ABB RET670 Installation And Commissioning Manual

Full scheme distance protection, mho characteristic
ZMHPDIS..................................................................................125
Phase-to-phase faults..........................................................125
Phase-to-earth faults............................................................126
Faulty phase identification with load encroachment
FMPSPDIS ...............................................................................127
Power swing detection ZMRPSB
..............................................128
Verifying the settings............................................................129
Testing the power swing detection function ZMRPSB ........130
Testing the tR1 timer............................................................130
Testing the block input, interaction between FDPSPDIS
or FRPSPDIS and ZMRPSB ...............................................131
Completing the test..............................................................131
Power swing logic ZMRPSL......................................................131
Testing the carrier send and trip signals..............................132
Testing the influence of the residual overcurrent
protection..............................................................................132
Controlling of the underreaching zone.................................133
Completing the test..............................................................133
Phase preference logic PPLPHIZ .............................................133
Completing the test..............................................................134
Current protection...........................................................................135
Instantaneous phase overcurrent protection PHPIOC .............135
Measuring the operate limit of set values.............................135
Completing the test..............................................................135
Four step phase overcurrent protection OC4PTOC .................135
Verifying the settings............................................................135
Completing the test..............................................................137
Instantaneous residual overcurrent protection EFPIOC ...........137
Measuring the operate limit of set values.............................137
Completing the test..............................................................137
Four step residual overcurrent protection EF4PTOC ...............138
Four step directional overcurrent protection.........................138
Four step non-directional overcurrent protection..................138
Completing the test..............................................................139
Sensitive directional residual overcurrent and power
protection SDEPSDE ................................................................139
Measuring the operate and time limit for set values.............139
Completing the test..............................................................145
Thermal overload protection, two time constants TRPTTR ......145
Checking operate and reset values......................................145
Completing the test..............................................................146
Breaker failure protection CCRBRF..........................................146
Checking the phase current operate value, IP> ...................146
Table of contents
5
Installation and commissioning manual

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24