Function
IEC 61850
IEC 60617
ANSI
Three-phase underimpedance
protection
UZPDIS
ZZ
21G
Three-phase underexcitation
protection
UEXPDIS
X<
40
Third harmonic-based stator earth-
fault protection
H3EFPSEF
dUo>/Uo3H
64TN
Rotor earth-fault protection (injection
method)
MREFPTOC
Io>R
64R
High-impedance or flux-balance
based differential protection
MHZPDIF
3dIHi>M
87HIM
Out-of-step protection with double
blinders
OOSRPSB
OOS
78PS
Negative-sequence overcurrent
protection for machines
MNSPTOC
I2>M
46M
Loss of phase, undercurrent
PHPTUC
3I<
37
Loss of load supervision
LOFLPTUC
3I<
37
Motor load jam protection
JAMPTOC
Ist>
50TDJAM
Motor start-up supervision
STTPMSU
Is2t n<
49,66,48,50TDLR
Motor start counter
MSCPMRI
n<
66
Phase reversal protection
PREVPTOC
I2>>
46R
Thermal overload protection for
motors
MPTTR
3Ith>M
49M
Stabilized and instantaneous
differential protection for machines
MPDIF
3dl>M/G
87M/87G
Underpower factor protection
MPUPF
PF<
55U
Stabilized and instantaneous
differential protection for two- or
three-winding transformers
TR3PTDF
3dI>3W
87T3
Stabilized and instantaneous
differential protection for two-winding
transformers
TR2PTDF
3dI>T
87T
Numerical stabilized low-impedance
restricted earth-fault protection
LREFPNDF
dIoLo>
87NLI
High-impedance based restricted
earth-fault protection
HREFPDIF
dIoHi>
87NHI
High-impedance differential
protection for phase A
HIAPDIF
dHi_A>
87_A
High-impedance differential
protection for phase B
HIBPDIF
dHi_B>
87_B
High-impedance differential
protection for phase C
HICPDIF
dHi_C>
87_C
Circuit breaker failure protection
CCBRBRF
3I>/Io>BF
50BF
Three-phase inrush detector
INRPHAR
3I2f>
68HB
Master trip
TRPPTRC
Master Trip
94/86
Arc protection
ARCSARC
ARC
AFD
High-impedance fault detection
PHIZ
HIF
HIZ
Table continues on next page
Section 1
1MRS759117 A
Introduction
10
REX640
Engineering Manual