Scheme Communication; Scheme Communication Logic For Distance Or Overcurrent Protection Zcpsch; Current Reversal And Weak-End Infeed Logic For Distance Protection Zcrwpsch; Current Reversal And Weak-End Infeed Logic For Residual Overcurrent Protection Ecrwpsch - ABB REC670 Operator's Manual

Section 11
Test the IED
11.6.7
11.6.7.1
11.6.7.2
11.6.7.3
11.6.7.4
11.6.7.5
76

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, earth faults etc. is
sent to and from IEDs.
Scheme communication logic for distance or overcurrent protection
ZCPSCH
Main menu/Test/Function status/Scheme communication/
ZSchemeCommunication(PSCH,85)/ZCOM
Shows available instances of ZCPSCH .
Current reversal and weak-end infeed logic for distance protection
ZCRWPSCH
Main menu/Test/Function status/Scheme communication/
ZCurrentReversalWEI(PSCH,85)/EFCA
Displays available measurement outputs indicating trip status of weak end infeed
logic.
Current reversal and weak-end infeed logic for residual overcurrent
protection ECRWPSCH
Main menu/Test/Function status/Scheme communication/
EFCurrentReversalWEI(PSCH,85)/EFCA
Displays one instance of ECRWPSCH with four measurements per instance.
Scheme communication logic for residual overcurrent protection
ECPSCH
Main menu/Test/Function status/Scheme communication/
EFSchemeCommunication(PSCH,85)/EFC
Displays available instances of ECPSCH with some measurements indicating
carrier and trip status.

Local acceleration logic ZCLCPLAL

Main Menu/Test/Function status/Scheme communication/
LocalAccelerationLogic(PLAL)/ZCLC
Displays available measurements indicating trip by loss of load or by zone extension
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Operator's manual