ABB Relion 670 Series Applications Manual page 301

1MRK 511 401-UUS F
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 time,
14.2.2.6 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
start pulse duration time is controlled by setting
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
14.2.2.7 Maximum number of reclosing shots
The maximum number of auto reclosing shots in an auto reclosing cycle is selected by the setting
NoOfShots . A maximum of five shots can be done. The type of auto reclosing used at the first auto
reclosing shot is set by the setting
other alternatives include some single-phase or two-phase auto reclosing. Usually there is no two-
pole 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)
14.2.2.8
Three-phase auto reclosing, one to five shots according to the
three-pole trip PREP3P output is always set (high). A trip operation is made as a three-pole 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
14.2.2.9
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 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..
• If TR2P input is high and TR3P input is low (i.e. two-phase trip): The timer for two-phase auto
reclosing dead time is started and the
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.
Bay control REC670
Application manual
3 phase , 1ph/3Ph (or 1ph/2ph/3Ph ) is selected.
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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LongStartInhib .
ARMode . The first alternative is three-phase auto reclosing. The
1PT1 output (single-phase reclosing in progress) is
2PT1 output (two-phase reclosing in progress) is
t1 3PhHS .
tLongStartInh . This
INHIBIT input.
NoOfShots setting. The prepare
START input (or
INPROGR output is activated.
Section 14
Control
M12391-117 v4
M12391-120 v7
M12391-124 v5
M12391-127 v8
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