Siemens siprotec 7SA6 User Manual

Functions
6-204 7SA6 Manual
C53000-G1176-C156-2
If phase segregated auxiliary contacts of the circuit-breaker are connected, a three-
pole coupling by the 7SA6 is guaranteed when more than one CB pole is tripped. This
requires setting of the forced three pole coupling (see section 6.14.2 under subtitle
“Forced Three-pole Trip”, page 207). An external automatic three-pole coupling is
therefore not necessary when the above conditions are satisfied. This rules out two-
pole tripping under all circumstances.
Figure 6-111 Connection example for 2 protection devices with 2 automatic reclosure func-
tions
2nd
Second protection
7SA6
Relay TRIP 1pL1
Relay TRIP 3ph.
Relay TRIP 1pL2
Relay TRIP 3ph.
Relay TRIP 1pL3
Relay TRIP 3ph.
L–
L–
automatic reclosure
internal
AR function
BI
BI
BI
BI
Trip L1
Trip L2
Trip L3 BI
BI
BI
BI
Protective function
AR Start
L+
Trip L1
Trip L2
Trip L3
SO
SO
SO
SO
2nd protective relay
AR Start*)
L+
Trip L1*)
Trip L2*)
Trip L3*)
SO
SO
SO
SO
Trip L1
L+
Trip L2
Trip L3
C
C
C
L+
C
C
C
L1 L2 L3
to the circuit-breaker
BI – binary input
SO – signal output
C – commands
*) – for all protective functions
operating with reclosure
>Trip L1 AR
>AR Start AR Start
>Trip L2 AR
>Trip L3 AR

Siemens siprotec 7SA6 Specifications

General

Brand	Siemens
Model	siprotec 7SA6
Category	Relays
Language	English