Testing The Voltage Difference - ABB REB 551-C3*2.5 Installation And Commissioning Manual

12.2.2
Synchrocheck and energizing check (SYN)
SYN3 U-line
U-bus

Testing the voltage difference

Set the voltage difference at 30% U1b on the HMI, and the test should check that operation is
achieved when the voltage difference UDiff is lower than 30% U1b.
The settings in table 10can be used during the test if the final setting is not determined.
Table 10: Test settings for voltage difference (NA=Not applicable)
Parameter
Operation
InputPhase
UMeasure
PhaseShift
URatio
USelection
AutoEnerg
ManEnerg
ManDBDL
UHigh
ULow
FreqDiff
PhaseDiff
UDiff
tAutoEnerg
tManEnerg
OperationSynch
ShortPulse
FreqDiffSynch
tPulse
tBreaker
VTConnection
tSync
FreqDiffBlock
U5 Activate SYN2_CB1CLD
UL1 Activate SYN3_CB2CLD
UL2 Activate SYN3_FD2CLD
U5 Activate SYN3_CB1CLD and CB2CLD
U4 No activation of inputs necessary
Setting
On
UL1
Ph/N
0 deg
1.00
SingleBus
Off
Off
Off
70% U1b
40% U1b
0,05 Hz
45 °
30% U1b
0.5 s
0.5 s
Off
Off
0.4 Hz
0.2 s
0.2 s
Line
Os
Off
Chapter 13
Verifying settings by secondary
Single bay Single bay Multiple
with phas- bays
ing
NA NA
NA NA
NA NA
NA NA
NA NA
NA NA
NA
NA NA
injection
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