32. Functions, codes and symbols
Table 106. Functions included in the relay
Function IEC 61850 IEC 60617 IEC-ANSI
Protection
Three-phase non-directional overcurrent protection, low
stage
PHLPTOC1 3I> (1) 51P-1 (1)
Three-phase non-directional overcurrent protection, high
stage
PHHPTOC1 3I>> (1) 51P-2 (1)
PHHPTOC2 3I>> (2) 51P-2 (2)
Three-phase non-directional overcurrent protection,
instantaneous stage
PHIPTOC1 3I>>> (1) 50P/51P (1)
Three-phase directional overcurrent protection, low stage DPHLPDOC1 3I> -> (1) 67-1 (1)
DPHLPDOC2 3I> -> (2) 67-1 (2)
Three-phase directional overcurrent protection, high stage DPHHPDOC1 3I>> -> (1) 67-2 (1)
Non-directional earth-fault protection, low stage EFLPTOC1 Io> (1) 51N-1 (1)
EFLPTOC2 Io> (2) 51N-1 (2)
Non-directional earth-fault protection, high stage EFHPTOC1 Io>> (1) 51N-2 (1)
Non-directional earth-fault protection, instantaneous stage EFIPTOC1 Io>>> (1) 50N/51N (1)
Directional earth-fault protection, low stage DEFLPDEF1 Io> -> (1) 67N-1 (1)
DEFLPDEF2 Io> -> (2) 67N-1 (2)
Directional earth-fault protection, high stage DEFHPDEF1 Io>> -> (1) 67N-2 (1)
Admittance-based earth-fault protection EFPADM1 Yo> -> (1) 21YN (1)
EFPADM2 Yo> -> (2) 21YN (2)
EFPADM3 Yo> -> (3) 21YN (3)
Wattmetric-based earth-fault protection WPWDE1 Po> -> (1) 32N (1)
WPWDE2 Po> -> (2) 32N (2)
WPWDE3 Po> -> (3) 32N (3)
Transient/intermittent earth-fault protection INTRPTEF1 Io> -> IEF (1) 67NIEF (1)
Harmonics-based earth-fault protection HAEFPTOC1 Io>HA (1) 51NHA (1)
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> (1) 46PD (1)
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)
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