Setting Options Default Setting Comments
401 WAVEFORMTRIGGE
R Save w. Pickup
Save w. TRIP
Start w. TRIP Save w. Pickup Waveform Capture
402 WAVEFORM DATA Fault event
Pow.Sys.Flt. Fault event Scope of Waveform Data
403 MAX. LENGTH 0.30 .. 5.00 sec 2.00 sec Max. length of a Waveform
Capture Record
404 PRE. TRIG. TIME 0.05 .. 0.50 sec 0.25 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
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