via the extinguishing capacitors in the circuit breakers. This voltage
can be as high as 30% or more of the base line voltage.
Because the setting ranges of the threshold voltages UHighBusEnerg/
UHighLineEnerg and ULowBusEnerg/ULowLineEnerg partly overlap each other,
the setting conditions may be such that the setting of the non-energized threshold
value is higher than that of the energized threshold value. The parameters must
therefore be set carefully to avoid overlapping.
UMaxEnerg
This setting is used to block the closing when the voltage on the live side is above
the set value of UMaxEnerg.
tAutoEnerg and tManEnerg
The purpose of the timer delay settings, tAutoEnerg and tManEnerg, is to ensure
that the dead side remains de-energized and that the condition is not due to a
temporary interference. Should the conditions not persist for the specified time, the
delay timer is reset and the procedure is restarted when the conditions are fulfilled
again. Circuit breaker closing is thus not permitted until the energizing condition
has remained constant throughout the set delay setting time.
8.2 Apparatus control APC
IP14560-1 v2
8.2.1 Application
IP14931-1 v1
M13443-4 v13
The apparatus control is a functionality for control and supervising of circuit
breakers, disconnectors, and earthing switches within a bay. Permission to operate
is given after evaluation of conditions from other functions such as interlocking,
synchrocheck, operator place selection and external or internal blockings.
The complete apparatus control function is not included in this
product, and the information below is included for understanding of
the principle for the use of QCBAY, LOCREM, LOCREMCTRL,
SCILO, SCSWI, SXCBR.
Figure 37 shows from which places the apparatus control function receives
commands. The commands to an apparatus can be initiated from the Control
Centre (CC), the station HMI or the local HMI on the IED front.
1MRK 511 423-UEN A Section 8
Control
Bay control REC650 2.2 IEC 109
Application manual
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