3.2 Back-up protection functions
IEC 61850 ANSI Function description Generator
REG670
REG670 (A20)
REG670 (B30)
REG670 (C30)
Current protection
PHPIOC 50 Instantaneous phase
overcurrent protection
0-4 1 2 2
OC4PTOC
51_67
1)
Four step phase overcurrent
protection
0-6 4 4 4
EFPIOC 50N Instantaneous residual
overcurrent protection
0-2 1 2 2
EF4PTOC 51N
67N
2)
Four step residual overcurrent
protection
0-6 1 5 5
NS4PTOC 46I2 Four step directional negative
phase sequence overcurrent
protection
0-2
1-C41 2-C42 2-C42
SDEPSDE 67N Sensitive directional residual
overcurrent and power
protection
0-2
1-C16 1-C16 1-C16
TRPTTR 49 Thermal overload protection,
two time constant
0-3 1 2 3
CCRBRF 50BF Breaker failure protection 0-4 2 4 4
STBPTOC 50STB Stub protection
CCPDSC 52PD Pole discordance protection 0-4 2 2 2
GUPPDUP 37 Directional underpower
protection
0-4 2 4 4
GOPPDOP 32 Directional overpower
protection
0-4 2 4 4
BRCPTOC 46 Broken conductor check
NS2PTOC 46I2 Negative sequence time
overcurrent protection for
machines
0-2
1 1 1
AEGPVOC 50AE Accidental energizing protection
for synchronous generator
0-2 1 1 1
VRPVOC 51V Voltage restrained overcurrent
protection
0-3 3-C36 3-C36 3-C36
GSPTTR 49S Stator overload protection 0-1 1-C37 1-C37 1-C37
GRPTTR 49R Rotor overload protection 0–1 1-C38 1-C38 1-C38
Voltage protection
UV2PTUV 27 Two step undervoltage
protection
0-2 2 2 2
OV2PTOV 59 Two step overvoltage protection 0-2 2 2 2
Table continues on next page
Section 3 1MRK502053-UEN B
Available functions
30 Generator protection REG670 2.0 IEC
Commissioning manual