ABB REB 551-C3*2.5, Installation And Commissioning Manual, Page: 118 / 148

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Synchrocheck and energizing check (SYN) Chapter 13
Verifying settings by secondary
injection
12.2.2 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 10 can be used during the test if the final setting is not determined.
Table 10: Test settings for voltage difference (NA=Not applicable)
U5 Activate SYN2_CB1CLD
SYN3 U-line UL1 Activate SYN3_CB2CLD
UL2 Activate SYN3_FD2CLD
U5 Activate SYN3_CB1CLD and CB2CLD
U-bus U4 No activation of inputs necessary
Parameter Setting Single bay Single bay
with phas-
ing Multiple
bays
Operation On
InputPhase UL1
UMeasure Ph/N NA NA
PhaseShift 0 deg
URatio 1.00
USelection SingleBus
AutoEnerg Off
ManEnerg Off
ManDBDL Off
UHigh 70% U1b
ULow 40% U1b
FreqDiff 0,05 Hz
PhaseDiff 45
°
UDiff 30% U1b
tAutoEnerg 0.5 s
tManEnerg 0.5 s
OperationSynch Off NA NA
ShortPulse Off NA NA
FreqDiffSynch 0.4 Hz NA NA
tPulse 0.2 s NA NA
tBreaker 0.2 s NA NA
VTConnection Line NA
tSync Os
FreqDiffBlock Off NA NA