ABB RET670 Installation And Commissioning Manual

Checking the residual (earth fault) current operate value
IN> set below IP> .................................................................147
Checking the re-trip and back-up times................................147
Verifying the re-trip mode.....................................................147
Verifying the back-up trip mode............................................148
Verifying instantaneous back-up trip at CB faulty
condition...............................................................................149
Verifying the case RetripMode = Contact .............................149
Verifying the function mode Current&Contact ......................150
Completing the test..............................................................151
Pole discordance protection CCRPLD......................................151
Verifying the settings............................................................151
Completing the test..............................................................152
Directional underpower protection GUPPDUP .........................152
Verifying the settings............................................................152
Completing the test..............................................................154
Directional overpower protection GOPPDOP ...........................154
Verifying the settings............................................................154
Completing the test..............................................................155
Broken conductor check BRCPTOC ........................................155
Measuring the operate and time limit of set values..............155
Completing the test..............................................................155
Voltage protection...........................................................................156
Two step undervoltage protection UV2PTUV ...........................156
Verifying the settings............................................................156
Completing the test..............................................................156
Two step overvoltage protection OV2PTOV .............................156
Verifying the settings............................................................157
Completing the test..............................................................157
Two step residual overvoltage protection ROV2PTOV ............157
Verifying the settings............................................................157
Completing the test..............................................................157
Overexcitation protection OEXPVPH .......................................158
Verifying the settings............................................................158
Completing the test..............................................................158
Voltage differential protection VDCPTOV .................................159
Check of undervoltage levels...............................................159
Check of voltage differential trip and alarm levels................161
Check of trip and trip reset timers........................................162
Final adjustment of compensation for VT ratio
differences ...........................................................................163
Completing the test..............................................................163
Loss of voltage check LOVPTUV .............................................163
Measuring the operate limit of set values.............................163
Table of contents
6
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