Disconnected equipment detection............................................ 438
Power supply quality ..................................................................438
Voltage instability mitigation....................................................... 438
Backup protection for power system faults.................................439
Settings for two step undervoltage protection............................ 439
Two step overvoltage protection OV2PTOV (59)................................. 440
Identification.................................................................................... 441
Application....................................................................................... 441
Setting guidelines............................................................................ 442
Equipment protection, such as for motors, generators,
reactors and transformers.......................................................... 442
Equipment protection, capacitors............................................... 442
Power supply quality...................................................................443
High impedance grounded systems........................................... 443
The following settings can be done for the two step
overvoltage protection................................................................ 443
Two step residual overvoltage protection ROV2PTOV (59N)...............445
Identification.................................................................................... 445
Application....................................................................................... 445
Setting guidelines............................................................................ 446
Equipment protection, such as for motors, generators,
reactors and transformersEquipment protection
measurement..............................................................................446
Power supply quality...................................................................450
High impedance grounded systems........................................... 450
Direct grounded system..............................................................451
Settings for two step residual overvoltage protection.................452
Overexcitation protection OEXPVPH (24)............................................ 454
Identification.................................................................................... 454
Application....................................................................................... 454
Setting guidelines............................................................................ 456
Recommendations for input and output signals......................... 456
Settings.......................................................................................457
Service value report....................................................................458
Setting example..........................................................................458
Voltage differential protection VDCPTOV (60)..................................... 460
Table of contents
10
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Application manual
Summary of Contents for RELION 670 SERIES REG670
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