IEC 61850 or
function name
ANSI Function description Busbar
REB670 (Customized)
EF4PTOC 51N
67N
2)
Directional residual overcurrent protection, four steps 0-8
NS4PTOC 46I2 Four step directional negative phase sequence overcurrent
protection
0-8
TRPTTR 49 Thermal overload protection, two time constants 0-2
CCRBRF 50BF Breaker failure protection 0-8
CCSRBRF 50BF Breaker failure protection, single phase version 0-24
GUPPDUP 37 Directional underpower protection 0-4
GOPPDOP 32 Directional overpower protection 0-4
CBPGAPC Capacitor bank protection 0-2
Voltage protection
UV2PTUV 27 Two step undervoltage protection 0-2
OV2PTOV 59 Two step overvoltage protection 0-2
ROV2PTOV 59N Two step residual overvoltage protection 0-2
VDCPTOV 60 Voltage differential protection 0-2
LOVPTUV 27 Loss of voltage check 0-2
Frequency protection
SAPTUF 81 Underfrequency protection 0-6
SAPTOF 81 Overfrequency protection 0-6
SAPFRC 81 Rate-of-change of frequency protection 0-6
Multipurpose protection
CVGAPC General current and voltage protection 0-6
1) 67 requires voltage
2) 67N requires voltage
1MRK 505 370-UUS A Section 2
Application
Busbar protection REB670 2.2 ANSI 41
Application manual