Summation Block 3 Phase 3Phsum - ABB REL650 Applications Manual

Section 17
Basic IED functions
17.10
17.10.1
17.10.2
17.10.3
482
Assume instance SMAI_20_7:1 in task time group 1 has been selected in the
configuration to control the frequency tracking (For the SMAI_20_x of task time group
1). Observe that the selected reference instance (i.e. 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
SMAI_20_1:1 DFTRefExtOut = DFTRefGrp7 to route SMAI_20_7:1 reference to the
SPFCOUT output, DFTReference = DFTRefGrp7 for SMAI_20_7:1 to use
SMAI_20_7:1 as reference (see Figure 226). .
SMAI_20_2:1 - SMAI_20_12:1 DFTReference = DFTRefGrp7 for SMAI_20_2:1 -
SMAI_20_12:1 to use SMAI_20_7:1 as reference.
For task time group 2 this gives the following settings:
SMAI_20_2:2: DFTReference = ExternalDFTRef to use DFTSPFC input as reference
(SMAI_20_7:1); DFTRefExtOut = ExternalDFTRef (even if the output SPCFOUT is not
wired in AC).
SMAI_20_2:2 - SMAI_20_12:2 DFTReference = ExternalDFTRef to use DFTSPFC
input as reference (SMAI_20_7:1)

Summation block 3 phase 3PHSUM

Identification
Function description
Summation block 3 phase
Application
Summation block 3 phase function 3PHSUM is used to get the sum of two sets of three-
phase analog signals (of the same type) for those IED functions that might need it.
Setting guidelines
The summation block receives the three-phase signals from SMAI blocks. The
summation block has several settings.
IEC 61850 IEC 60617
identification identification
3PHSUM -
1MRK 506 334-UUS A
225 for numbering):
ANSI/IEEE C37.2
device number
-
Application manual