4.13.3 Function block
IEC05000441-2-en.vsd
3PHSUM
BLOCK
DFTSPFC
G1AI3P*
G2AI3P*
AI3P
AI1
AI2
AI3
AI4
IEC05000441 V2 EN
Figure 41: 3PHSUM function block
4.13.4 Input and output signals
Table 52: 3PHSUM Input signals
Name Type Default Description
BLOCK BOOLEAN 0 Block
DFTSPFC REAL 0 Number of samples per fundamental cycle used for
DFT calculation
G1AI3P GROUP
SIGNAL
- Group 1 analog input 3-phase group
G2AI3P GROUP
SIGNAL
- Group 2 analog input 3-phase group
Table 53: 3PHSUM Output signals
Name
Type Description
AI3P GROUP SIGNAL Group analog input 3-phase group
AI1 GROUP SIGNAL Group 1 analog input
AI2 GROUP SIGNAL Group 2 analog input
AI3 GROUP SIGNAL Group 3 analog input
AI4 GROUP SIGNAL Group 4 analog input
4.13.5 Setting parameters
Settings DFTRefExtOut and DFTReference shall be set to default value
InternalDFTRef if no VT inputs are available.
1MRK505222-UUS C Section 4
Basic IED functions
115
Technical reference manual