Table 176: Type of reclosing shots at different settings of “ARMode” or integer inputs to
"MODEINT"
MODEINT
(Integer)
ARMode Type of fault 1st shot 2nd - 5th shot
1 3ph
1ph 3ph 3ph
2ph 3ph 3ph
3ph 3ph 3ph
2 1/2/3ph
1ph 1ph 3ph
2ph 2ph 3ph
3ph 3ph 3ph
3 1/2ph
1ph 1ph 3ph
2ph 2ph 3ph
3ph - -
4 1ph+1x2ph
1ph 1ph 3ph
2ph 2ph -
3ph - -
5 1/2ph+1x3ph
1ph 1ph 3ph
2ph 2ph 3ph
3ph 3ph –
6 1ph+1x2/3ph
1ph 1ph 3ph
2ph 2ph -
3ph 3ph -
Auto reclosing shots
GUID-817797BE-FAFC-4BC7-B288-F19416459DCE v1
A maximum of five auto reclosing shots can be selected with the setting
NoOfShots. Every shot has its own dead time setting.
The first shot differs from the other shots by the possibility to extend its dead time
and to utilize up to four different time settings for it.
For the first shot, there are separate settings for single-, two- and three-phase dead
times, t1 1Ph, t1 2Ph and t1 3Ph. If only the START input signal is applied, and an
auto-reclosing program with single-phase reclosing is selected, the auto reclosing
dead time t1 1Ph will be used. If one of the TR2P or TR3P inputs is activated in in
parallel with the START input, the auto reclosing dead time for either two-phase or
three-phase auto reclosing is used.
There is also a separate time setting facility for three-phase high-speed auto
reclosing, t1 3PhHS. This high-speed auto reclosing is activated by the STARTHS
input and is used when auto reclosing is done without the requirement of
synchrocheck conditions to be fulfilled. The high-speed dead time shall be set
shorter than normal first shot three-phase dead time. Note that if high-speed three-
phase shot is not successful the auto reclosing sequence will continue with shot
two.
1MRK 505 394-UEN A Section 12
Control
Line differential protection RED650 2.2 IEC 331
Technical manual
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