Function IEC 61850 IEC 60617 ANSI
Phase discontinuity protection PDNSPTOC I2/I1> 46PD
Residual overvoltage protection ROVPTOV Uo> 59G/59N
Three-phase undervoltage protection PHPTUV 3U< 27
Three-phase overvoltage variation protection PHVPTOV 3Urms> 59.S1
Three-phase overvoltage protection PHPTOV 3U> 59
Positive-sequence overvoltage protection PSPTOV U1> 59PS
Positive-sequence undervoltage protection PSPTUV U1< 27PS
Negative-sequence overvoltage protection NSPTOV U2> 47,59NS
Frequency protection FRPFRQ f>/f<,df/dt 81
Three-phase voltage-dependent overcurrent protection PHPVOC 3I(U)> 51V
Overexcitation protection OEPVPH U/f> 24
Three-phase thermal protection for feeders, cables and distri-
bution transformers
T1PTTR 3Ith>F 49F
Three-phase thermal overload protection, two time constants T2PTTR 3Ith>T/G/C 49T/G/C
Three-phase overload protection for shunt capacitor banks COLPTOC 3I>3I< 51,37,86C
Current unbalance protection for shunt capacitor banks CUBPTOC dI>C 60N
Three-phase current unbalance protection for shunt capacitor
banks
HCUBPTOC 3dI>C 60P
Shunt capacitor bank switching resonance protection, current
based
SRCPTOC TD> 55ITHD
Compensated neutral unbalance voltage protection CNUPTOV CNU> 59NU
Directional negative- sequence overcurrent protection DNSPDOC I2>-> 67Q
Low-voltage ride- through protection LVRTPTUV UU 27RT
Voltage vector shift protection VVSPPAM VS 78VS
Directional reactive power undervoltage protection DQPTUV Q>-> ,3U< 32Q,27
Reverse power/ directional overpower protection DOPPDPR P>/Q> 32R/32O
Underpower protection DUPPDPR P< 32U
Three-phase under impedance protection UZPDIS ZZ 21G
Directional negative sequence impedance protection DNZPDIS Z2-> Z2Q
Three-phase under excitation 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
Generator shaft leakage current GSLPTOC I>,GS 38, 51
Thermal overload protection for rotors RPTTR 3Ith>R 49R
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
Table continues on the next page
1MRS759142 F Introduction
REX640
Technical Manual
35
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