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