ABB REC 561 User Manual

ABB Network Partner AB
Synchronism and energizing
check for double circuit breakers
and voltage selection
Version 1.0-00
1MRK 580 167-XEN
Page 5 - 36
2 Theory of operation
Fig. 5 Input and output signals
2.1 Synchro check Description of input and output signals for the synchro check function.
Input signals Description
SYNX-BLOCK General block input from any external condi
tion, that should block the synchro-check.
SYNX-VTSU The SYNC function cooperates with the FUSE-
VTSU connected signal, which is the built-in
optional fuse failure detection. It can also be
connected to external condition for fuse failure.
This is a blocking condition for the energizing
function.
SYNX-UB1FF External fuse failure input from busbar voltage
Bus 1 (U5). This signal can come from a tripped
fuse switch (MCB) on the secondary side of the
voltage transformer. In case of a fuse failure the
energizing check is blocked.
SYNX-UB1OK No external voltage fuse failure (U5). Inverted
signal.
FreqDiff
PhaseDiff
UDiff
UHigh
ULow
<
<
<
>
<
50-300 mHz
5-75 deg
5-50 %
70-100 %
10-80 %
SYNX-VTSU
SYNX-BLOCK
SYNX
X=1,2,3 or 4
SYNX-AUTO
SYNX-MANOK
Connectable inputs
From fuse failure
detection, lineside
(external or internal)
Connectable
outputs
(X80167-5)
General Block
SYN1-UBIOK
SYN1-UBIFF
From fuse failure
detection busside

ABB REC 561 Specifications

General

Brand	ABB
Model	REC 561
Category	Touch terminals
Language	English