SetValue shall be set between -2000000000 to 2000000000
17.14 Comparator for real inputs - REALCOMP
17.14.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Comparator for real inputs REALCOMP Real<=>
17.14.2 Application
The function gives the possibility to monitor the level of real 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.
17.14.3 Setting guidelines
Setting procedure on the IED:
EnaAbs: This setting is used to select the comparison type between signed and absolute
values.
• Absolute: Comparison is performed with absolute values of input and reference.
• Signed: Comparison is performed with signed values of input and reference.
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 Set Value. If this setting value is less than 0.2% of the set unit then
the output INLOW will never pickup.
RefPrefix: This setting is used to set the unit of the reference value for comparison when
setting RefSource is selected as SetValue. It has 5 unit selections and they are Milli, Unity,
Kilo, Mega and Giga.
Section 17 1MRK 506 369-UUS -
Logic
812 Line distance protection REL670 2.2 ANSI
Application manual
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