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 - 12
The voltage check can also be set Off. A closing impulse is issued to the
circuit breaker if one of the U-line or U-bus voltages is High and the other
is Low, that is, when only one side is energized. You can set AutoEnerg
and ManEnerg to enable different conditions during automatic and ma-
nual closing of the circuit breaker.
1.3 Voltage selection The voltage selection function is used for the synchronism (SYNX) and
energizing check functions. When the REC 561 is used in a doublebus,
the voltage that should be selected depends on the positions of the break-
ers and/or disconnectors. By checking the position of the disconnectors
and/or breakers auxiliary contacts, the REC 561 can select the right volt-
age for the synchronism and energizing function. Select the type of volt-
age from the Synchro-check, Uselection, SingleBus or DbleBus on the
MMI.
The configuration of internal signal inputs and outputs may be different
for different busbar systems, and the actual configuration for the substa-
tion must be done during engineering of the control terminal.
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