IEC 61850 or function
name
ANSI
Function description
Line Differential
RED670
(Customized)
RED670 (B33)
RED670 (A42)
RED670 (B42)
RED670 (C42)
ZCPSCH
85
Scheme communication
logic for distance or
overcurrent protection
0-2
1-B35
1-B35
1-B35
1
ZPCPSCH
85
Phase segregated scheme
communication logic for
distance protection
0-2
1-B05
1-B05
1-B05
1-B05
ZCRWPSCH
85
Current reversal and weak-
end infeed logic for distance
protection
0-2
1-B35
1-B35
1-B35
1
ZPCWPSCH
85
Current reversal and weak-
end infeed logic for phase
segregated communication
0-2
1-B05
1-B05
1-B05
1-B05
ZCLCPSCH
Local acceleration logic
0-1
1-B35
1-B35
1-B35
1
ECPSCH
85
Scheme communication
logic for residual overcurrent
protection
0-1
1-C34
1-C34
1-C34
1
ECRWPSCH
85
Current reversal and weak-
end infeed logic for residual
overcurrent protection
0-1
1-C34
1-C34
1-C34
1
DTT
Direct transfer trip (see
)
0-1
Table 8. Direct transfer trip DTT
Function name
Function description
Total number of
instances
LAPPGAPC
Low active power and power factor protection
1
COUVGAPC
Compensated over- and undervoltage protection
1
SCCVPTOC
Sudden change in current variation
1
LCCRPTRC
Carrier receive logic
1
LCNSPTOV
Negative sequence overvoltage protection
1
LCZSPTOV
Zero sequence overvoltage protection
1
LCNSPTOC
Negative sequence overcurrent protection
1
LCZSPTOC
Zero sequence overcurrent protection
1
LCP3PTOC
Three phase overcurrent
1
LCP3PTUC
Three phase undercurrent
1
Line differential protection RED670
1MRK 505 379-BEN R
Version 2.2
Hitachi Energy
29
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