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.
EqualBandHigh: This setting is used to set the equal condition high band limit in % of
reference value. This high band limit will act as reset limit for INHIGH output when
INHIGH.
EqualBandLow: This setting is used to set the equal condition low band limit in % of
reference value. This low band limit will act as reset limit for INLOW output when
INLOW.
16.15.4 Setting example
GUID-E7070CF6-B44B-4799-BE18-5C75B9FE2A87 v2
Let us consider a comparison is to be done between current magnitudes in the range of
90 to 110 with nominal rating is 100 and the order is kA.
For the above condition the comparator can be designed with settings as follows,
EnaAbs = Absolute
RefSource = Set Value
SetValue = 100
RefPrefix = Kilo
EqualBandHigh = 5.0 % of reference value
1MRK 502 071-UUS A Section 16
Logic
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062 675
Application manual
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