1.4.3 Functions, codes and symbols
Table 1: Functions included in the relay
Function
IEC 61850 IEC 60617 ANSI
Protection
Distance protection DSTPDIS Z< 21P,21N
Local acceleration logic DSTPLAL LAL 21LAL
Scheme communication logic DSOCPSCH CL 85 21SCHLGC
Current reversal and weak-end
infeed logic
CRWPSCH CLCRW 85 21CREV,WEI
Communication logic for residual
overcurrent
RESCPSCH CLN 85 67G/N
SCHLGC
Current reversal and weak-end
infeed logic for residual overcurrent
RCRWPSCH CLCRWN 85 67G/N
CREV,WEI
Line differential protection with
inzone power transformer
LNPLDF 3Id/I> 87L
Binary signal transfer BSTGAPC BST BST
Switch-onto-fault protection CVPSOF CVPSOF SOTF
Three-phase non-directional
overcurrent protection, low stage
PHLPTOC 3I> 51P-1
Three-phase non-directional
overcurrent protection, high stage
PHHPTOC 3I>> 51P-2
Three-phase non-directional
overcurrent protection,
instantaneous stage
PHIPTOC
3I>>> 50P
Three-phase directional overcurrent
protection, low stage
DPHLPDOC 3I> -> 67P/51P-1
Three-phase directional overcurrent
protection, high stage
DPHHPDOC 3I>> -> 67P/51P-2
Non-directional earth-fault protection,
low stage
EFLPTOC Io> 51G/51N-1
Non-directional earth-fault protection,
high stage
EFHPTOC Io>> 51G/51N-2
Non-directional earth-fault protection,
instantaneous stage
EFIPTOC Io>>> 50G/50N
Directional earth-fault protection, low
stage
DEFLPDEF Io> -> 67G/N-1 51G/N-1
Directional earth-fault protection,
high stage
DEFHPDEF Io>> -> 67G/N-1 51G/N-2
Three-phase power directional
element
DPSRDIR I1 -> 67P-TC
Neutral power directional element DNZSRDIR I2 ->, Io -> 67N-TC
Admittance-based earth-fault
protection
EFPADM Yo> -> 21NY
Multifrequency admittance-based
earth-fault protection
MFADPSDE Io> -> Y 67NYH
Wattmetric-based earth-fault
protection
WPWDE Po> -> 32N
Table continues on next page
Section 1 1MRS759117 A
Introduction
8 REX640
Engineering Manual
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