Automatic Continuation Of The Reclosing Sequence; Thermal Overload Protection Holding The Auto-Reclosing Function Back; Setting Guidelines; Configuration - ABB REB670 Applications Manual

1MRK 505 337-UUS -
12.2.2.21
12.2.2.22
12.2.3
12.2.3.1
Application manual
The Auto-Reclosing function will first receive a trip and initiate signal (RI) without any
three-phase signal (TR3P). The Auto-Reclosing function will start a single-phase
reclosing, if programmed to do so. At the evolving fault clearance there will be a new
signal RI and three-pole trip information, TR3P. The single-phase reclosing sequence will
then be stopped, and instead the timer, t1 3Ph, for three-phase reclosing will be started
from zero. The sequence will continue as a three-phase reclosing sequence, if it is a
selected alternative reclosing mode.
The second fault which can be single phase is tripped three phase because trip module
(TR) in the IED has an evolving fault timer which ensures that second fault is always
tripped three phase. For other types of relays where the relays do not include this function
the output PREP3PH (or the inverted PERMIT1PH) is used to prepare the other sub-
system for three pole tripping. This signal will, for evolving fault situations be activated
a short time after the first trip has reset and will thus ensure that new trips will be three
phase.

Automatic continuation of the reclosing sequence

SMBRREC (79) function can be programmed to proceed to the following reclosing shots
(if multiple shots are selected) even if start signals are not received from the protection
functions, but the breaker is still not closed. This is done by setting parameter AutoCont =
Enabled and tAutoContWait to the required delay for the function to proceed without a
new start.

Thermal overload protection holding the auto-reclosing function back

If the input THOLHOLD (thermal overload protection holding reclosing back) is
activated, it will keep the reclosing function on a hold until it is reset. There may thus be
a considerable delay between start of Auto-Reclosing and reclosing command to the
circuit-breaker. An external logic limiting the time and sending an inhibit to the INHIBIT
input can be used. The input can also be used to set the Auto-Reclosing on hold for a longer
or shorter period.

Setting guidelines

Configuration

Use the PCM600 configuration tool to configure signals.
Autorecloser function parameters are set via the local HMI or Parameter Setting Tool
(PST). Parameter Setting Tool is a part of PCM600.
Section 12
Control
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