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
Summary of Contents for REG670 2.0 IEC
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