2.2
Available functions
2.2.1
Back-up protection functions
IEC 61850 or
Function name
ANSI
Function description
Breaker
REQ650
REQ650 (A01) 3Ph/1CB/1BB
REQ650 (A11) 1Ph/1CB/1BB
REQ650 (B11) 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
CCRPLD
52PD
Pole discordance protection
0–1
1
1
1
BRCPTOC
46
Broken conductor check
0–1
1
1
1
GUPPDUP
37
Directional underpower protection
0–1
1
1
1
GOPPDOP
32
Directional overpower protection
0–1
1
1
1
DNSPTOC
46
Negative sequence based overcurrent function
0–1
1
1
1
Voltage protection
UV2PTUV
27
Two step undervoltage protection
0–1
1
1
1
OV2PTOV
59
Two step overvoltage protection
0–1
1
1
1
ROV2PTOV
59N
Two step residual overvoltage protection
0–1
1
1
1
LOVPTUV
27
Loss of voltage check
0–1
1
1
1
Frequency protection
Table continues on next page
1MRK 505 291-UEN A
Section 2
Application
25
Application manual
Содержание Relion REQ650
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