Stbrrec- Auto-Recloser Parameter Settings - ABB REL650 Applications Manual

Section 11
Control
11.3.3.3
332
1PT1
Indicates that 1-phase automatic reclosing is in progress. It is used to temporarily block an
ground-fault and/or pole disagreement function during the 1-phase open interval
3PT1, 3PT2, 3PT3, 3PT4 and 3PT5
Indicates that three-pole automatic reclosing shots 1-5 are in progress. The signals can be
used as an indication of progress or for own logic.
PREP3P
Prepare three-pole trip is usually connected to the trip block to force a coming trip to be
a three-pole one. If the function cannot make a single- or two-pole reclosing, the tripping
should be three-pole.
WFMASTER
Wait from master is used in high priority units to hold back reclosing of the low priority
unit during sequential reclosing.
Other outputs
The other outputs can be connected for indication, disturbance recording and so on as
required.

STBRREC- Auto-recloser parameter settings

Auto-recloser parameter settings
Operation
The operation of the Autorecloser for 1/3-phase operation (STBRREC, 79) function can
be switched Enabled and Disabled. The setting makes it possible to switch it Enabled or
Disabled using an external switch via IO or communication ports.
NoOfShots , Number of reclosing shots
In power transmission 1 shot is mostly used. In most cases one reclosing shot is sufficient
as the majority of arcing faults will cease after the first reclosing shot. In power systems
with many other types of faults caused by other phenomena, for example wind, a greater
number of reclose attempts (shots) can be motivated.
First shot and reclosing program
There are six different possibilities in the selection of reclosing programs. What type of
reclosing to use for the different kinds of faults depends on the power system
configuration and on the users practices and preferences. When the circuit-breakers only
have three-pole operation, then three-pole reclosing has to be chosen. This is usually the
case in subtransmission and distribution lines. Three-phase tripping and reclosing for all
1MRK 506 334-UUS A
Application manual