Connecting Power To A Dc-Powered Router - Juniper M10i Hardware Manual

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Connecting Power to a DC-Powered Router

Connect DC power to the router by inserting power cables into the field-wiring
terminals on the faceplate of each power supply. Power and grounding cables are
not supplied with the router. For information about the required cable type, see
Power, Connection, and Cable Specifications"
CAUTION: There is no standard color coding for DC power cables. The color coding
used by the external DC power source at your site determines the color coding for
the leads on the power cables that attach to the terminal studs on the power supply
faceplate. You must ensure that power connections maintain the proper polarity.
The power source cables might be labeled
To connect DC power to the router, follow this procedure (see
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Verify that the switch on each power supply faceplate is in the
For each power supply, insert the appliance coupler end of a power cord into
the appliance inlet on a power supply faceplate and insert the plug into an AC
power source receptacle. Verify that the power cord does not block access to
router components or drape where people could trip on it.
Verify that there is no power flowing from either external power source, so that
the voltage across the leads of the power cables is 0 V. Ensure that there is no
chance that the cable leads might become active during the procedure.
For each power supply, verify that the power switch on the power supply faceplate
is in the ( ) position.
OFF O
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to one of the ESD points on the chassis. Make sure the router
is attached to a proper earth ground. For more information about ESD, see
"Preventing Electrostatic Discharge Damage"
Connect the grounding cable to a proper earth ground.
Verify that a licensed electrician has attached the cable lug provided with the
router to the grounding cable.
Using a number 2 Phillips screwdriver, remove the screws next to the grounding
symbol above the power supplies on the chassis rear. Secure the grounding cable
lug to the chosen grounding point by reinstalling and tightening the screws.
Verify that a licensed electrician has attached a listed power cable lug to each
power source cable.
Loop the power cables through the hook located on the faceplate to the right of
the field-wiring terminals.
Depending on the type of power cable lugs used, loosen or remove the screws
on the field-wiring terminals.
Chapter 9: Connecting the Router
OFF
on page 179.
and to indicate their polarity.
(+) ( )
Figure 26
on page 140.
Providing Power to the Router
( ) position.
O
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