OR
AND
S
R
UDiffSynch
UHighBusSynch
UHighLineSynch
FreqDiffMax
FreqDiffMin
FreqRateChange
AND
t
50 ms
AND
AND
AND
AND
tClose
Pulse
AND
STARTSYN
BLKSYNCH
SYNPROGR
SYNOK
SYNFAIL
tMax
Synch
TSTSYNOK
IEC06000636-4-en.vsd
fBus&fLine ± 5Hz
Phase Diff < 15 deg
PhaseDiff=closing angle
tBreaker
FreqDiff
Close pulse
in advance
TSTSYNCH
OperationSynch=On
InvalidSelection
Block
OR
IEC06000636 V4 EN
Figure 298: 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 block (B16I). Integers supplied shall
1MRK502052-UEN B Section 14
Control
635
Technical manual
To Next Page
Loading...
