Sirius 830 Installation Manual
www.s-a-m.com
Power Supplies
Issue 2 Rev 2
Page 39
© 2016 SAM
8.3.3 Dual Power Shelf Connections
This connection method is suitable for systems with two power shelves and allows an
individual power supply shelf to be isolated if required (see the Sirius 800 Maintenance &
Upgrade Manual for details).
Two separate mains supplies should be used to maintain redundancy in the event of one
supply failing.
Fig 23. Power and Alarm Connections
There is one spare 48 V DC connector on each power supply shelf. Do not remove the
covers of the unused connectors.
Note:
The three 48 V DC power connectors on each power supply shelf are common. Any two of
the three sockets on each power supply shelf can be used to power the router.
Functional Earth Stud
48 V DC Power Connectors
25-Way
D-Type Alarm
Connection
Functional
Earth
PSU Alarm
Connectors
Protective Earth
AC Power
Cables with
PowerCon
Connectors
Mains
Supply B
Mains
Supply A
Protective
Earth
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