Table 202. Current functions
Function Function
identification
Ordering no Position Available
qty
Selected
qty
Notes and rules
Instantaneous phase overcurrent protection PHPIOC 1MRK005910-AD 1 0-4
Directional phase overcurrent protection, four steps OC4PTOC 1MRK005910-BC 2 0-6
Instantaneous residual overcurrent protection EFPIOC 1MRK005910-DD 4 0-2
Directional residual overcurrent protection, four steps EF4PTOC 1MRK005910-EF 5 0-6
Directional negative phase sequence overcurrent protection,
four steps
NS4PTOC 1MRK005910-FC 6 0-2
Sensitive directional residual overcurrent and power
protection
SDEPSDE 1MRK005910-GA 7 0-2
Thermal overload protection, two time constants TRPTTR 1MRK005910-HC 10 0-3
Breaker failure protection CCRBRF 1MRK005910-LC 11 0-4
Pole discordance protection CCPDSC 1MRK005910-PA 14 0-4
Directional underpower protection GUPPDUP 1MRK005910-RA 15 0-4
Directional overpower protection GOPPDOP 1MRK005910-TA 16 0-4
Negative sequence time overcurrent protection for machines,
two steps
NS2PTOC 1MRK005910-VB 19 0-2
Accidental energizing protection for synchronous generator AEGPVOC 1MRK005910-WA 20 0-2
Voltage restrained overcurrent protection VRPVOC 1MRK005910-XA 21 0-3
Stator overload protection GSPTTR 1MRK005910-ZB 22 0-1
Rotor overload protection GRPTTR 1MRK005910-YB 23 0-1
Average power transient earth fault protection APPTEF 1MRK006940-LA 24 0-1
Table 203. Voltage protection
Position 1 2 3 4 5 6 7 8
D 0 0
Table 204. Voltage functions
Function Function
identification
Ordering no Position Available
qty
Selected
qty
Notes and rules
Two step undervoltage protection UV2PTUV 1MRK005912-AA 1 0-2
Two step overvoltage protection OV2PTOV 1MRK005912-BA 2 0-2
Residual overvoltage protection, two steps ROV2PTOV 1MRK005912-CE 3 0-3
Overexcitation protection OEXPVPH 1MRK005912-DA 4 0-2
Voltage differential protection VDCPTOV 1MRK005912-EB 5 0-2
100% Stator earth fault protection, 3rd harmonic based STEFPHIZ 1MRK005912-FB 6 0-1
Table 205. Unbalance protection
Position 1 2 3 4
T 0 0 0 0
Table 206. Frequency protection
Position 1 2 3 4
E
Table 207. Frequency functions
Function Function
identification
Ordering no Position Available
qty
Selected
qty
Notes and rules
Underfrequency protection SAPTUF 1MRK005914-AC 1 0-6
Overfrequency protection SAPTOF 1MRK005914-BB 2 0-6
Rate-of-change of frequency protection SAPFRC 1MRK005914-CB 3 0-6
Frequency time accumulation protection FTAQFVR 1MRK005914-DB 4 00-12
Table 208. Multipurpose protection
Position 1
F
Generator protection REG670
1MRK 502 074-BEN M
Hitachi Power Grids 141
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