Connecting The Router To Power; Powering On The Ln2600 Router - Juniper LN2600 Manual

Rugged security router

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CHAPTER 9

Connecting the Router to Power

Powering on the LN2600 Router on page 45

The LN2600 router derives its power from a single -48 VDC power supply with dual power

inputs.

CAUTION:

The LN2600 router has more than one power source. Ensure

proper care while connecting the DC power supply to the router.

You connect DC power to the router by attaching power cables from the external DC

power sources to the terminal on the power supply ports. The power cables are not

provided with the router.

To connect the DC source power cables to the router for each power supply:

Power off the dedicated customer site circuit breakers. Ensure that the voltage across

the DC power source cable leads is 0 V and that there is no chance that the cable

leads might become active during installation.

Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect

the strap to one of the ESD points on the chassis.

Verify that the DC power cables are correctly labeled before making connections to

the power supply. In a typical power distribution scheme where the return is connected

to chassis ground at the battery plant, you can use a multimeter to verify the resistance

of the

48V

and

RTN

cables to chassis ground:

The cable with very large resistance (indicating an open circuit) to chassis ground

–48V

The cable with very low resistance (indicating a closed circuit) to chassis ground is

RTN

Loosen the screws from the power terminals using a 2.5 mm slotted screw driver.

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