ABB ret650 - Application

12.13.2 Application
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The function gives the possibility to monitor the level of integer values in the
system relative to each other or to a fixed value. It is a basic arithmetic function
that can be used for monitoring, supervision, interlocking and other logics.
12.13.3 Setting guidelines
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For proper operation of comparison the set value should be set within the range of
± 2 ×10
9
.
Setting procedure on the IED:
EnaAbs: This setting is used to select the comparison type between signed and
absolute values.
• Absolute: Comparison is performed on absolute values of input and reference
values
• Signed: Comparison is performed on signed values of input and reference
values.
RefSource: This setting is used to select the reference source between input and
setting for comparison.
• Input REF: The function will take reference value from input REF
• Set Value: The function will take reference value from setting SetValue
SetValue: This setting is used to set the reference value for comparison when
setting RefSource is selected as SetValue.
12.13.4 Setting example
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For absolute comparison between inputs:
Set the EnaAbs = Absolute
Set the RefSource = Input REF
Similarly for Signed comparison between inputs
Set the EnaAbs = Signed
Set the RefSource =Input REF
For absolute comparison between input and setting
Set the EnaAbs = Absolute
1MRK 504 169-UEN A Section 12
Logic
Transformer protection RET650 2.2 IEC 263
Application manual