Section 2 Available functionsNote that not all functions included in the tables below havecommissioning information available.2.1 Back-up protection functionsIEC 61850/Function blocknameANSI Function description BayREC650 (A01)1CBAREC650 (A02)1CBABREC650 (A07)BCABCurrent protectionPHPIOC 50 Instantaneous phase overcurrent protection 1 1 1OC4PTOC 51/67 Four step directional phase overcurrent protection 1 1 1EFPIOC 50N Instantaneous residual overcurrent protection 1 1 1EF4PTOC 51N/67N Four step directional residual overcurrent protection 1 1SDEPSDE 67N Sensitive directional residual overcurrent and power protection 1 1 1LPTTR 26 Thermal overload protection, one time constant 1 1 1CCRBRF 50BF Breaker failure protection 1 1 1STBPTOC 50STB Stub protection 1 1 1CCRPLD 52PD Pole discordance protection 1 1 1BRCPTOC 46 Broken conductor check 1 1 1GUPPDUP 37 Directional underpower protection 1 1 1GOPPDOP 32 Directional overpower protection 1 1 1DNSPTOC 46 Negative sequence based overcurrent function 1 1 1Voltage protectionUV2PTUV 27 Two step undervoltage protection 1 1 1OV2PTOV 59 Two step overvoltage protection 1 1 1ROV2PTOV 59N Two step residual overvoltage protection 1 1 1LOVPTUV 27 Loss of voltage check 1 1 1Frequency protectionSAPTUF 81 Underfrequency function 2 2 2SAPTOF 81 Overfrequency function 2 2 2SAPFRC 81 Rate-of-change frequency protection 2 2 21MRK 511 248-UEN - Section 2Available functions13Commissioning Manual
