Components Power Requirements Watts | Juniper Networks EX8208

Chapter 7: Planning Power Requirements

Table 45: Power Specifications for a 2000 W DC Power Supply Used in an EX8208 Switch

DC input voltage	• 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.
DC input current rating	50 A maximum at nominal operating voltage (–48 VDC) for each input terminal.
Output power	2000 W
Internal Fuse Protection	100 A

Related Topics • DC Power Supply in an EX8200 Switch on page 48

•DC Power Supply LEDs in an EX8200 Switch on page 50

Power Requirements for EX8208 Switch Components

Table 46 on page 111 lists the power requirements for different hardware components of an EX8208 switch under typical voltage conditions.

Components	Power Requirements (Watts)
Fan tray	• 300 W (at normal fan speed)
	• 1100 W (at maximum fan speed)
Switch Fabric and Routing Engine (SRE) module	200 W
Switch Fabric (SF) module	100 W
8-port SFP+ line card (including optical transceivers)	450 W
40-port SFP+ line card (including optical transceivers)	550 W
48-port SFP line card (including optical transceivers)	330 W
48-port RJ-45 line card	350 W

Related Topics • AC Power Supply in an EX8200 Switch on page 40

•DC Power Supply in an EX8200 Switch on page 48

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