Siemens siprotec 7SA522 User Manual

Functions
6-1637SA522 Manual
C53000-G1176-C119-2
Figure 6-86 Connection example with external reclosure device for 1-/3-pole reclosure with
mode selector switch
Figure 6-87 Connection example with external reclosure device for 3-pole reclosure
Control of the
internal automatic
reclosure by an
external protection
device
If the 7SA522 is equipped with the internal automatic reclosure function, it may also
be controlled by an external 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 7SA522.
7SA522
L+
external
reclosure–device
1-pole
3-pole
1-/3-pole
L+
Selector
switch
L–
L–
L+
L–
5HOD\3,&.83
5HOD\75,3SK
5HOD\75,3S/
5HOD\75,3SK
5HOD\75,3S/
5HOD\75,3SK
Relay TRIP 1pL3
>Enable ARzones
>1p Trip Perm
>Only 1ph AR
7SA522
L+
external
reclosure–device
L–
L–
L+
5HOD\3,&.83
Relay TRIP
>Enable ARzones

Siemens siprotec 7SA522 Specifications

General

Brand	Siemens
Model	siprotec 7SA522
Category	Protection Device
Language	English