Back-up protection functions
IEC 61850 ANSI Function description Transformer
RET670
RET670 (A10)
RET670 (A30)
RET670 (B30)
RET670 (A40)
RET670 (B40)
RET670 (A25)
Current protection
PHPIOC 50 Instantaneous phase
overcurrent protection
0-8 3 2 2 3 3 2-C19
OC4PTOC
51_67
1)
Four step phase overcurrent
protection
0-8 3 2 2 3 3 2-C19
EFPIOC 50N Instantaneous residual
overcurrent protection
0-8 3 2 2 3 3 2-C19
EF4PTOC 51N
67N
2)
Four step residual overcurrent
protection
0-8 3 2 2 3 3 2-C19
NS4PTOC 46I2 Four step directional negative
phase sequence overcurrent
protection
0-8 2-C42 2-C42 2-C42 3-C43 3-C43 2-C19
SDEPSDE 67N Sensitive directional residual
overcurrent and power
protection
0-3 1 1-C16 1-C16 1-C16 1-C16 1-C16
LCPTTR 26 Thermal overload protection,
one time constant, Celsius
0–2
LFPTTR 26 Thermal overload protection,
one time constant, Fahrenheit
0–2
TRPTTR 49 Thermal overload protection,
two time constant
0-6 1 1B
1-C05
1B
1-C05
2B
1-C05
2B
1-C05
CCRBRF 50BF Breaker failure protection 0-6 3 2 4 3 6
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 1
CBPGAPC Capacitor bank protection 0-6
NS2PTOC 46I2 Negative sequence time
overcurrent protection for
machines
0-2
VRPVOC 51V Voltage restrained overcurrent
protection
0-3
Voltage protection
UV2PTUV 27 Two step undervoltage
protection
0-3 1-D01 1B
1-D01
1B
1-D01
1B
2-D02
1B
2-D02
2-D02
OV2PTOV 59 Two step overvoltage protection 0-3 1-D01 1B
1-D01
1B
1-D01
1B
1-D02
1B
1-D02
2-D02
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
ABB 13
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