ABB RER670 Applications Manual page 8

Table of contents
2
Examples on how to connect, configure and set CT
inputs for most commonly used CT connections....................48
Example on how to connect a star connected two-phase
CT set to the IED....................................................................50
Example how to connect single-phase CT to the IED............ 53
Relationships between setting parameter Base Current, CT
rated primary current and minimum pickup of a protection IED.. 54
Setting of voltage channels......................................................... 55
Example................................................................................. 55
Examples how to connect, configure and set VT inputs
for most commonly used VT connections.............................. 55
Examples on how to connect a two phase-to-earth
connected VT to the IED........................................................ 56
Example on how to connect a residually connected IED....... 58
Example of analogue configuration for railway applications........59
Configuration example 1 ....................................................... 60
Configuration example 2........................................................ 61
Configuration example 3........................................................ 62
Section 5 Local HMI....................................................................... 65
Display..............................................................................................66
LEDs.................................................................................................68
Keypad............................................................................................. 69
Local HMI functionality..................................................................... 71
Protection and alarm indication................................................... 71
Parameter management .............................................................72
Front communication................................................................... 73
Section 6 Differential protection..................................................... 75
Low impedance restricted earth fault protection REFPDIF ............. 75
Identification................................................................................ 75
Application................................................................................... 75
Transformer winding, solidly earthed..................................... 76
CT earthing direction.............................................................. 77
Railway specific applications for REFPDIF function...............77
Setting guidelines........................................................................ 77
Setting and configuration........................................................77
Settings.................................................................................. 78
Single-phase railway power transformer differential protection
T1PPDIF...........................................................................................78
Identification................................................................................ 78
Application................................................................................... 78
Setting guidelines........................................................................ 79
Restrained and unrestrained differential protection................79
Elimination of zero sequence currents................................... 82
Railway application RER670 2.2 IEC
Application manual