Sirius 800 Series User Manual
Power Supply Redundancy
Router Power Supply Shelf Requirements B.1
Iss 5 Rev 7
Page 305
© 2017 SAM
B.1.2 Sirius 840: Power Supply Shelf Requirements
The number of power supply shelves should be selected based on the mains supply
operating voltage and router configuration, see Table 93 for information.
See Appendix B.2 for power shelf, PSU and power cable order codes.
To reduce the risk of electric shock, plug each power supply shelf into separate branch
circuits employing separate service grounds.
Sirius 840 Router Configuration
Mains Supply
(V AC)
Number of Power Supply
Shelves and Units Required
for Redundancy
Typical router configuration of less than 36
video AHP modules
(5919/5949/5915/5925) fitted in the router
100 - 120 V AC
Nominal
2 Shelves
8 Power Supply Units
4 DC Cables
If 36 or more video AHP modules
(5919/5949/5915/5925) are fitted in the
router
100 - 120 V AC
Nominal
3 Shelves
12 Power Supply Units
6 DC Cables
Typical router configuration of less than 36
video AHP modules
(5919/5949/5915/5925) fitted in the router
220 - 240 V AC
Nominal
1 Shelf
4 Power Supply Units
3 DC Cables
If 36 or more video AHP modules
(5919/5949/5915/5925) are fitted in the
router
220 - 240 V AC
Nominal
2 Shelves
8 Power Supply Units
6 DC Cables
Table 93
Sirius 840 Power Supply Redundancy
Important:
•
If the Sirius 840 router is expanded from its initial configuration check Table 93 to
see if extra power supply shelves are required.
•
It is the responsibility of the Sirius 840 installer to ensure any AC power
requirements are met.
