Back-up protection functions
IEC 61850 ANSI Function description Line Differential
RED670
(Customized)
RED670 (A31)
RED670 (B31)
RED670 (A32)
RED670 (B32)
Current protection
PHPIOC 50 Instantaneous phase overcurrent
protection
0-3 1 1 1 1
OC4PTOC
51_67
1)
Four step phase overcurrent protection 0-3 1 1 1 1
EFPIOC 50N Instantaneous residual overcurrent
protection
0-1 1-C24 1-C24 1-C24 1-C24
EF4PTOC 51N
67N
2)
Four step residual overcurrent protection 0-3 1-C24 1-C24 1-C24 1-C24
NS4PTOC 46I2 Four step directional negative phase
sequence overcurrent protection
0-2 1-C24 1-C24 1-C24 1-C24
SDEPSDE 67N Sensitive directional residual overcurrent
and power protection
0-1 1-C16 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 2 1 2
STBPTOC 50STB Stub protection 0-2 1-B11 1B
1-B11
1-B11 1B
1-B11
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
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
OEXPVPH 24 Overexcitation protection 0-1 1-D03 1-D03 1-D03 1-D03
VDCPTOV 60 Voltage differential protection 0-2 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 2-E02 2-E02 2-E02 2-E02
SAPTOF 81 Overfrequency protection 0-6 2-E02 2-E02 2-E02 2-E02
SAPFRC 81 Rate-of-change frequency protection 0-2 2-E02 2-E02 2-E02 2-E02
1MRK 505 346-BEN -
Line differential protection RED670 2.1 IEC
Product version: 2.1
12 ABB