Areva MiCOM P441, Technical Manual

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P44x/EN AP/E33 Application Notes
Page 136/220 MiCOM P441/P442 & P444
4.5.6 Logical Inputs used by the Autoreclose logic
Contacts from external equipment (External protection or external synchrocheck or external
AR) may be used to influence the auto-recloser via opto-isolated inputs. Such functions can
be allocated to any of the opto-isolated inputs on the relay via the programmable scheme
logic (Ensure that optos1&2 are not set for setting group change- Otherwise, these optos
cannot be mapped to functions in the PSL). The inputs can be selected to accept either a
normally open or a normally closed contact, programmable via the PSL editor.
SPAR Enable
The DDB SPAR Enable if assigned to an opto input in the PSL (in default PSL is inverted
and recorded to opto8) and when energized, will enable the 1P AR logic (The priority of that
input is higher than the settings done via MiCOM S1 or by front panel - that means the 1P
AR can be disabled even if activated in MiCOM S1; as the opto input is not energized.
(to be valid opto must be energized >1,2 sec).
P0507ENa
1
SPAR
INP_SPAR
AR SPAR enable
FIGURE 88
TPAR Enable
The DDB TPAR Enable if assigned to an opto input in the PSL (in default PSL is inverted
and recorded to opto8) and when energized, will enable the 3P AR logic (The priority is
higher than the settings done via MiCOM S1 or by front panel - that means the 3P AR can be
disabled even if activated in MiCOM S1; as that opto is not energized.
(to be valid opto must be energized >1,2 sec).
P0508ENa
1
TPAR
INP_TPAR
AR TPAR enable
FIGURE 89
NOTE: After a new PSL loaded in the relay (which includes "TPAR" or
"SPAR" cells); it is necessary to transfer again the settings
configuration (from PC to relay) for adjusting the datas in RAM and
EEPROM (otherwise discrepency could appear in the logic status of
AR enable).
A/R Internal
The DDB A/R Internal if assigned to an opto input in the PSL and when energized, will
enable the internal AR logic. This opto input could be connected to an external condition like
the Wdog of protection Main1 – which activates the internal AR of Main 2 (P44x) in case of
internal failure of the Main1.
P0509ENa
AR_Internal
AR_Enable
1
&
SPAR enable
TPAR enable
FIGURE 90 - AR ACTIVATED CONDITIONS