Back-up protection functions
IEC 61850 or
function name
ANSI
Function description
Line Distance
REL670
(Customized)
REL670 (A41)
REL670 (A42)
REL670 (B42)
REL670 (D42)
Current protection
PHPIOC
50
Instantaneous phase overcurrent protection
0-3
1
1
1
1
OC4PTOC
51_67
1)
Directional phase overcurrent protection, four steps
0-3
1
1
1
1
EFPIOC
50N
Instantaneous residual overcurrent protection
0-3
1
1
1
1
EF4PTOC
51N
67N
2)
Directional residual overcurrent protection, four
steps
0-3
1
1
1
1
NS4PTOC
46I2
Four step directional negative phase sequence
overcurrent protection
0-2
1
1
1
1
SDEPSDE
67N
Sensitive directional residual overcurrent and power
protection
0-1
1
1-C16
1-C16
1-C16
LCPTTR
26
Thermal overload protection, one time constant,
Celsius
0-2
1
1
1
1
LFPTTR
26
Thermal overload protection, one time constant,
Fahrenheit
0-2
1
1
1
1
CCRBRF
50BF
Breaker failure protection
0-2
1
1
2
1
STBPTOC
50STB
Stub protection
0-2
1
1
1B
1-B27
1
CCPDSC
52PD
Pole discordance protection
0-2
1
1
2
1
GUPPDUP
37
Directional underpower protection
0-2
1-C39
1-C39
1-C39
GOPPDOP
32
Directional overpower protection
0-2
1-C39
1-C39
1-C39
BRCPTOC
46
Broken conductor check
1
1
1
1
1
VRPVOC
51V
Voltage restrained overcurrent protection
0-3
1
1
1
1
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
ROV2PTOV
59N
Two step residual overvoltage protection
0-2
1
1
1
1
OEXPVPH
24
Overexcitation protection
0-1
1-D03
1-D03
1-D03
VDCPTOV
60
Voltage differential protection
0-2
2
2
2
LOVPTUV
27
Loss of voltage check
1
1
1
1
1
PAPGAPC
27
Radial feeder protection
0-1
Frequency protection
SAPTUF
81
Underfrequency protection
0-6
1B
3-E04
1B
3-E04
1B
3-E04
1B
3-E04
1MRK 506 372-BEN -
Line distance protection REL670 2.2
Product version: 2.2
12
ABB