Hitachi Relion 670 Series Applications Manual page 92

Section 6
Wide area measurement system
IEC140000128 V2 EN-US
Figure 41:
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 42
where SMAI3 is configured as the reference block for DFT reference external out (DFTRefExtOut) and
3PHSUM uses external DFT reference (from SMAI3). Figures
parameters.
86
An example of wrong connection of SMAI and PHASORREPORT blocks in ACT
shows an example of correct connection of 3PHSUM and PHASORREPORT blocks in ACT
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1MRK511407-UUS Rev. N
IEC140000128-2-en.vsd
43 and 44 show the corresponding setting
Phasor measurement unit RES670
Application manual