ABB REL650 Technical Manual page 350

Section 11
Control
344
OperationSynch=On
TSTSYNCH
STARTSYN
invalidSelection
BLOCK
BLKSYNCH
OR
UDiffSynch
UHighBusSynch
AND
UHighLineSynch
FreqDiffMax
FreqDiffMin
FreqRateChange
fBus&fLine ± 5Hz
CloseAngleMax
PhaseDiff=Close pulse in advance
FreqDiff
Close pulse
in advance
tBreaker
IEC06000636 V5 EN-US
Figure 168: Simplified logic diagram for the synchronizing function
Energizing check
Voltage values are measured in the IED and are available for evaluation by the
Energizing check function.
The function measures voltages on the busbar and the line to verify whether they
are live or dead. This is done by comparing with the set values UHighBusEnerg
and ULowBusEnerg for bus energizing and UHighLineEnerg and ULowLineEnerg
for line energizing.
The frequency on both sides of the circuit breaker is also measured. The
frequencies must not deviate from the rated frequency more than +/-5Hz.
The Energizing direction can be selected individually for the Manual and the
Automatic functions respectively. When the conditions are met the outputs
AUTOENOK and MANENOK respectively will be activated if the fuse
supervision conditions are fulfilled. The output signal can be delayed
independently for MANENOK and AUTOENOK conditions. The Energizing
direction can also be selected by an integer input AENMODE respective
MENMODE, which for example, can be connected to a Binary to Integer function
S
AND
R
50 ms
t
tClosePulse
AND
AND
Line distance protection REL650 2.2 IEC
1MRK 506 382-UEN A
SYNPROGR
AND
AND
OR
TSTSYNOK
AND
tMaxSynch
=IEC06000636=5=en=Original.vsd
Technical manual
SYNOK
SYNFAIL
M14835-3 v12