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CHAPTER 7
Planning Power Requirements
•
AC Power Specifications for EX8200 Switches on page 109
•
DC Power Specifications for EX8200 Switches on page 110
•
Power Requirements for EX8208 Switch Components on page 111
•
AC Power Cord Specifications for an EX8200 Switch on page 112
•
Calculating Power Requirements for an EX8208 Switch on page 114
•
Calculating the EX8200 Switch Fiber-Optic Cable Power Budget on page 120
•
Calculating the EX8200 Switch Fiber-Optic Cable Power Margin on page 121
AC Power Specifications for EX8200 Switches
EX8200 switches can use either AC or DC power supplies.
Table 42 on page 109 lists the ACpower specifications for a 2000 W power supply used
in EX8200 switches.
Table 42: Power Specifications for a 2000 W AC Power Supply in an EX8200 Switch
SpecificationsItem
Operating range:
•
Low-voltageline—100–120 VAC
•
High-voltage line—200–240 VAC
ACinput voltage
50–60 HzACinput line frequency
•
Low-voltageline—13.8A
•
High-voltage line—12A
ACinput currentrating
•
Low-voltageline—1200W
•
High-voltage line—2000 W
ACoutput power
Table 43 on page 110 lists the AC power specifications for a 3000 W power supply used
in EX8200 switches.
109Copyright©2010,Juniper Networks, Inc.