ABB RELION 670 Series Applications Manual page 94

Section 6
Wide area measurement system
IEC140000128 V1 EN-US
Figure 39: An example of wrong connection of SMAI and PHASORREPORT blocks in ACT
Rule 3:
This rule is only related to the connection of 3PHSUM block to the PHASORREPORT block. If
3PHSUM block is configured to use external DFT reference (from SMAI reference block), it shall
only be connected to the same PHASORREPORT block instance as the one the SMAI reference
block is connected to. In other words, both the SMAI reference block and 3PHSUM block (3PHSUM
block with external DFT reference) shall be connected to the same instance of PHASORREPORT
block (PHASOR1-32 of Instance number 1 or 2).
Figure 40
where SMAI3 is configured as the reference block for DFT reference external out (DFTRefExtOut)
and 3PHSUM uses external DFT reference (from SMAI3). Figures
setting parameters.
88
shows an example of correct connection of 3PHSUM and PHASORREPORT blocks in ACT
1MRK 511 364-UUS A
IEC140000128-1-en.vsd
41 and 42 show the corresponding
Application manual