Alstom MiCOM P846, Technical Manual

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Programmable Logic P846/EN PL/D
MiCOM P846
(PL) 7-15
PL
DDB No. English Text Source Description
695 Bfail2 Trip 3ph CB Fail
tBF2 Trip 3Ph - three phase output from circuit
breaker failure logic, stage 2 timer
696 - 697 reserved
698 Control Trip CB Control
Control Trip – operator trip instruction to the circuit
breaker, via menu, or SCADA. (Does not operate for
protection element trips).
699 Control Close CB Control
Control Close command to the circuit breaker.
Operates for a manual close command (menu,
SCADA), and additionally is driven by the auto-reclose
close command.
702 Close in Prog CB Control
Control Close in Progress – the relay has been given
an instruction to close the circuit breaker, but the
Manual Close timer Delay has not yet finished timing
out.
703 – 734 Reserved
735 Freq High Frequency Tracking
Frequency tracking detects frequency above the
allowed range
736 Freq Low Frequency Tracking
Frequency tracking detects frequency below the
allowed range
737 Freq Not found Frequency Tracking
Frequency Not Found by the frequency tracking
738 Stop Freq Track Frequency Tracking
Stop Frequency Tracking signal – indicates under
legitimate conditions when the relay suspends
frequency tracking on the instruction of the distance
elements.
739 - 769 Reserved
770 VTS Inhibit PSL
Inhibit VTS element.
771 VTS Fast Block VT Supervision
VT Supervision Fast Block – blocks elements which
would otherwise maloperate immediately a fuse failure
event occurs
772 VTS Slow Block VT Supervision
VT Supervision Slow Block – blocks elements which
would otherwise maloperate some time after a fuse
failure event occurs
773 Reserved
774 CB Open 3 ph CB Status
Circuit Breaker is Open, all three phases
775 CB Open A ph CB Status
Circuit Breaker A phase is Open
776 CB Open B ph CB Status
Circuit Breaker B phase is Open
777 CB Open C ph CB Status
Circuit Breaker C phase is Open
778 CB Closed 3 ph CB Status
Circuit Breaker is Closed, all three phases
779 CB Closed A ph CB Status
Circuit Breaker A phase is Closed
780 CB Closed B ph CB Status
Circuit Breaker B phase is Closed
781 CB Closed C ph CB Status
Circuit Breaker C phase is Closed
782 - 1022 Reserved
1.8 Factory default programmable scheme logic
The following section details the default settings of the PSL. Please note that only output
contacts and the fault recorder trigger are mapped and therefore indicated.
The P846 model options are as follows:
Model Logic Inputs Relay Outputs
P846xxxAxxxxxxJ 8 8
P846xxxBxxxxxxJ 24 32