Power connection and configuration
Fortinet Technologies Inc.
Example: power for a fully-loaded chassis (14 boards)
The power requirement for a fully loaded FortiGate-5144C chassis with boards in all 14 slots would be:
1000W + (400W * 14) = 6600W
Connecting the FortiGate-5144C chassis to DC power and ground
The chassis includes two redundant power feeds (Feed A and Feed B) which provide power to all chassis slots and
components. Each power feed includes two power entry modules (PEMs).
To power the chassis you need to connect the PEMs in Feed A to a -48VDC/-60VDC power source. For redundant power
you can also connect the PEMs in Feed B to a -48VDC/-60VDC power source.
Each PEM includes a Reverse Voltage LED that lights if you have reversed the polarity when
connecting power.
FortiGate-5144C power Feeds, PEMs, and ground connector
PEM 1
Feed A
Feed B
PEM 2
PEM 3
PEM 4
Chassis
ground
connector
Each PEM includes two input feeds (feed 1 and feed 2). Each of these input feeds includes two -48VDC/-60 VDC
connectors (labeled -) and two return connectors (l). Each input feed is a separate power channel that includes
its own 30A fuse. Each power channel provides power to a different set of chassis components. All terminals of each
input feed should be connected to a single -48VDC power source with a listed circuit breaker.
FortiGate-5144C 6.2.3 Chassis Guide
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