Long Trip Signal; Maximum Number Of Reclosing Shots; Armode = 3Ph, (Normal Setting For A Single 3 Phase Shot); Armode = 1/2/3Ph - ABB Relion 670 Series Applications Manual

1MRK 511 358-UUS A
An auto-reclosing open time extension delay,
delay. It is intended to come into use if the communication channel for permissive line protection
is lost. In such a case there can be a significant time difference in fault clearance at the two ends
of the line. A longer "auto-reclosing open time" can then be useful. This extension time is
controlled by setting parameter
the autorecloser start must also be allowed from distance protection Zone 2 time delayed trip.
13.2.2.6

Long trip signal

In normal circumstances the trip command resets quickly because of fault clearance. The user can
set a maximum trip pulse duration
reclosing sequence in the same way as a signal to input INHIBIT. If
inhibit is disabled and
13.2.2.7

Maximum number of reclosing shots

The maximum number of reclosing shots in an auto-reclosing cycle is selected by the setting
parameter
ARMode . The first alternative is three-phase reclosing. The other alternatives include some single-
phase or two-phase reclosing. Usually there is no two-pole tripping arranged, and then there will
be no two-phase reclosing.
The decision for single and 3 phase trip is also made in the tripping logic (SMPTTRC ,94) function
block where the setting

ARMode = 3ph, (normal setting for a single 3 phase shot)

13.2.2.8
3-phase reclosing, one to five shots according to setting
pole trip PREP3P is always set (high). A trip operation is made as a three-pole trip at all types of
fault. The reclosing is as a three-phase 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

13.2.2.9
1-phase, 2-phase or 3-phase reclosing first shot, followed by 3-phase reclosing shots, if selected.
Here, the auto-reclosing function is assumed to be "On" and "Ready". The breaker is closed and the
operation gear ready (operating energy stored). Input RI (or RI_HS) is received and sealed-in. The
output READY is reset (set to false). Output ACTIVE is set.
• If inputs TR2P is low and TR3P is low (1-pole trip): The timer for 1-phase reclosing open time is
started and the output 1PT1 (1-phase reclosing in progress) is activated. It can be used to
suppress pole disagreement and ground-fault protection trip during the 1-phase open
interval.
• If TR2P is high and TR3P is low (2-pole trip): The timer for 2-phase reclosing open time is
started and the output 2PT1 (2-phase reclosing in progress) is activated.
• If TR3P is high (3-pole trip): The timer for 3-phase auto-reclosing open time,
and output 3PT1 (3-phase auto-reclosing shot 1 in progress) is set.
• If STARTHS is high (3-phase trip): The timer for 3-phase auto-reclosing open time, t1 3PhHS is
started and output 3PT1 (3-phase auto-reclosing shot 1 in progress) is set.
Application manual
Extended t1=O n and the input PLCLOST. If this function is used
Extend t1 is used instead.
NoOfShots . The type of reclosing used at the first reclosing shot is set by parameter
3Ph, 1/3Ph (or1/2/3Ph) is selected.
tExtended t1 , can be added to the normal shot 1
tTrip .If Extended t1=Off , a long trip signal interrupts the
NoOfShots . The output Prepare three-
Extend t1 = On the long trip time
t1 3Ph is started
Section 13
Control
M12391-117 v3
M12391-120 v6
M12391-124 v4
M12391-127 v7
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