ABB Relion 670 Series Applications Manual page 8

Table of contents
4.1 Introduction.............................................................................................................................................67
4.2 Setting guidelines...................................................................................................................................67
4.2.1 Setting of the phase reference channel.........................................................................................67
4.2.1.1 Example............................................................................................................................................ 68
4.2.2 Setting of current channels............................................................................................................. 68
4.2.2.1 Example 1..........................................................................................................................................68
4.2.2.2 Example 2......................................................................................................................................... 69
4.2.2.3 Example 3......................................................................................................................................... 69
4.2.2.4 Examples on how to connect, configure and set CT inputs for most commonly
used CT connections...................................................................................................................... 73
4.2.2.5 Example on how to connect a wye connected three-phase CT set to the IED................... 74
4.2.2.6 Example how to connect delta connected three-phase CT set to the IED..........................78
4.2.2.7 Example how to connect single-phase CT to the IED............................................................. 80
4.2.3 Relationships between setting parameter Base Current, CT rated primary current
and minimum pickup of a protection IED..................................................................................... 82
4.2.4 Setting of voltage channels............................................................................................................. 82
4.2.4.1 Example............................................................................................................................................ 82
4.2.4.2 Examples how to connect, configure and set VT inputs for most commonly used
VT connections................................................................................................................................83
4.2.4.3 Examples on how to connect a three phase-to-ground connected VT to the IED............ 83
4.2.4.4 Example on how to connect a phase-to-phase connected VT to the IED........................... 85
4.2.4.5 Example on how to connect an open delta VT to the IED for high impedance
grounded or ungrounded netwoeks........................................................................................... 87
4.2.4.6 Example how to connect the open delta VT to the IED for low impedance
grounded or solidly grounded power systems.........................................................................89
4.2.4.7 Example on how to connect a neutral point VT to the IED.....................................................92
Section 5 Local HMI.................................................................................................................95
5.1 Display...................................................................................................................................................... 96
5.2 LEDs...........................................................................................................................................................97
5.3 Keypad...................................................................................................................................................... 98
5.4 Local HMI functionality....................................................................................................................... 100
5.4.1 Protection and alarm indication................................................................................................... 100
5.4.2 Parameter management ................................................................................................................ 101
5.4.3 Front communication...................................................................................................................... 101
Section 6 Differential protection........................................................................................103
6.1 High impedance differential protection, single phase HZPDIF (87).......................................... 103
6.1.1 Identification.....................................................................................................................................103
6.1.2 Application.........................................................................................................................................103
6.1.2.1 The basics of the high impedance principle............................................................................105
6.1.3 Connection examples for high impedance differential protection........................................110
6.1.3.1 Connections for three-phase high impedance differential protection..............................110
6.1.3.2 Connections for 1Ph High impedance differential protection HZPDIF (87).......................111
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Application manual