ABB REG670 - Page 15

Setting guideline........................................................................401
Section 10 Voltage protection........................................................ 403
Two step undervoltage protection UV2PTUV ................................403
Identification.............................................................................. 403
Application.................................................................................403
Setting guidelines...................................................................... 404
Equipment protection, such as for motors and generators...404
Disconnected equipment detection...................................... 404
Power supply quality ........................................................... 404
Voltage instability mitigation................................................. 404
Backup protection for power system faults...........................404
Settings for two step undervoltage protection...................... 405
Two step overvoltage protection OV2PTOV ..................................406
Identification.............................................................................. 406
Application.................................................................................406
Setting guidelines...................................................................... 407
Equipment protection, such as for motors, generators,
reactors and transformers.................................................... 408
Equipment protection, capacitors......................................... 408
Power supply quality............................................................ 408
High impedance earthed systems........................................ 408
The following settings can be done for the two step
overvoltage protection.......................................................... 408
Two step residual overvoltage protection ROV2PTOV ................. 410
Identification.............................................................................. 410
Application.................................................................................410
Setting guidelines...................................................................... 411
Equipment protection, such as for motors, generators,
reactors and transformersEquipment protection
for transformers.................................................................... 411
Equipment protection, capacitors......................................... 411
Stator earth-fault protection based on residual voltage
measurement....................................................................... 412
Power supply quality............................................................ 415
High impedance earthed systems........................................ 415
Direct earthed system.......................................................... 416
Settings for two step residual overvoltage protection...........417
Overexcitation protection OEXPVPH ............................................ 419
Identification.............................................................................. 419
Application.................................................................................419
Setting guidelines...................................................................... 421
Recommendations for input and output signals................... 421
Settings................................................................................ 422
Table of contents
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 9
Application manual