Juniper MX480, Руководство по оборудованию

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Figure 140: Connecting DC Power to the Router
See Also Preventing Electrostatic Discharge Damage to an MX480 Router on page 388
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MX480 DC Power Supply Description on page 53
Replacing an MX480 DC Power Supply Cable
1.
Disconnecting an MX480 DC Power Supply Cable on page 327
2.
Connecting an MX480 DC Power Supply Cable on page 328
Disconnecting an MX480 DC Power Supply Cable
WARNING: Before performing DC power procedures, ensure that power is
removed from the DC circuit. To ensure that all power is off, locate the circuit
breaker on the panel board that services the DC circuit, switch the circuit
breaker to the off position, and tape the switch handle of the circuit breaker
in the off position.
To disconnect a power cable for a DC power supply:
1.
Switch off the dedicated customer site circuit breaker for the power supply being
removed. Follow your site's procedures for ESD.
2.
Make sure that the voltage across the DC power source cable leads is 0 V and that
there is no chance that the cables might become active during the removal process.
3.
Verify that the
INPUT OK
LED on the power supply is not lit.
327 Copyright © 2019, Juniper Networks, Inc.
Chapter 4: Maintaining Components