ABB Relion 670 Series Applications Manual page 338

Section 15
Control
the auto recloser start must also be allowed from distance protection zone 2 time delayed trip.
Time extension delay is not possible to add to the three-phase high-speed auto reclosing dead
t1 3PhHS .
time,
15.2.2.6 Long trip signal
In normal circumstances the auto recloser is started with a protection trip command which
resets quickly due to fault clearing. The user can set a maximum start pulse duration
tLongStartInh . This start pulse duration time is controlled by setting LongStartInhib .
When start pulse duration signal is longer than set maximum start pulse duration, the auto
reclosing sequence interrupts in the same way as for a signal to the
15.2.2.7 Maximum number of reclosing shots
The maximum number of auto reclosing shots in an auto reclosing cycle is selected by the
setting
the first auto reclosing shot is set by the setting
auto reclosing. The other alternatives include some single-phase or two-phase auto reclosing.
Usually there is no two-phase tripping arranged, and then there will be no two-phase auto
reclosing.
The decision for single- and three-phase trip is also made in the tripping logic (SMPTTRC)
function block where the setting
ARMode = 3ph, (normal setting for a three-phase shot)
15.2.2.8
Three-phase auto reclosing, one to five shots according to the
three-phase trip PREP3P output is always set (high). A trip operation is made as a three-phase
trip for all type of faults. The auto reclosing is as a three-phase auto reclosing as in mode
1/2/3ph described below. All signals, blockings, inhibits, timers, requirements and so on, are
the same as in the example described below.
ARMode = 1/2/3ph
15.2.2.9
Single-phase, two-phase or three-phase auto reclosing first shot, followed by 3-phase auto
reclosing shots, if selected. Here, the auto recloser is assumed to be "On" and "Ready". The
circuit breaker is closed and the operation gear ready (operating energy stored).
STARTHS ) is received and sealed-in. The READY output is reset (set to false). ACTIVE output
(or
is set.
• If TR2P and TR3P inputs are low (i.e. single-phase trip): The timer for single-phase auto
reclosing dead time is started and the
activated. It can be used to suppress pole disagreement and earth-fault protection trip
during the single-phase dead time interval..
TR2P input is high and TR3P input is low (i.e. two-phase trip): The timer for two-phase
• If
auto reclosing dead time is started and the
is activated.
TR3P input is high (i.e. three-phase trip): The timer for three-phase auto reclosing dead
• If
time,
activated and
While any of the auto reclosing dead time timers are running, the
When the dead time runs out, the respective internal signal is transmitted to the output
module for further checks and to issue a breaker closing command.
332
NoOfShots . A maximum of five shots can be done. The type of auto reclosing used at
t1 3Ph or t1 3PhHS , is started depending on if START or STARTHS input has been
3PT1 output (three-phase reclosing shot 1 in progress) is set..
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ARMode . The first alternative is three-phase
3 phase , 1ph/3Ph (or 1ph/2ph/3Ph ) is selected.
1PT1 output (single-phase reclosing in progress) is
2PT1 output (two-phase reclosing in progress)
1MRK 511 401-UEN Rev. K
INHIBIT input.
NoOfShots setting. The prepare
START input
INPROGR output is activated.
Bay control REC670
Application manual
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