Hitachi Relion 670 Series Applications Manual page 307

1MRK506375-UEN Rev. N
value, or for creating certain logic. Boolean, integer, floating point, string types of signals are
available.
One FXDSIGN function block is included in all IEDs.
Example for use of GRP_OFF signal in FXDSIGN
The Restricted earth fault function (REFPDIF) can be used both for auto-transformers and normal
transformers.
When used for auto-transformers, information from both windings parts, together with the neutral
point current, needs to be available to the function. This means that three inputs are needed.
IEC09000619 V3 EN-US
Figure 155:
For normal transformers only one winding and the neutral point is available. This means that only two
inputs are used. Since all group connections are mandatory to be connected, the third input needs to
be connected to something, which is the GRP_OFF signal in FXDSIGN function block.
FXDSIGN
GRP_OFF
IEC09000620 V3 EN-US
Figure 156:
14.8 Boolean 16 to Integer conversion B16I
14.8.1 Identification
Function description
Boolean 16 to integer conversion
Railway application RER670
Application manual
REFPDIF
I3PW1CT1
I3PW2CT1
I3P
IEC09000619_3_en.vsd
REFPDIF function inputs for autotransformer application
REFPDIF
I3PW1CT1
I3PW2CT1
I3P
IEC09000620_3_en.vsd
REFPDIF function inputs for normal transformer application
IEC 61850
identification
B16I
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IEC 60617 ANSI/IEEE C37.2
identification device number
- -
Section 14
Logic
SEMOD175715-1 v1
SEMOD175721-2 v2
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