3.2
Back-up protection functions
IEC 61850
ANSI
Function description
Line Distance
REL670 (Customized)
REL670 (A21)
REL670 (A31)
REL670 (B31)
REL670 (A32)
REL670 (B32)
Current protection
PHPIOC
50
Instantaneous phase
overcurrent protection
0-3
1
1
1
1
1
OC4PTOC
51_67
1)
Four step phase
overcurrent protection
0-3
1
1
1
1
1
EFPIOC
50N
Instantaneous
residual overcurrent
protection
0-3
1
1
1
1
1
EF4PTOC
51N
67N
2)
Four step residual
overcurrent protection
0-3
1
1
1
1
NS4PTOC
46I2
Four step directional
negative phase
sequence overcurrent
protection
0-2
1-C41
1-C41
1-C41
1-C41
SDEPSDE
67N
Sensitive directional
residual overcurrent
and power protection
0-1
1
1-C16
1-C16
1-C16
1-C16
LCPTTR
26
Thermal overload
protection, one time
constant, Celsius
0–2
1
1
1
1
1
LFPTTR
26
Thermal overload
protection, one time
constant, Fahrenheit
0–2
1
1
1
1
1
CCRBRF
50BF
Breaker failure
protection
0-2
1
1
2
1
2
STBPTOC
50STB
Stub protection
0-1
1
1
CCPDSC
52PD
Pole discordance
protection
0-2
1
2
1
2
GUPPDUP
37
Directional
underpower protection
0-2
1-C17
1-C17
1-C17
1-C17
GOPPDOP
32
Directional overpower
protection
0-2
1-C17
1-C17
1-C17
1-C17
BRCPTOC
46
Broken conductor
check
1
1
1
1
1
1
VRPVOC
51V
Voltage restrained
overcurrent protection
0-3
Voltage protection
UV2PTUV
27
Two step
undervoltage
protection
0-2
1
1
1
1
OV2PTOV
59
Two step overvoltage
protection
0-2
1
1
1
1
Table continues on next page
1MRK 506 355-UEN A
Section 3
Available functions
Line distance protection REL670 2.1 IEC
31
Commissioning manual
Содержание Relion 670 Series REL670
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