Figure 129: Connecting Ground And Dc Power Cables; Table 82: Mx2010 Dc Power System Input Voltage - Juniper MX2020 Hardware Manual

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MX2020 3D Universal Edge Router Hardware Guide

DC input voltage

Figure 129: Connecting Ground and DC Power Cables

Grounding points

(on chassis)

Ensure that each power cable lug seats flush against the surface

of the terminal block as you are tightening the nuts. Ensure that each nut

is properly threaded onto the terminal stud. The nut should be able to spin

freely with your fingers when it is first placed onto the terminal stud.

Applying installation torque to the nut when the nut is improperly threaded

may result in damage to the terminal stud.

The maximum torque rating of the terminal studs on the DC

PDM is 25 lb-in. (33.89 Nm). The terminal studs may be damaged if

excessive torque is applied. Use only a torque-controlled driver or socket

wrench to tighten nuts on the DC PDM terminal studs.

Specification

Operating range: –40 to –72 VDC