Long Trip Signal - ABB REC670 Applications Manual

1MRK 511 401-UEN A
14.2.2.6
14.2.2.7
14.2.2.8
14.2.2.9
Bay control REC670 2.2 IEC
Application manual
extension delay is not possible to add to the three-phase high-speed auto reclosing
dead time, t1 3PhHS.

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
INHIBIT input.
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 ARMode. The first
alternative is three-phase 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 3 phase, 1ph/3Ph (or 1ph/2ph/3Ph)
is selected.
ARMode = 3ph, (normal setting for a three-phase shot)
Three-phase auto reclosing, one to five shots according to the NoOfShots setting.
The prepare 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
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). START input (or 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 1PT1 output (single-phase
reclosing in progress) is activated. It can be used to suppress pole
Section 14
Control
M12391-117 v4
M12391-120 v7
M12391-124 v5
M12391-127 v8
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