ABB Relion 670 Series Applications Manual page 481

1MRK 505 370-UUS Rev. K
For task time group 2 this gives the following settings:
SMAI1:13: DFTRefExtOut = DFTRefGrp4 to route SMAI4:16 reference to the SPFCOUT output,
DFTReference = DFTRefGrp4 for SMAI1:13 to use SMAI4:16 as reference (see Figure 238) SMAI2:14 –
SMAI12:24: DFTReference = DFTRefGrp4 to use SMAI4:16 as reference.
For task time group 3 this gives the following settings:
SMAI1:25 – SMAI12:36: DFTReference = ExternalDFTRef to use DFTSPFC input as reference
(SMAI4:16)
For task time group 4 this gives the following settings:
SMAI1:37 – SMAI12:48: DFTReference = ExternalDFTRef to use DFTSPFC input as reference
(SMAI4:16)
Example 3
BLOCK BLOCK
DFTSPFC DFTSPFC
^GRP1_A ^GRP1_A
^GRP1_B ^GRP1_B
^GRP1_C ^GRP1_C
^GRP1_N ^GRP1_N
TYPE TYPE
ANSI20000501 V1 EN-US
Figure 239: Configuration for using an instance in task time group 4 as DFT reference.
Assume instance SMAI6:42 in task time group 4 has been selected in the configuration to control the
frequency tracking for all instances. Observe that the selected reference instance (that is, frequency
tracking master) must be a voltage type. Observe that positive sequence voltage is used for the
frequency tracking feature.
For task time group 1 this gives the following settings (see Figure
Busbar protection REB670
Application manual
SMAI1:37
SPFCOUT SPFCOUT
AI3P AI3P
AI1 AI1
AI2 AI2
AI3 AI3
AI4 AI4
AIN AIN
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SMAI1:13 SMAI1:13 SMAI1:13
BLOCK BLOCK BLOCK BLOCK SPFCOUT SPFCOUT SPFCOUT SPFCOUT
DFTSPFC DFTSPFC DFTSPFC DFTSPFC AI3P AI3P AI3P AI3P
^GRP1_A ^GRP1_A ^GRP1_A ^GRP1_A AI1 AI1 AI1 AI1
^GRP1_B ^GRP1_B ^GRP1_B ^GRP1_B AI2 AI2 AI2 AI2
^GRP1_C ^GRP1_C ^GRP1_C ^GRP1_C AI3 AI3 AI3 AI3
^GRP1_N ^GRP1_N ^GRP1_N ^GRP1_N AI4 AI4 AI4 AI4
TYPE TYPE TYPE TYPE AIN AIN AIN AIN
SMAI1:1
BLOCK BLOCK SPFCOUT SPFCOUT
DFTSPFC DFTSPFC AI3P AI3P
^GRP1_A ^GRP1_A AI1 AI1
^GRP1_B ^GRP1_B AI2 AI2
^GRP1_C ^GRP1_C AI 3 AI 3
^GRP1_N ^GRP1_N AI 4 AI 4
TYPE TYPE AIN AIN
SMAI1:25
BLOCK BLOCK SPFCOUT SPFCOUT
DFTSPFC DFTSPFC AI3P AI3P
^GRP1_A ^GRP1_A AI1 AI1
^GRP1_B ^GRP1_B AI2 AI2
^GRP1_C ^GRP1_C AI3 AI3
^GRP1_N ^GRP1_N AI4 AI4
TYPE TYPE AIN AIN
ANSI20000501-1-en.vsd
236 for numbering):
Section 20
Basic IED functions
475