Voltage-Selection - ABB REC 561 User Manual

1MRK 580 152-XEN
Page 5 - 18
SYN1-CB1OPEN
SYN1-CB1CLD
SYN1-CB2OPEN
SYN1-CB2CLD
SYN-UB1OK
SYN-UB1FF
SYN-UB2OK
SYN-UB2FF
SYN1-VTSU

2.2 Voltage-selection

Synchronism and energizing
check for single circuit breaker
with voltage selection
&
&
&
1
1
Fig. 7 Voltage selection logic in a double bus, single breaker
arrangement. In case of three bay arrangement the 1 in SYN1
and UENERG1OK are replaced by 2 and 3 in the logic
Description of the input and output signals shown in the above logic dia-
grams for voltage selection:
Input signal
SYNX-CB1OPEN
SYNX-CB1CLD
SYNX-UB1FF
SYNX-UB1OK
SYNX-UB2FF
SYNX-UB2OK
ABB Network Partner AB
U5
U4
&
1
&
Description
Breaker section of Bay X open. Connected to
the auxiliary contacts of a breaker section (CB
and disconnector) in a double-bus, single-
breaker arrangement, to inform the voltage
selection about the positions.
Breaker section of Bay X closed. Connected to
the auxiliary contacts of a breaker section (CB
and disconnector) in a double-bus, single-
breaker arrangement to inform the voltage
selection about the positions.
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.
No external voltage fuse failure (U5). Inverted
signal.
External fuse failure input from busbar voltage
Bus 2 (U4). This signal can come from a tripped
fuse switch (MCB) on the secondary side of the
voltage transformer. In case of fuse failure, the
energizing check is blocked.
No external voltage fuse failure (U4). Inverted
signal.
Version 1.0-00
SYN1-VSUB1
SYN1-U-BUS
SYN1-VSUB2
UENERG1OK
(X80152-7)