IEC 61850 or
function name
ANSI Function description Generator
REG670 (Customized)
ROTIPHIZ 64R Sensitive rotor ground fault protection, injection based 0-1
STTIPHIZ 64S 100% stator ground fault protection, injection based 0-1
ZGVPDIS 21 Underimpedance protection for generators and transformers 0–2
3.2 Back-up protection functions
GUID-A8D0852F-807F-4442-8730-E44808E194F0 v13
IEC 61850 or
function name
ANSI Function description
REG670 (Customized)
Current protection
PHPIOC 50 Instantaneous phase overcurrent protection 0-4
OC4PTOC
51_67
1)
Directional phase overcurrent protection, four steps 0-6
EFPIOC 50N Instantaneous residual overcurrent protection 0-2
EF4PTOC 51N
67N
2)
Directional residual overcurrent protection, four steps 0-6
NS4PTOC 46I2 Four step directional negative phase sequence overcurrent
protection
0-2
SDEPSDE 67N Sensitive directional residual overcurrent and power protection 0-2
TRPTTR 49 Thermal overload protection, two time constants 0-3
CCRBRF 50BF Breaker failure protection 0-4
CCPDSC 52PD Pole discordance protection 0-4
GUPPDUP 37 Directional underpower protection 0-4
GOPPDOP 32 Directional overpower protection 0-4
NS2PTOC 46I2 Negative sequence time overcurrent protection for machines 0-2
AEGPVOC 50AE Accidental energizing protection for synchronous generator 0-2
VRPVOC 51V Voltage restrained overcurrent protection 0-3
GSPTTR 49S Stator overload protection 0-1
GRPTTR 49R Rotor overload protection 0-1
Voltage protection
UV2PTUV 27 Two step undervoltage protection 0-2
OV2PTOV 59 Two step overvoltage protection 0-2
Table continues on next page
Section 3 1MRK 502 073-UUS A
Available functions
34 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual