Juniper EX6210 Complete Hardware Manual page 136

Complete Hardware Guide for EX6210 Ethernet Switches
Table 52: Calculating the Maximum System Power Required for Your EX6210 Switch
Configuration (continued)
Step
2 Total Base Power Requirement of the
Installed Line Cards = (Number of Line
Cards Installed in the Switch) * (Maximum
Power Requirement of Line Card)
For maximum power requirements of
different EX6210 switch components, see
Table 51 on page
3 Total PoE+ Power Requirement of the
Installed Line Cards = (Number of Line
Cards Installed in the Switch) * (Maximum
PoE+ Power Requirement per Line Card)
For details about the PoE+ power budget
for your switch, see Understanding PoE on
EX Series Switches.
4 Total Power Requirement of the Installed
Line Cards = (Total Base Power
Requirement of the Installed Line Cards) +
(Total PoE+ Power Requirement of the
Installed Line Cards)
5 Maximum Internal Power Requirement of
the Switch = (Chassis Base Power Budget)
+ (Total Power Requirement of the Installed
Line Cards)
6 Determine the efficiency of the installed
power supply:
2500 W AC power supply efficiency is
approximately 94% at high-voltage line
(200–240 VAC) input.
2500 W AC power supply efficiency is
approximately 92% at low-voltage line
(100–120 VAC) input.
5000 W AC power supply efficiency is
approximately 92% at high-voltage line
(200–240 VAC) input.
5000 W AC power supply efficiency is
approximately 89% at low-voltage line
(100–120 VAC) input.
2100 W DC power supply efficiency is
approximately 92%.
116
EX6210 switch
with two 48-port
RJ-45 line cards,
2100 W DC power
supply
= ((2) * (150 W))
= 300 W
113.
-
= 300 W
= (500 W + 300 W)
= 800 W
92%
EX6210 switch EX6210 switch
with two 48-port with two 48-port
PoE+ line cards, SFP line cards,
2500 W AC power 5000 W AC power
supply supply
(high-voltage line (high-voltage line
input) input)
=((2) * (220 W)) = ((2) * (250 W))
= 440 W = 500 W
= ((2) * (1440 W)) -
= 2880 W
= (440 W + 2880 = 500 W
W)
= 3320 W
= (500 W + 3320 = (500 W + 500 W)
W)
= 1000 W
= 3820 W
94% 92%
Copyright © 2014, Juniper Networks, Inc.