Dc Power Specifications For Ex8200 Switches - Juniper EX8208 Hardware Manual

NOTE: If the IN OK LED and the OUT OK LED are unlit, the power cords are not installed
properly or the power supply has failed.
If the IN OK LED is lit green and the OUT OK LED is unlit, the power supply is not installed
properly or the power supply has an internal failure.
If the FAIL LED is lit, the power supply has failed and must be replaced. If the FAIL LED is blinking,
add a power supply to balance the power demand and supply.

DC Power Specifications for EX8200 Switches

Table 32 on page 75 lists the power specifications for the 3000 W DC power supply used in EX8216
switches.
Table 32: Power Specifications for a 3000 W DC Power Supply Used in an EX8216 Switch
Item
DC input voltage
DC input current rating
Output power
Internal Fuse Protection
Table 33 on page 76 lists the power specifications for the 2000 W DC power supply used in EX8208
switches.
Specifications
Minimum operating voltage: –40 VDC
Nominal operating voltage: –48 VDC
Operating voltage range: –40 VDC through –72 VDC
NOTE: If the input voltage from the DC power source drops below –37.5 VDC through
–39.5 VDC, the switching platform automatically shuts down. During automatic
shutdown, the circuit remains active. When the input voltage returns to –43 VDC
through –44 VDC, the switch automatically starts up again and the system returns to
normal operation within 30 minutes. No operator intervention is required.
75 A maximum at nominal operating voltage (–48 VDC) for each input terminal.
3000 W
100 A
75