ABB REC 561 User Manual

Synchronism and energizing
check for single circuit breaker
with voltage selection
ABB Network Partner AB
1MRK 580 152-XEN
Page 5 - 17
Version 1.0-00
2 Theory of operation
Fig. 6 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.
Output signals Description
SYNX-AUTOOK Synchro-check/energizing OK. The output sig-
nal is high when the synchro-check conditions
set on the MMI are fulfilled. It can also include
the energizing condition, if selected. The signal
can be used to release the auto-recloser before
closing attempt of the circuit breaker. It can also
be used as a free signal.
SYNX-MANOK Same as above but with alternative settings of
the direction for energizing to be used during
manual closing of the circuit breaker.
FreqDiff
PhaseDiff
UDiff
UHigh
ULow
<
<
<
>
<
50-300 mHz
5-75 deg
5-50 %
70-100 %
10-80 %
SYNX-VTSU
SYNX-BLOCK
SYNX
SYNX-AUTO
SYNX-MANOK
Connectable
From fuse failure
inputs
detection, lineside
(external or internal)
Connectable
outputs
(X80152-6)
X=1,2 or 3
General Block

ABB REC 561 Specifications

General

Brand	ABB
Model	REC 561
Category	Touch terminals
Language	English