Section 3
Available functions
GUID-F5776DD1-BD04-4872-BB89-A0412B4B5CC3 v1
The following tables list all the functions available in the IED. Those functions
that are not exposed to the user or do not need to be configured are not
described in this manual.
3.1
Back-up protection functions
GUID-A8D0852F-807F-4442-8730-E44808E194F0 v15
IEC 61850 or
function name
ANSI
Function description
Breaker
REQ650 (B11)
Current protection
PHPIOC
50
Instantaneous phase overcurrent protection
1
OC4PTOC
51_67
1)
Directional phase overcurrent protection, four steps
1
EFPIOC
50N
Instantaneous residual overcurrent protection
1
EF4PTOC
51N
67N
2)
Directional residual overcurrent protection, four steps
1
NS4PTOC
46I2
Four step directional negative phase sequence overcurrent protection
1
LCPTTR
26
Thermal overload protection, one time constant, Celsius
1
LFPTTR
26
Thermal overload protection, one time constant, Fahrenheit
1
CCRBRF
50BF
Breaker failure protection
1
STBPTOC
50STB
Stub protection
1
CCPDSC
52PD
Pole discordance protection
1
BRCPTOC
46
Broken conductor check
1
Voltage protection
UV2PTUV
27
Two step undervoltage protection
1
OV2PTOV
59
Two step overvoltage protection
1
ROV2PTOV
59N
Two step residual overvoltage protection
1
LOVPTUV
27
Loss of voltage check
1
1) 67 requires voltage
2) 67N requires voltage
1MRK 505 385-UEN C
Section 3
Available functions
Breaker protection REQ650
19
Commissioning manual
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