Functions
2.10 Automatic Reclosure Function (optional)
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
135
Depending on the external reclosure device requirements, the three 1-pole indications (No. 512, 513, 514) can
be combined to one „1-pole tripping“ output; No. 515 sends the „3-pole tripping“ signal to the external device.
In case of exclusively 3-pole reclose cycles, the general pickup signal (No. 501, if required by the external re-
closure device) and trip signal (No. 511) of 7SD610 (see Figure 2-49) are usually sufficient.
Figure 2-48 Connection example with external auto-reclosure device for 1-/3-pole AR with mode selector
switch
Figure 2-49 Connection example with external reclosure device for 3-pole AR
Control of the internal automatic reclosure by an external protection device
If the 7SD610 is equipped with the internal automatic reclosure function, this can also be controlled by an ex-
ternal protection device. This is of use, for example, on line ends with redundant protection or additional back-
up protection when the second protection is used for the same line end and has to work with the automatic
reclosure function integrated in the 7SD610.
The binary inputs and outputs provided for this functionality must be considered in this case. It must be decided
whether the internal automatic reclosure function is to be controlled by the starting (pickup) or by the trip
command of the external protection (see also above under „Control Mode of the Automatic Reclosure“).
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