Siemens siprotec 7SA6 User Manual

Functions
6-1997SA6 Manual
C53000-G1176-C156-2
The close command can be transmitted by a teleprotection scheme using the protec-
tion interfaces (ordering variant). When the annunciation
AR Remote Close is out-
put, this information is transmitted at the same time to the remote end via the protec-
tion data interface. The information is OR-combined with the information of the binary
input
>AR RemoteClose and made available for the automatic reclosure. (Figure 6-
105).
Connecting an
External Reclosure
Device
If the 7SA6 has to work with an external reclosure device, the binary inputs and out-
puts provided for this purpose must be taken into consideration. The following inputs
and outputs are recommended:
Binary inputs:
383 >Enable ARzones With this binary input the external reclosure device
controls stages of the individual short-circuit protection
functions which are active before reclosure (e.g. overreach-
ing zone in the distance protection). The input can be omit-
ted if no overreaching stage is required (e.g. distance pro-
tectionwithcomparisonmode,seealsoaboveundersub-
title “Selectivity before Reclosure”).
382 >Only 1ph AR The external reclosure device is only programmed for 1-
pole; the stages of the individual protection functions that
are activated before reclosure via F.No.
383 only do so in
the case of single-phase faults; in the event of multiple
phase faults these stages do not operate. This input is not
required if no overreaching stage is used (e.g. differential
protection or comparison mode with distance protection,
see also above under subtitle “Selectivity before Reclos-
ure”).
381 >1p Trip Perm The external reclosure device allows 1-pole tripping (logic
inversion of 3-pole coupling). If this input is not assigned or
not routed (matrix), the protection functions trip 3-pole for all
faults. If the external reclosure device cannot supply this
signal but supplies a “3-pole coupling” signal instead, this
mustbetakenintoaccountintheroutingofthebinaryinputs
(see section 5.2): The signal must be inverted in this case
(
L–active = active without voltage).
Binary outputs:
501 Relay PICKUP Start of protection device, general (if required by external
recloser device).
515 Relay TRIP 3ph.trip protective device 3-pole,
512 Relay TRIP 1pL1trip protective device 1-pole phase L1.
515 Relay TRIP 3ph.trip protective device 3-pole,
513 Relay TRIP 1pL2trip protective device 1-pole phase L2.
515 Relay TRIP 3ph.trip protective device 3-pole,
514 Relay TRIP 1pL3trip protective device 1-pole phase L3.
In order to obtain a phase-segregated trip indication, the respective single-pole trip
commands must be combined with the three-pole trip command on one output.
Figure 6-106 for example shows the interconnection between a 7SA6 and an external
reclosure device with a mode selector switch.

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English