OR
AND
S
R
UDiffSynch
UHighBusSynch
UHighLineSynch
FreqDiffMax
FreqDiffMin
FreqRateChange
AND
t
50 ms
AND
AND
AND
AND
tClosePulse
AND
STARTSYN
BLKSYNCH
SYNPROGR
SYNOK
SYNFAIL
tMaxSynch
TSTSYNOK
=IEC06000636=5=en=Original.vsd
fBus&fLine ± 5Hz
PhaseDiff=Close pulse in advance
tBreaker
FreqDiff
TSTSYNCH
OperationSynch=On
invalidSelection
BLOCK
OR
Close pulse
in advance
CloseAngleMax
IEC06000636 V5 EN-US
Figure 144: Simplified logic diagram for the synchronizing function
Energizing check
M14835-3 v12
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
Section 12 1MRK 505 394-UEN A
Control
312 Line differential protection RED650 2.2 IEC
Technical manual
To Next Page
Loading...
