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is 52 VDC. The output power is 1200 W for low-voltage line input and 2000 W for
high-voltage line input.
The3000 W AC powersupplysupports only the high-voltageline input (200–240 VAC)
AC power configuration. Low-voltage line input is not supported for the 3000 W AC
power supplies on the EX8200 switches. The output is 52 VDC. The output power is
3000 W for high-voltage line input.
N+1 Redundancy Configuration of AC Power Supplies
N+1 redundancy configuration is required for normal operation of EX8200 switches. In
an N+1 redundancy configuration, if one power supply fails or is removed, the remaining
power supplies continue to supply power for the switch without interruption.
Depending on the configuration type of the switch and the input voltage, determine the
number of power supplies needed(N) fora switch. Install an additional powersupply to
meet the required N+1 redundancy configuration. For details about different switch
configurations, see “EX8208 Switch Configurations” on page 6 or EX8216 Switch
Configurations.
The tables in this section list the N+1 power requirements for different EX8200 switch
configurations:
•
Table17onpage42—ListstheN+1powerrequirementsofEX8208switchconfigurations
that use 2000 W AC power supplies.
•
Table18onpage43—ListstheN+1powerrequirementsofEX8208switchconfigurations
that use 3000 W AC power supplies.
•
Table19onpage43—ListstheN+1powerrequirementsofEX8216switchconfigurations
that use 2000 W AC power supplies.
•
Table20onpage43—ListstheN+1powerrequirementsofEX8216switchconfigurations
that use 3000 W AC power supplies.
Table 17: N+1 Power Redundancy Configurations for Different EX8208
Switch Configurations Using 2000 W AC Power Supplies
PowerSupplies
Neededfor N+1
PowerSupplies
Needed(N)Input Voltage
Switch
Configuration
21High-voltage line
(200–240 VAC)
Base
32Low-voltageline
(100–120VAC)
43High-voltage line
(200–240 VAC)
Fullyloaded with
8-port SFP+ line
cards
65Low-voltageline
(100–120VAC)
Copyright ©2010,Juniper Networks,Inc.42
CompleteHardwareGuide forEX8208 EthernetSwitches