Siemens 6MD85, Manual

Page: 572 / 1256

Condition Indication
No reclosing cycle possible
Recognition due to the following causes:
•
Automatic reclosing cycle is not set.
•
Automatic reclosing cycles are set, but all are blocked, for
example, via binary input.
•
There is no internal device function and no binary input
configured for starting the automatic reclosing function.
•
With operating modes with tripping:
–
both 1-pole and 3-pole cycles are blocked via binary
inputs
•
With operating modes with pickup:
–
1-phase, 2-phase and 3-phase automatic reclosing
cycles, the blocking is done through binary inputs.
•
With operating modes without action time:
–
the first automatic reclosing cycle is blocked via binary
input.
•
With the dead-line check functionality:
–
if the voltage measurement is not available or is
disrupted.
Inactive
Dynamic Blocking
The automatic reclosing function is blocked dynamically if a blocking condition occurs while an automatic
reclosing function is running. The dynamic blocking is signalized with the indication
Not ready
.
After the occurrence of a dynamic blocking, it is checked in intervals of 0.5 s to see if the blocking can be
removed. If the blocking condition remains or if a different blocking condition occurs in the meantime, the
blocking will remain. If, in contrast, the cause of the blocking disappears, the dynamic blocking will be
removed if no general pickup or no tripping configured for the automatic reclosing function start is available.
A separate indication for logging exists for each individual blocking cause.
The following conditions lead to the dynamic blocking:
Condition Indication
If no reclosing cycle fitting the fault type is released:
•
With operating modes with tripping:
If a 1-pole or 3-pole operate indication occurs during the
automatic reclosing function start input, however, the auto-
matic reclosing function does not start in accordance with
the parameterization for this type of tripping, the respective
dead time will be set to
invalid
.
•
With operating modes with pickup:
If a 1-phase, 2-phase or 3-phase pickup indication occurs
during the automatic reclosing function starting process,
but the automatic reclosing function may not be started in
accordance with the parameterization for this type of
pickup.
Not ready
Block. by no cycle
If a protection function causes the automatic reclosing function
to be blocked in accordance with the configuration
Not ready
Block. by protection
If the maximum set waiting time for the delay of the start of the
dead time through the binary input
>Dead time start
delay
expires without the binary input becoming inactive
during this time lapse
Not ready
Blk.by max. d.t. delay
If the synchrocheck is set and the synchronism conditions after
the expiration of the maximum dead-time prolongation are not
fulfilled before the assignment of the close command
Not ready
Blk.by max.d.t. expiry
Protection and Automation Functions
7.2 Automatic Reclosing Function
572 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017