Juniper EX9214

Four power supplies provide full redundancy. If a power supply in a redundant conguraon is removed
or fails, its redundant power supply takes over without interrupon. The power supply in PEM2 serves
as redundant power supply to the power supply in slot PEM0 and the power supply in PEM3 serves as
redundant power supply to the power supply in slot PEM1.
SEE ALSO
Connecng DC Power to an EX9214 Switch | 179
DC Power Supply Specicaons for EX9214 Switches
Table 17 on page 54 lists the DC power supply specicaons for EX9214 switches.
Table 17: DC Power Supply Specicaons for an EX9214 Switch
Item Specicaons
Maximum output power
• 4100 W in two-feed mode
• 1700 W in one-feed mode
DC input voltage
• Nominal operang range: –48 VDC
• Operang voltage range: –40 VDC to –72 VDC
DC nominal input current rang @ 48
VDC
• 104 A for both feeds (54 A and 50 A per feed) in two-feed mode
• 42 A in one-feed mode
Maximum input current rang @ 40 VDC
input voltage
• 128 A for both feeds (66 A and 62 A per feed) in two-feed mode
• 52 A in one-feed mode
Table 18 on page 55 lists the power system specicaons for EX9214 switches.
54