Hitachi Relion 670 Series Applications Manual page 313

1MRK506375-UEN Rev. N
14.13.2 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.
14.13.3 Setting guidelines
For proper operation of comparison the set value should be set within the range of ± 2 ×10
Setting procedure on the IED:
EnaAbs: 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: 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: To set the reference value for comparison when setting RefSource is selected as
SetValue.
14.13.4 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
Set the RefSource = Set Value
SetValue shall be set between -2000000000 to 2000000000
Similarly for signed comparison between input and setting
Set the EnaAbs = Signed
Set the RefSource = Set Value
SetValue shall be set between -2000000000 to 2000000000
Railway application RER670
Application manual
© 2017 - 2023 Hitachi Energy. All rights reserved
Section 14
Logic
GUID-4C6D730D-BB1C-45F1-A719-1267234BF1B9 v1
GUID-ADA3E806-BEF1-4D15-B270-207386A0AEE4 v3
9
.
GUID-13302FD6-1585-42FE-BD6D-44F231982C59 v2
307