Areva MiCOM P441, Technical Manual

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P44x/EN AP/E33 Application Notes
Page 66/220 MiCOM P441/P442 & P444
2.12.6 Inputs /Outputs in SOTF-TOR DDB Logic
See also, DDB description in appendix of the same section.
2.12.6.1 Inputs
Man Close CB
Digital input (opto) 6 is assigned by default PSL to "Man Close CB"
The DDB Man Close CB if assigned to an opto input in PSL and when energized, will initiate
the internal SOTF logic enable (see Figure 35) without CB control.
If CB control is activated SOTF will be enable by internal detection (CB closing order
managed by CB control)
AR Reclaim
The DDB AR Reclaim if assigned to an opto input in PSL and when energized, will start the
internal logic TOR enable (see Figure 35).- (External AR logic applied).
CB aux A
CB aux B
CB aux C
The DDB CB Aux if assigned to an opto input in PSL and when energized, will be used for
Any pole dead & All pole dead internal detection
2.12.6.2 Outputs
SOTF Enable
The DDB SOTF Enable if assigned in PSL, indicates that SOTF logic is enabled in the relay
– see logic description in Figure 37
TOR Enable
The DDB TOR Enable if assigned in PSL, indicates that TOR logic is activated in the relay -
see logic description in Figure 37
TOC Start A
The DDB TOC Start A if assigned in PSL, indicates a Tripping order on phase A issued by
the SOTF levels detectors - see Figure 37
TOC Start B
The DDB TOC Start B if assigned in PSL, indicates a Tripping order on phase B issued by
the SOTF levels detectors - see Figure 37
TOC Start C
The DDB TOC Start C if assigned in PSL, indicates a Tripping order on phase C issued by
the SOTF levels detectors - see Figure 37
Any Pole Dead
The DDB Any Pole Dead if assigned in PSL, indicates that at least one pole is opened