Siemens 6MD85, Manual

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reclosing must be started with the operate indications. Additionally, the general pickup must also be consid-
ered.
With raising general pickup, the action times of the configured automatic reclosing cycles start. The general
pickup is in this connection the group indication of all internal protection functions configured for starting the
automatic reclosing and the external binary input for general pickup
>Gen. pickup for start
.
Through the time between the raising general pickup and clearing operate indication, the automatic reclosing
cycle to be started will be determined. Here for multiple automatic reclosing cycles, the sequence of the
expiring automatic reclosing cycles is not fixed, like the operating modes without action time.
The following example in
Figure 7-27 shows a tripping that comes after expiration of the action time of cycle
1, but still before the expiration of the action times from cycle 2 and cycle 3. Cycle 2 is now active.
Within the following reclaim time, there will be another pickup and tripping. Since cycle 2 is already complete,
these and all lower cycles are no longer able to expire. The 2nd operate indication comes during the running
action time of cycle 3. Thus, cycle 3 is now active.
[dwarce1d-190912-01.tif, 1, en_US]
Figure 7-27 Operating-Mode Signal Examples: With Tripping/With Action Time
Through the action time, there is a direct influence on the dead time behavior of the automatic reclosing func-
tion. With faults with short operate times, other dead times can be realized than for removed faults with
longer tripping time. With faults with short operate time, an automatic reclosing is executed, with removed
faults this does not occur with longer operate time. The operating mode
with op., with act. time
allows for different automatic reclosing cycles depending on the operate time of the protection function(s).
Operating Mode 2: w.pickup, w. action time
The operating mode
w.pickup, w. action time
allows different automatic reclosing cycles depending
on the operate time and type of fault. It is only suitable and applicable for applications with 3-pole tripping.
With this operating mode, the automatic reclosing must be started with the operate indications from the
protection functions. Additionally, the pickup sample from the conductor pickups and the general pickup are
considered:
•
With 1-phase pickup, the automatic reclosing cycles set for 1-phase dead times are activated. 1-phase
pickup includes both pickup samples phase-to-ground and only grounding.
•
With 2-phase pickup, the automatic reclosing cycles set for 2-phase dead times are activated.
•
With 3-phase pickup, the automatic reclosing cycles set for 3-phase dead times are activated.
With each automatic reclosing cycle, it is checked to see if it is a 1-phase, 2-phase or 3-phase pickup.
With raising general pickup, the action times of the configured automatic reclosing cycles start. The general
pickup is in this connection the group indication of all internal protection functions configured for starting the
automatic reclosing and the external binary input for general pickup
>Gen. pickup for start
.
Through the time between the raising general pickup and raising trip command, the automatic reclosing cycle
to be started will be determined. Here for multiple automatic reclosing cycles, the sequence of the expiring
automatic reclosing cycles is not fixed, like the operating modes without action time.
Protection and Automation Functions
7.2 Automatic Reclosing Function
SIPROTEC 5, High-Voltage Bay Controller, Manual 547
C53000-G5040-C015-9, Edition 11.2017