ABB REC 670 Bay control IED Functions

Functions 

• Differential protection

- High impedance differential protection (PDIF,87X)

• Current protection

- Instantaneous phase overcurrent protection(PIOC,50)

- Four step phase overcurrent protection(POCM,51/67)

- Instantaneous residual overcurrent protection(PIOC,50N)

- Four step residual overcurrent protection(PEFM,51N/67N)

- Thermal overload protection, one time constant (PTTR,26)

- Thermal overload protection, two time constants (PTTR,49)

- Breaker failure protection (RBRF,50BF)

- Stub protection (PTOC, 50STB)

- Pole discordance protection (RPLD,52PD)

• Voltage protection

- Two step undervoltage protection (PUVM,27)

- Two step overvoltage protection (POVM,59)

- Two step residual overvoltage protection(POVM,59N)

• Frequency protection

- Underfrequency protection (PTUF,81)

- Overfrequency protection (PTOF,81)

- Rate-of-change frequency protection(PFRC,81)

• Multipurpose protection

- General current and voltage protection(GAPC)

• Secondary system supervision

- Current circuit supervision (RDIF)

- Fuse failure supervision (RFUF)

• Control

- Synchrocheck and energizing check(RSYN,25)

- Autorecloser (RREC,79)

- Apparatus control for single bay, max 8 app.(1CB) incl. Interlocking (APC8)

- Apparatus control for single bay, max 15 app.(2CBs) incl. Interlocking (APC15)

- Apparatus control for up to 6 bays, max 30app. (6CBs) incl. Interlocking (APC30)

• Logic

- Tripping logic (PTRC, 94)

- Trip matrix logic

- Configurable logic blocks

- Fixed signal function block

• Monitoring

- Measurements (MMXU)

- Supervision of mA input signals (MVGGIO)

- Event counter (GGIO)

- Event function

- Disturbance report (RBDR)

- Fault locator (RFLO)