Optional functions
Differential protection
Rule: One and only one of Transformer differential protection or Generator differential protection can be ordered
Transformer differential protection, three winding T3WPDIF Qty: 1MRK 004 904-BB
Generator differential protection GENPDIF Qty: 1MRK 004 904-EA
Restricted earth fault protection, low impedance REFPDIF Qty: 1MRK 004 904-CA
1Ph High impedance differential protection HZPDIF Qty: 1MRK 004 904-DA
Impedance protection
Power swing detection ZMRPSB Qty: 1MRK 004 906-GA
Underimpedance protection for generators and transformers ZGCPDIS Qty: 1MRK 004 906–SA
Loss of excitation LEXPDIS Qty: 1MRK 004 906-LB
Out-of-step protection OOSPPAM Qty: 1MRK 004 906-MB
Load enchroachment LEPDIS Qty: 1MRK 004 906-NA
Current protection
Four step phase overcurrent protection, 3–phase output OC4PTOC
Qty:
1MRK 004 908-BC
Four step residual overcurrent protection, zero/negative sequence direction EF4PTOC
Qty:
1MRK 004 908-FA
Sensitive directional residual overcurrent and power protection SDEPSDE Qty: 1MRK 004 908-EB
Thermal overload protection, two time constants TRPTTR
Qty:
1MRK 004 908-KB
Breaker failure protection, 3–phase activation and output CCRBRF Qty: 1MRK 004 908-LA
Pole discordance protection CCRPLD Qty: 1MRK 004 908-NA
Directional underpower protection GUPPDUP Qty: 1MRK 004 908-RB
Directional overpower protection GOPPDOP
Qty:
1MRK 004 908-SB
Voltage protection
Two step undervoltage protection UV2PTUV
Qty: 1MRK 004 910-AB
Two step overvoltage protection OV2PTOV Qty: 1MRK 004 910-BB
Two step residual overvoltage protection ROV2PTOV
Qty:
1MRK 004 910-CB
Overexcitation protection OEXPVPH Qty: 1MRK 004 910-DC
100% Stator earth faule protection, 3
rd
harmonic based STEFPHIZ
Qty: 1MRK 004 910-FA
Generator protection REG650
1MRK 502 050-BEN B
Product version: 1.3
64 ABB