Mx480 Chassis Grounding Specifications; Mx480 Chassis Grounding Points Specifications; Table 31: Calculating Thermal Output - Juniper MX480 Hardware Manual

Table 31: Calculating Thermal Output

Power Supply
MX480 AC Normal-capacity (high-line)
MX480 AC High-capacity (high-line)
MX480 DC Normal-capacity
MX480 DC High-capacity
Related
Documentation

MX480 Chassis Grounding Specifications

MX480 Chassis Grounding Points Specifications

Copyright © 2011, Juniper Networks, Inc.
Appendix D: Power Guidelines, Requirements, and Specifications for the MX480 Router
1
These values are at full load and nominal voltage.
2
For this configuration, total power is 1440 W.
3
Zone 0 requirement.
Calculate thermal output (BTUs). To calculate this, multiply the input power
4.
requirement (in watts) by 3.41.
1
Zone 0 output.
Power Requirements for an MX480 Router
AC Electrical Specifications for the MX480 Router on page 276
DC Power Supply Electrical Specifications for the MX480 Router on page 280
MX480 Chassis Grounding Points Specifications on page 273
MX480 Router Grounding Cable Lug Specifications on page 274
MX480 Router Grounding Cable Specifications on page 275
To meet safety and electromagnetic interference (EMI) requirements and to ensure
proper operation, the router must be adequately grounded before power is connected.
To ground AC-powered and DC-powered routers, you must connect a grounding cable
to earth ground and then attach it to the chassis grounding points using the two screws
provided.
Two threaded inserts (PEM nuts) are provided on the upper rear of the chassis for
connecting the router to earth ground. The grounding points fit UNC 1/4–20 screws
(American). The grounding points are spaced at 0.625-in. (15.86-mm) centers (see
Figure 117 on page 274 or Figure 118 on page
NOTE: Additional grounding is provided to an AC-powered router when you
plug its power supplies into grounded AC power receptacles.
Thermal Output (BTUs per hour)
1694 * 3.41 = 5777 BTU/hr
1618 * 3.41 = 5517 BTU/hr
1
1469 * 3.41 = 4879 BTU/hr
1
1469 * 3.41 = 5009 BTU/hr
274).
273