ABB REC 561 - Voltage-Selection

ABB Network Partner AB
Synchronism and energizing
check for single circuit breaker
with voltage selection
Version 1.0-00
1MRK 580 152-XEN
Page 5 - 18
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
2.2 Voltage-selection Description of the input and output signals shown in the above logic dia-
grams for voltage selection:
Input signal Description
SYNX-CB1OPEN 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.
SYNX-CB1CLD 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.
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.
SYNX-UB2FF 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.
SYNX-UB2OK No external voltage fuse failure (U4). Inverted
signal.
1
V
SYN1-CB1OPEN
SYN1-CB1CLD
SYN1-CB2OPEN
1
V
SYN1-CB2CLD
SYN-UB1FF
SYN1-VTSU
1
V
UENERG1OK
(X80152-7)
SYN-UB1OK
SYN-UB2FF
SYN-UB2OK
&
&
&
&
&
SYN1-VSUB1
SYN1-VSUB2
U5
U4
SYN1-U-BUS