ABB Relion 670 Series Applications Manual page 595

1MRK 511 401-UEN Rev. K
SMAI instance
SMAI1:1
SMAI2:2
SMAI3:3
SMAI4:4
SMAI5:5
SMAI6:6
SMAI7:7
SMAI8:8
SMAI9:9
SMAI10:10
SMAI11:11
SMAI12:12
SMAI instance
SMAI1:13
SMAI2:14
SMAI3:15
SMAI4:16
SMAI5:17
SMAI6:18
SMAI7:19
SMAI8:20
SMAI9:21
SMAI10:22
SMAI11:23
SMAI12:24
SMAI instance
SMAI1:25
SMAI2:26
SMAI3:27
SMAI4:28
SMAI5:29
SMAI6:30
SMAI7:31
SMAI8:32
SMAI9:33
SMAI10:34
SMAI11:35
SMAI12:36
SMAI instance
SMAI1:37
SMAI2:38
SMAI3:39
SMAI4:40
SMAI5:41
SMAI6:42
SMAI7:43
SMAI8:44
SMAI9:45
SMAI10:46
SMAI11:47
SMAI12:48
IEC07000197 V3 EN-US
Figure 281: Twelve SMAI instances are grouped within one task time. SMAI blocks are
The examples shows a situation with adaptive frequency tracking with one reference selected
for all instances. In practice each instance can be adapted to the needs of the actual
application. The adaptive frequency tracking is needed in IEDs that belong to the protection
system of synchronous machines and that are active during run-up and shout-down of the
Bay control REC670
Application manual
Task time group 1
3 phase group
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12
Task time group 2
3 phase group
1
2
3
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7
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12
Task time group 3
3 phase group
1
2
3
4
5
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7
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12
Task time group 4
3 phase group
1
2
3
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IEC07000197.vsd
available in four different task times in the IED. Three pointed instances are
used in the following examples.
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DFTRefGrp7
DFTRefGrp4
DFTRefGrp6
Section 24
Basic IED functions
589