External Selection Of Auto Reclosing Mode; Auto Reclosing Reclaim Timer; Pulsing Of The Circuit Breaker Closing Command And Counter; Transient Fault - ABB RED650 Applications Manual

Section 12
Control
12.2.2.14
12.2.2.15
12.2.2.16
12.2.2.17
238
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.

External selection of auto reclosing mode

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 102.
IEC07000119 V3 EN-US
Figure 102: Selection of the auto-reclose mode from a hardware functional key
in front of the IED

Auto reclosing reclaim timer

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.

Pulsing of the circuit breaker closing command and counter

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.

Transient fault

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.
1MRK 505 393-UEN B
IEC14000040-1-en.vsd
Line differential protection RED650 2.2 IEC
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