Product specifications

Appendix A Hardware Units SS822/SS823/SS832 Voting Unit (for Redundant Power Supply)
3BSE036351-510 A 379
SS823
The SS823 Voting Unit has double overvoltage protection circuit on both inputs. It
is also able to detect both short and open circuit in the voting element. For details
see Table 120.
Block diagram and dimensions for SS823 see Figure 102 and Figure 103. Table 120
and Table 121 shows supervision data and technical data for SS823. For connection
of SS823 in a redundant configuration see Figure 104.
Figure 101. SS822 - Used in Redundant SD821 Configuration
Two SS823 can never be configured in parallel to achieve more current.
OK F
OK
A+ B+ L+
SS822
F
+
+
AB
L+ L-
L+ L+ L- L-
NLPE
OK
SD821
L+ L+ L- L-
NLPE
OK
SD821
SA
SB
L-
L+
Supervision
signals to
CI8X0/TB8X0
+24V
0V
Mains
Input
Protective Earth