Instruction manual
–
AQ F3x0 Feeder protection IED
116 (162
)
command is received during the running time of any of the cycles, then the automatic
reclosing function enters into “Dynamic blocked” state and resets.
If the fault still exists at the end of the last cycle, the automatic reclosing function trips and
generates the signal for final trip: (Final Trip). The same final trip signal is generated in case
of an evolving fault if “Block Reclosing” is selected.
After final trip, the automatic reclosing
function enters “Dynamic blocked” state. A final trip command is also
generated if, after a
multi-phase fault, a fault is detected again during the dead time.
There are several conditions to cause dynamic blocked state of the automatic reclosing
function. This state becomes valid if any of the conditions of the dynamic blocking changes
to active during the running time of any of the reclosing cycles. At the time of the change a
timer is started. Timer duration is defined by the time parameter (Dynamic Blocking time).
During this time, no reclosing command is generated.
The conditions to start the dynamic blocked state are:
•
There is no trip command during the “Action time”
•
The duration of the starting impulse for the MV automatic reclosing function is too long
•
If no “CB ready” signal is received at the intended time of reclo
sing command
•
The dead time is prolonged further then the preset parameter value (DeadTime
Max.Delay)
•
The waiting time for the “SYNC Release” signal is too long
•
After the final trip command
•
In case of a manual close command or a manual open command (if the status variable
(CB OPEN single-pole) gets TRUE without (AutoReclosing Start)).
•
In case of a general block (the device is blocked)
In a dynamic blocked state, the
(Blocked) status signal is TRUE (similar to “Not ready”
conditions).
There are several conditions that must be satisfied before the automatic reclosing function
enters “Not Ready” state. This state becomes valid if any of the conditions of the blocking
get TRUE outside the running time of the reclosing cycles.
•
Reclosing is disabled by the pa
rameter if it is selected to “Off”
•
The circuit breaker is not ready for operation
•
After a manual close command
Содержание AQ F3 0 Series
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Страница 84: ...Instruction manual AQ F3x0 Feeder protection IED 84 162 Figure 3 45 Polygon characteristics logic ...
Страница 148: ...Instruction manual AQ F3x0 Feeder protection IED 148 162 Figure 6 3 Panel cut out and spacing of AQ 35x IED ...
Страница 149: ...Instruction manual AQ F3x0 Feeder protection IED 149 162 Figure 6 4 Dimensions of the AQ 39x IED ...
Страница 150: ...Instruction manual AQ F3x0 Feeder protection IED 150 162 Figure 6 5 Panel cut out and spacing of the AQ 39x IED ...