ABB Relion 620 Series - Page 28

Function IEC 61850 IEC 60617 ANSI
FRPFRQ3 f>/f<,df/dt (3) 81 (3)
FRPFRQ4 f>/f<,df/dt (4) 81 (4)
FRPFRQ5 f>/f<,df/dt (5) 81 (5)
FRPFRQ6 f>/f<,df/dt (6) 81 (6)
Overexcitation pro-
tection
OEPVPH1 U/f> (1) 24 (1)
OEPVPH2 U/f> (2) 24 (2)
Three-phase thermal
protection for feed-
ers, cables and distri-
bution transformers
T1PTTR1 3Ith>F (1) 49F (1)
Three-phase thermal
overload protection,
two time constants
T2PTTR1 3Ith>T/G/C (1) 49T/G/C (1)
Negative-sequence
overcurrent protec-
tion for machines
MNSPTOC1 I2>M (1) 46M (1)
MNSPTOC2 I2>M (2) 46M (2)
Loss of phase (under-
current)
PHPTUC1 3I< (1) 37 (1)
PHPTUC2 3I< (2) 37 (2)
Loss of load supervi-
sion
LOFLPTUC1 3I< (1) 37 (1)
LOFLPTUC2 3I< (2) 37 (2)
Motor load jam pro-
tection
JAMPTOC1 Ist> (1) 51LR (1)
Motor start-up super-
vision
STTPMSU1 Is2t n< (1) 49,66,48,51LR (1)
Phase reversal pro-
tection
PREVPTOC1 I2>> (1) 46R (1)
Thermal overload
protection for motors
MPTTR1 3Ith>M (1) 49M (1)
Stabilized and instan-
taneous differential
protection for ma-
chines
MPDIF1 3dl>M/G (1) 87M/G (1)
High-impedance/
flux-balance based
differential protec-
tion for motors
MHZPDIF1 3dIHi>M (1) 87MH (1)
Stabilized and instan-
taneous differential
protection for two-
winding transformers
TR2PTDF1 3dI>T (1) 87T (1)
Numerical stabilized
low-impedance re-
stricted earth-fault
protection
LREFPNDF1 dIoLo> (1) 87NL (1)
LREFPNDF2 dIoLo> (2) 87NL (2)
Table continues on the next page
Introduction 1MRS757644 H
28 620 series
Technical Manual