ABB REB670 Series, Руководство по применению

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A start of a new auto reclosing cycle during the set “reclaim time” is blocked when the set
number of reclosing shots have been reached.
12.2.2.14 External selection of auto reclosing mode
M12391-241 v5
The auto reclosing mode can be selected by use of available logic function blocks. Below is an
example where the choice of mode, ARMode=3ph or ARMode=1/2/3ph, is done from a
hardware function key at the front of the IED, but alternatively there can for example, be a
physical selector switch on the front of the panel which is connected to a binary to integer
function block (BTIGAPC).
The connection example for selection of the auto reclosing mode is shown in Figure 131 .
IEC14000040-1-en.vsd
IEC07000119 V3 EN-US
Figure 131: Selection of the auto-reclose mode from a hardware functional key in front of
the IED
12.2.2.15 Auto reclosing reclaim timer
M12391-202 v4
The tReclaim timer defines the time it takes from issue of the breaker closing command, until
the auto recloser resets. Should a new trip occur during this time, it is treated as a
continuation of the first fault. The reclaim timer is started when the circuit breaker closing
command is given.
12.2.2.16 Pulsing of the circuit breaker closing command and counter
M12391-205 v4
The circuit breaker closing command,
CLOSECB is given as a pulse with a duration set by the
tPulse setting. For circuit breakers without an anti-pumping function, close pulse cutting can
be used. It is selected by the
CutPulse setting. In case of a new start pulse (trip), the breaker
closing command pulse is then cut (interrupted). The minimum breaker closing command
pulse length is always 50ms. At the issue of the breaker closing command, the appropriate
auto recloser operation counter is incremented. There is a counter for each type of auto
reclosing command and one for the total number of auto reclosing commands.
12.2.2.17 Transient fault
M12391-208 v4
After the breaker closing command the reclaim timer keeps running for the set
tReclaim time.
If no start (trip) occurs within this time, the auto recloser will reset. The circuit breaker remains
closed and the operating gear recharges. The
CBCLOSED and CBREADY input signals will be
set.
12.2.2.18 Permanent fault and reclosing unsuccessful signal
M12391-211 v5
If a new start occurs, and the number of auto reclosing shots is set to 1, and a new
START or
TRSOTF input signal appears, after the circuit breaker closing command, the UNSUCCL output
(unsuccessful reclosing) is set high. The timer for the first shot can no longer be started.
Depending on the set number of auto reclosing shots further shots may be made or the auto
reclosing sequence is ended. After reclaim timer time-out the auto recloser resets, but the
1MRK 505 370-UEN D Section 12
Control
Busbar protection REB670 271
Application manual