Current protection
Instantaneous phase overcurrent protection, 3–phase output
(PHPIOC, 50)
Qty: 1MRK 004 908-AA
Four step phase overcurrent protection, 3–phase output
(OC4PTOC, 51/67)
Qty: 1MRK 004 908-BB
Instantaneous residual overcurrent protection (EFPIOC, 50N) Qty: 1MRK 004 908-CA
Four step residual overcurrent protection, zero/negative
sequence direction (EF4PTOC, 51N/67N)
Qty: 1MRK 004 908-FA
Sensitive directional residual overcurrent and power
protection (SDEPSDE, 67N)
Qty: 1MRK 004 908-EA
Thermal overload protection, one time constant, Celsius
(LCPTTR, 26)
Qty: 1MRK 004 908-HC
Thermal overload protection, one time constant, Fahrenheit
(LFPTTR, 26)
Qty: 1MRK 004 908-HD
Breaker failure protection, 3–phase activation and output
(CCRBRF, 50BF)
Qty: 1MRK 004 908-LA
Stub protection (STBPTOC, 50STB) Qty: 1MRK 004 908-MA
Pole discrepancy protection (CCRPLD, 52PD) Qty: 1MRK 004 908-NA
Broken conductor check (BRCPTOC, 46) Qty: 1MRK 004 908-PA
Directional underpower protection (GUPPDUP, 37) Qty: 1MRK 004 908-RB
Directional overpower protection (GOPPDUP, 32) Qty: 1MRK 004 908-SB
Negative sequence based overcurrent function (DNSPTOC,
46)
Qty: 1MRK 004 908-TA
Voltage protection
Two step undervoltage protection (UV2PTUV, 27)
Qty: 1MRK 004 910-AB
Two step overvoltage protection (OV2PTOV, 59) Qty: 1MRK 004 910-BB
Two step residual overvoltage protection (ROV2PTOV, 59N) Qty: 1MRK 004 910-CB
Loss of voltage check (LOVPTUV, 27) Qty: 1MRK 004 910-EA
Frequency protection
Underfrequency protection (SAPTUF, 81)
Qty:
1MRK 004 912-AA
Overfrequency protection (SAPTOF, 81)
Qty:
1MRK 004 912-BA
Rate-of-change frequency protection (SAPFRC, 81)
Qty:
1MRK 004 912-CA
Bay control REC650 ANSI 1MRK 511 265-BUS B
Product version: 1.2
ABB 99