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Section 2
Available functions
Note that not all functions included in the tables below have
commissioning information available.
2.1
Back-up protection functions
IEC 61850 or
Function name
ANSI
Function description
Breaker
REQ650
REQ650 (A01
A)
3Ph/1CB/1BB
REQ650 (A11
A)
1Ph/1CB/1BB
REQ650 (B11
A)
1Ph/1CB/2BB
Current protection
PHPIOC
50
Instantaneous phase overcurrent protection, 3–phase
output
0–1
1
SPTPIOC
50
Instantaneous phase overcurrent protection, phase
segregated output
0–1
1
1
OC4PTOC
51/67
Four step phase overcurrent protection, 3-phase
output
0–1
1
OC4SPTOC
51/67
Four step phase overcurrent protection, phase
segregated output
0–1
1
1
EFPIOC
50N
Instantaneous residual overcurrent protection
0–1
1
1
1
EF4PTOC
51N/67N
Four step residual overcurrent protection, zero/
negative sequence direction
0–1
1
1
1
SDEPSDE
67N
Sensitive directional residual overcurrent and power
protection
0–1
1
1
1
LCPTTR
26
Thermal overload protection, one time constant,
Celsius
0–1
1
1
1
LFPTTR
26
Thermal overload protection, one time constant,
Fahrenheit
0–1
1
1
1
CCRBRF
50BF
Breaker failure protection, 3–phase activation and
output
0–1
1
CSPRBRF
50BF
Breaker failure protection, phase segregated
activation and output
0–1
1
1
STBPTOC
50STB
Stub protection
0–1
1
1
1
Table continues on next page
1MRK 505 293-UUS A
Section 2
Available functions
13
Commissioning manual