Armode = 3Ph, (Normal Setting For A Three-Phase Shot) - ABB RELION 670 SERIES Applications Manual

Section 15
Control
15.2.2.8
15.2.2.9
660
The decision for single- and three-phase trip is also made in the tripping logic
(SMPTTRC) function block where the setting 3 phase, 1ph/3Ph (or 1ph/2ph/3Ph) is
selected.

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

Three-phase auto reclosing, one to five shots according to the NoOfShots setting. The
prepare three-pole trip PREP3P output is always set (high). A trip operation is made as a
three-pole trip for all type of faults. The auto reclosing is as a three-phase auto 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
Single-phase, two-phase or three-phase auto reclosing first shot, followed by 3-phase auto
reclosing shots, if selected. Here, the auto recloser is assumed to be "On" and "Ready".
The circuit breaker is closed and the operation gear ready (operating energy stored).
START input (or STARTHS) is received and sealed-in. The READY output is reset (set to
false). ACTIVE output is set.
• If TR2P and TR3P inputs are low (i.e. single-phase trip): The timer for single-phase
auto reclosing dead time is started and the 1PT1 output (single-phase reclosing in
progress) is activated. It can be used to suppress pole disagreement and earth-fault
protection trip during the single-phase dead time interval..
• If TR2P input is high and TR3P input is low (i.e. two-phase trip): The timer for two-
phase auto reclosing dead time is started and the 2PT1 output (two-phase reclosing in
progress) is activated.
• If TR3P input is high (i.e. three-phase trip): The timer for three-phase auto reclosing
dead time, t1 3Ph or t1 3PhHS, is started depending on if START or STARTHS input
has been activated and 3PT1 output (three-phase reclosing shot 1 in progress) is set..
While any of the auto reclosing dead time timers are running, the INPROGR output is
activated. When the dead time runs out, the respective internal signal is transmitted to the
output module for further checks and to issue a breaker closing command.
When a circuit breaker closing command is issued, the prepare three-pole output trip is set.
When issuing a circuit breaker closing command the tReclaim timer is started. If no
tripping takes place during that time, the auto recloser resets to the "Ready" state and the
ACTIVE output resets. If the first reclosing shot fails, a three-phase trip will be initiated
and three-phase reclosing can follow, if selected.
1MRK 506 369-UUS -
Line distance protection REL670 2.2 ANSI
Application manual