28. Functions, codes and symbols
Table 126. Functions included in the relay
Description IEC 61850 IEC 60617 ANSI
Protection
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/51P
Voltage dependent overcurrent protection PHPVOC I(U)> 51V
Three-phase directional overcurrent protection, low stage DPHLPDOC 3I> -> 67-1
Three-phase directional overcurrent protection, high stage DPHHPDOC 3I>> -> 67-2
Non-directional earth-fault protection, low stage EFLPTOC I0> 51N-1
Non-directional earth-fault protection, high stage EFHPTOC I0>> 51N-2
Non-directional earth-fault protection, instantaneous stage EFIPTOC I0>>> 50N/51N
Directional earth-fault protection, low stage DEFLPDEF I0> -> 67N-1
Directional earth-fault protection, high stage DEFHPDEF I0>> -> 67N-2
Third harmonic based stator earth-fault protection H3EFPSEF dUo(3H)>/Uo(3H)< 27/59THD
High-impedance based restricted earth-fault protection HREFPDIF dI0Hi> 87NH
Rotor earth-fault protection MREFPTOC Io>R 64R
Negative-sequence overcurrent protection for machines MNSPTOC I2>G/M 46G/46M
Three-phase thermal overload protection, two time constants T2PTTR 3Ith>T/G 49T/G
Three-phase current inrush detection INRPHAR 3I2f> 68
Transformer differential protection for two-winding transformers TR2PTDF 3dI>T 87T
High-impedance or flux-balance based differential protection for
machines MHZPDIF 3dIHi>G/M 87GH/87MH
Stabilized differential protection for machines MPDIF 3dI>G/M 87G/87M
Three-phase overvoltage protection PHPTOV 3U> 59
Three-phase undervoltage protection PHPTUV 3U< 27
Positive-sequence overvoltage protection PSPTOV U1> 47O+
Positive-sequence undervoltage protection PSPTUV U1< 47U+
Negative-sequence overvoltage protection NSPTOV U2> 47O-
Residual overvoltage protection ROVPTOV U0> 59G
Directional reactive power undervoltage protection DQPTUV Q>-->,3U< 32Q,27
Reverse power/directional overpower protection DOPPDPR P> 32R/32O
Underpower protection DUPPDPR P< 32U
Frequency gradient protection DAPFRC df/dt> 81R
Overfrequency protection DAPTOF f> 81O
Underfrequency protection DAPTUF f< 81U
Low voltage ride through protection function LVRTPTUV U<RT 27RT
Overexcitation protection OEPVPH U/f> 24
Generator Protection and Control
1MRS757583 C
Product version: 1.3
66 ABB
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