Juniper QFX5220, Руководство по оборудованию, Страница: 84 / 247

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If you are mounting a QFX5220 in a rack or cabinet with other equipment, ensure that the exhaust from
other equipment does not blow into the intake vents of the chassis.
•
Leave at least 24 in. (61 cm) both in front of and behind the QFX5220. For service personnel to remove
and install hardware components, you must leave adequate space at the front and back of the switch.
NEBS GR-63 recommends that you allow at least 30 in. (76.2 cm) in front of the rack or cabinet and
24 in. (61 cm) behind the rack or cabinet.
QFX5220 Chassis Physical Specifications
The QFX5220 is a rigid sheet-metal structure that houses the hardware components (see
Table 27 on page 87 ).
Table 27: Physical Specifications for the QFX5220
Weight Depth Width Height Product Model
24.5 lb (11.11 kg) with power
supplies and fans installed
21.1 in.
(53.59 cm)
17.26 in.
(43.8 cm)
1.72 in. (4.3 cm) QFX5220-32CD
98 lb (44.45 kg) with power
supplies and fans installed
76 lb (34.47 kg) chassis only
29.25 in. (74.3
cm)
17.32 in (44 cm) 6.88 in. (17.48
cm)
QFX5220-128C
Site Electrical Wiring Guidelines
Table 28 on page 88 describes the factors you must consider while planning the electrical wiring at your
site.
WARNING: You must provide a properly grounded and shielded environment and use
electrical surge-suppression devices.
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