ABB Relion 670 Series Applications Manual page 8

Table of contents
4.2.2.3
4.2.2.4
4.2.2.5
4.2.2.6
4.2.2.7
4.2.3 Relationships between setting parameter Base Current, CT rated primary current and
minimum pickup of a protection IED........................................................................................69
4.2.4 Setting of voltage channels..................................................................................................... 70
4.2.4.1
4.2.4.2
4.2.4.3
4.2.4.4
4.2.4.5
4.2.4.6
4.2.4.7
Section 5 Local HMI...........................................................................................................83
5.1 Display.......................................................................................................................................84
5.2 LEDs..........................................................................................................................................85
5.3 Keypad...................................................................................................................................... 86
5.4 Local HMI functionality.............................................................................................................. 88
5.4.1 Protection and alarm indication............................................................................................... 88
5.4.2 Parameter management .........................................................................................................89
5.4.3 Front communication...............................................................................................................89
Section 6 Differential protection...................................................................................... 91
6.1 Busbar differential protection ....................................................................................................91
6.1.1 Identification............................................................................................................................ 91
6.1.2 Basic applications....................................................................................................................93
6.1.2.1
6.1.2.2
6.1.3 Busbar protection applications................................................................................................ 93
6.1.3.1
6.1.3.2
6.1.3.3
6.1.3.4
6.1.3.5
6.1.3.6
6.1.3.7
6.1.3.8
2
Example 3.......................................................................................................................... 57
Examples on how to connect, configure and set CT inputs for most commonly used
CT connections.................................................................................................................. 61
Example on how to connect a wye connected three-phase CT set to the IED ................. 62
Example how to connect delta connected three-phase CT set to the IED......................... 66
Example how to connect single-phase CT to the IED........................................................ 68
Example............................................................................................................................. 70
Examples how to connect, configure and set VT inputs for most commonly used VT
connections........................................................................................................................ 70
Examples on how to connect a three phase-to-ground connected VT to the IED .............71
Example on how to connect a phase-to-phase connected VT to the IED.......................... 73
Example on how to connect an open delta VT to the IED for high impedance
grounded or ungrounded networks ................................................................................... 75
Example how to connect the open delta VT to the IED for low impedance grounded
or solidly grounded power systems.................................................................................... 77
Example on how to connect a neutral point VT to the IED.................................................79
General...............................................................................................................................93
Meshed corner application and T-connection application.................................................. 93
General...............................................................................................................................93
Differential protection......................................................................................................... 94
Check zone protection........................................................................................................96
Switch status monitoring.................................................................................................... 98
CT connection control...................................................................................................... 102
CT disconnection for bus interconnector CT cores.......................................................... 103
End fault protection.......................................................................................................... 107
Zone interconnection (Load transfer)............................................................................... 109
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1MRK 505 370-UUS Rev. K
Busbar protection REB670
Application manual