11.6.8
Scheme communication
Scheme communication functions which are used in conjunction with distance
protection generate viewable data about the signals used in these applications.
Depending on the options chosen, data about weak end infeed, ground faults etc. is sent
to and from IEDs.
11.6.8.1
Scheme communication logic for distance or overcurrent protection
ZCPSCH (85)
Main menu/Test/Function status/Scheme communication/
ZSchemeCommunication(PSCH,85)/ZCOM
Shows available instances of ZCPSCH (85).
11.6.8.2
Phase segregated Scheme communication logic for distance protection
ZC1PPSCH (85)
Main menu/Test/Function status/Scheme communication/
ZPhSegrSchComm(PSCH,85)/ZCOM
Displays available instances of ZC1PPSCH (85) with some measurements regarding
trip output and carrier signals.
11.6.8.3
Current reversal and weak-end infeed logic for distance protection
ZCRWPSCH (85)
Main menu/Test/Function status/Scheme communication/
ZCurrentReversalWEI(PSCH,85)/EFCA
Displays available measurement outputs indicating trip status of weak end infeed logic.
11.6.8.4
Current reversal and weak-end infeed logic for phase segregated
communication ZC1WPSCH (85)
Main menu/Test/Function status/Scheme communication/
ZPhSegrCurrRevWEI(PSCH,85)/ZC1W
Displays the output data of ZC1WPSCH.
11.6.8.5
Current reversal and weak-end infeed logic for residual overcurrent
protection ECRWPSCH (85)
Main menu/Test/Function status/Scheme communication/
EFCurrentReversalWEI(PSCH,85)/EFCA
Section 11
1MRK506276-UUS B
Test the IED
82
Operator's manual
