Table 188. Differential functions
Function Function
identication
Ordering no Position Available
qty
Selected
qty
Notes and rules
Transformer differential protection, two winding T2WPDIF 1MRK005904-FC 4 0-2
Transformer differential protection, three winding T3WPDIF 1MRK005904-GB 5 0-2
High impedance differential protection, single phase HZPDIF 1MRK005904-HB 6 0-6
Generator differential protection GENPDIF 1MRK005904-Kb 7 0-2
Restricted earth fault protection, low impedance REFPDIF 1MRK005904-LC 8 0-3
Table 189. Impedance protection
Position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
B 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Table 190. Impedance functions
Note: Only 1 alternative may be selected
Function Function
identication
Ordering no Position Available
qty
Selected
qty
Notes and rules
Alternative 3 Distance protection, mho (mho for phase - phase fault and mho in parallel with quad for earth fault)
Full-scheme distance protection, mho characteristic ZMHPDIS 1MRK005907-FA 6 0-4
Directional impedance element for mho characteristic ZDMRDIR 1MRK005907-HA 8 0-2
Alternative 5 High speed distance protection, quadrilateral and mho
High speed distance protection, quad and mho characteristic ZMFPDIS 1MRK005907-SD 14 0-1
Alternative 6 High speed distance protection for series compensated lines, quadrilateral and mho
High speed distance protection for series comp. lines, quad and
mho characteristic
ZMFCPDIS 1MRK005907-RD 15 0-1
Optional with any alternative
Poleslip/out-of-step protection PSPPPAM 1MRK005908-CB 21 0-1
Out-of-step protection OOSPPAM 1MRK005908-GA 22 0-1
Loss of excitation LEXPDIS 1MRK005908-BB 23 0-2
Sensitive rotor earth fault protection, injection based ROTIPHIZ 1MRK005908-EB 24 0-1
100% stator earth fault protection, injection based STTIPHIZ 1MRK005908-FB 25 0-1
Underimpedance protection for generators and transformers ZGVPDIS 1MRK005907-TC 26 0-2
Table 191. Current protection
Position
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
C 00 0 0 00 0 0 0
Table 192. Current functions
Function
Function
identication
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-EE 5 0-6
Four step directional negative phase sequence overcurrent
protection
NS4PTOC 1MRK005910-FB 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-LA 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 NS2PTOC 1MRK005910-VA 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
1MRK 502 074-BEN A
Generator protection REG670 2.2 and Injection equipment REX060,
REX061, REX062
Product version: 2.2.1
ABB 125