2.2 Available functions
2.2.1 Main protection functions
IEC 61850 or
Function name
ANSI Function description Line Distance
REL650
REL650 (A01A)
3Ph/1CB
REL650 (A11A)
1Ph/1CB
REL650 (B01A)
3Ph/2CB
Impedance protection
ZQMPDIS 21 Five zone distance protection, quadrilateral and mho
characteristic
1 1 1 1
FDPSPDIS 21 Phase selection with load enchroachment, quadrilateral
characteristic
1 1 1 1
FMPSPDIS 21 Faulty phase identification with load enchroachment for mho 1 1 1 1
ZDARDIR 21 Additional distance protection directional function for earth
faults
1 1 1 1
ZDNRDIR 21D Directional impedance quadrilateral and mho 1 1 1 1
PPLPHIZ Phase preference logic 0–1 1 1 1
ZMRPSB 68 Power swing detection 0–1 1 1 1
ZCVPSOF Automatic switch onto fault logic, voltage and current based 1 1 1 1
2.2.2 Back-up protection functions
IEC 61850 or
Function name
ANSI Function description Line Distance
REL650
REL650 (A01A)
3Ph/1CB
REL650 (A11A)
1Ph/1CB
REL650 (B01A)
3Ph/2CB
Current protection
PHPIOC 50 Instantaneous phase overcurrent protection, 3–phase
output
0–1 1 1
SPTPIOC 50 Instantaneous phase overcurrent protection, phase
segregated output
0–1 1
OC4PTOC 51/67 Four step phase overcurrent protection, 3-phase
output
0–1 1 1
OC4SPTOC 51/67 Four step phase overcurrent protection, phase
segregated output
0–1 1
EFPIOC 50N Instantaneous residual overcurrent protection 0–1 1 1 1
Table continues on next page
Section 2 1MRK 506 334-UUS A
Application
30
Application manual