(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-phase 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.
12.2.2.10
ARMode
=
1/2ph
, 1-phase or 2-phase reclosing in the first shot
M12391-136 v5
At single-phase or two-phase tripping, the operation is as in the example described
above, program mode 1/2/3ph. If the first reclosing shot fails, a three-phase trip
will be issued and three-phase auto reclosing can follow, if selected. In the event of
a three-phase trip, TR3P input high, the auto recloser will be inhibited and no auto
reclosing takes place.
12.2.2.11
ARMode
= 1ph+1*2ph, 1-phase or 2-phase reclosing in the first shot
M12391-139 v5
At single-phase tripping, the operation is as in the above described example,
program mode 1/2/3ph. The single-phase auto reclosing attempt can be followed by
three-phase reclosing, if selected. At two-phase trip, a failure of a two-phase auto
reclosing attempt will inhibit the auto recloser. No more shots are attempted. If the
first trip is a three-phase trip, the auto-reclosing will be inhibited. No more shots
are attempted. The expression “1*2ph” should be understood as “Only one shot at
two-phase auto reclosing”.
Section 12 1MRK 505 393-UEN B
Control
236 Line differential protection RED650 2.2 IEC
Application manual
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