ABB AC 800M

Installing the SS823/SS832 Voting Unit Section 2 Installation
142 3BSE036351-510 A
Figure 48. Redundant Power Supply Powering Units and Field Equipment
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
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
CPU unit via TP830
+24 V
0 V
From Mains
Breaker
Protective Ground
L–
L+
+24 V
0V
Protective Ground
Powering
Field
Equipment
Powering
Units
From Mains
Breaker