Application; Setting Guidelines; Setting Example - ABB RED650 Applications Manual

1MRK 505 393-UEN B
14.13.2
14.13.3
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Line differential protection RED650 2.2 IEC
Application manual

Application

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.

Setting guidelines

For proper operation of comparison the set value should be set within the range of
9
± 2 ×10 .
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.

Setting example

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
Section 14
Logic
GUID-4C6D730D-BB1C-45F1-A719-1267234BF1B9 v1
GUID-ADA3E806-BEF1-4D15-B270-207386A0AEE4 v2
GUID-13302FD6-1585-42FE-BD6D-44F231982C59 v2
313