External Selection Of Auto-Reclose Mode; Reclosing Reset Timer; Pulsing Of The Cb Closing Command And Counter - ABB REB670 Applications Manual

Section 12
Control
12.2.2.14
12.2.2.15
12.2.2.16
310
A start of a new reclosing cycle is blocked during the set "reset time" after the selected
number of reclosing shots have been made.

External selection of auto-reclose mode

The auto-reclose mode can be selected by use of the available logic function blocks.
Below is an example where the choice of mode is done from a hardware function key in
front of the IED with only 3 phase or 1/3 phase mode, 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-reclose mode is shown in Figure.
SLGGIO
PSTO
INTONE
NAME1
3
NAME2
1/3
ANSI09000168 V1 EN
Figure 115: Selection of the auto-reclose mode from a hardware functional key in
front of the IED

Reclosing reset timer

The reset timer tReset defines the time it takes from issue of the reclosing command, until
the reclosing function 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 CB closing command
is given.

Pulsing of the CB closing command and Counter

The CB closing command, CLOSECMD is given as a pulse with a duration set by
parameter tPulse. For circuit-breakers without an anti-pumping function, close pulse
cutting can be used. It is selected by parameter CutPulse=On. In case of a new trip pulse
(start), the closing command pulse is then cut (interrupted). The minimum closing pulse
length is always 50 ms. At the issue of the Reclosing command, the appropriate Reclosing
operation counter is incremented. There is a counter for each type of Reclosing and one for
the total number of Reclosing commands.
SMBRREC (79)
SWPOSN MODEINT
1MRK 505 337-UUS -
ANSI09000168_1_en.vsd
Application manual