Function
IEC 61850
IEC 60617
IEC-ANSI
Admittance based earth-fault
protection
EFPADM1
Yo> -> (1)
21YN (1)
EFPADM2
Yo> -> (2)
21YN (2)
EFPADM3
Yo> -> (3)
21YN (3)
Transient / intermittent earth-fault
protection
INTRPTEF1
Io> -> IEF
67NIEF
Non-directional (cross-country) earth
fault protection, using calculated Io
EFHPTOC1
Io>> (1)
51N-2 (1)
Negative-sequence overcurrent
protection
NSPTOC1
I2> (1)
46 (1)
NSPTOC2
I2> (2)
46 (2)
Phase discontinuity protection
PDNSPTOC1
I2/I1>
46PD
Residual overvoltage protection
ROVPTOV1
Uo> (1)
59G (1)
ROVPTOV2
Uo> (2)
59G (2)
ROVPTOV3
Uo> (3)
59G (3)
Three-phase undervoltage protection
PHPTUV1
3U< (1)
27 (1)
PHPTUV2
3U< (2)
27 (2)
PHPTUV3
3U< (3)
27 (3)
Three-phase overvoltage protection
PHPTOV1
3U> (1)
59 (1)
PHPTOV2
3U> (2)
59 (2)
PHPTOV3
3U> (3)
59 (3)
Positive-sequence undervoltage
protection
PSPTUV1
U1< (1)
47U+ (1)
PSPTUV2
U1< (2)
47U+ (2)
Negative-sequence overvoltage
protection
NSPTOV1
U2> (1)
47O- (1)
NSPTOV2
U2> (2)
47O- (2)
Frequency protection
FRPFRQ1
f>/f<,df/dt (1)
81 (1)
FRPFRQ2
f>/f<,df/dt (2)
81 (2)
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)
Three-phase thermal protection for
feeders, cables and distribution
transformers
T1PTTR1
3Ith>F
49F
Three-phase thermal overload
protection for power transformers,
two time constants
T2PTTR1
3Ith>T
49T
Negative-sequence overcurrent
protection for motors
MNSPTOC1
I2>M (1)
46M (1)
MNSPTOC2
I2>M (2)
46M (2)
Loss of load supervision
LOFLPTUC1
3I<
37
Motor load jam protection
JAMPTOC1
Ist>
51LR
Motor start-up supervision
STTPMSU1
Is2t n<
49,66,48,51LR
Phase reversal protection
PREVPTOC1
I2>>
46R
Table continues on next page
Section 1
1MRS756708 C
Introduction
12
615 series
Operation Manual