Connect Power To A Dc Router - Juniper MX204 Quick Start Manual

Connect Power to a DC Router

Copyright © 2018, Juniper Networks, Inc.
Press the tab on the loop and draw out the loop into a tight circle (see
9.
Figure 18 on page 17).
Dress the power cord appropriately. Verify that the power cord does not block the air
10.
exhaust and access to router components, or drape where people could trip on it.
Repeat Step 1 through Step
11.
Power on the power supply at source. Observe the power status LED on the router. If
12.
an AC power supply is installed correctly and functioning normally, the status LED
lights green steadily.
If the status LED indicates that the power supply is not functioning normally, repeat
the installation and cabling procedures.
Figure 18: Connecting an AC Power Cord to an MX204 AC Power Supply
Table 8: MX204 DC Power System Input Voltage
Item
DC input voltage
Switch off the dedicated customer-site circuit breakers. Ensure that the voltage across
1.
the DC power source cable leads is 0 V and that there is no chance that the cable
leads might become active during installation.
Remove the clear plastic cover protecting the terminal on the faceplate.
2.
Verify that the DC power cables are correctly labeled before making connections to
3.
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 and DC cables to chassis ground:
–48V RTN
The cable with very large resistance (indicating an open circuit) to chassis ground
is .
–48V
10 for the remaining power supply.
Specification
Operating range: –44 through –72 VDC
Connect Power to a DC Router
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