Input And Output Signals; Setting Parameters - ABB REL 551-C1*2.5 Technical Reference Manual

Protect line differential protection terminal
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6.4
6.5
106
Supervision of AC input quantities (DA)
Instance name
Function block name
( DAnn- )
DA12-
DirAnalogIn_I
DA13-
DirAnalogIn_P
DA14-
DirAnalogIn_Q
DA15-
DirAnalogIn_f
DA16-
DirAnalogIn_S

Input and output signals

Table 117: Input signals for the AC monitoring (DAnn-) function block
Signal
BLOCK
Use CAP configuration tool to se status of the output signals.
Table 118: Output signals for the AC monitoring (DAnn-) function block
Signal
HIALARM
HIWARN
LOWWARN
LOWALARM

Setting parameters

The PST, Parameter Setting Tool, must be used to set the parameters.
Description
Mean value I of the three currents I1,I2 and I3
Three phase active power P measured by the first
three voltage and current inputs
Three phase reactive power Q measured by the
first three voltage and current inputs
Mean value of frequency f as measured by the volt-
age inputs U1, U2 and U3
Three phase apparent power S measured by the
first three voltage and current inputs
Description
Block updating of value for measured quantity
Description
High Alarm for measured quantity
High Warning for measured quantity
Low Warning for measured quantity
Low Alarm for measured quantity
Chapter 8
Monitoring

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