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Upgrading to Supported T1600 Power Supplies

 

Removing a Two-Input 160-A DC Power Supply

The power supplies are located at the rear of the chassis below the SIBs. Each two-input 160-A power supply weighs approximately 23 lb (10.5 kg).

Caution

Do not leave a power supply slot empty for more than 30 minutes while the router is operational. For proper airflow, the power supply must remain in the chassis, or a blank panel must be used in an empty slot.

To remove a power supply:

  1. 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. Caution

    You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. 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 each power supply.

  2. For a nonredundant power supply, power off the system. See the T640 Core Router Hardware Guide. For redundant power supplies, check that the other power supply is functional.
  3. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  4. Switch the circuit breakers on the power supply faceplate to the off position (O).Note

    After powering off a power supply, you must wait at least 60 seconds before turning it back on.

  5. Remove the clear plastic cover protecting the terminal studs on the faceplate.
  6. Remove the nuts and washers from the terminal studs (see Figure 1). Use a 7/16-in. (11 mm) nut driver.
    Figure 1: Disconnecting Power Cables from a Two-Input 160-A DC Power Supply
    Disconnecting Power
Cables from a Two-Input 160-A DC Power Supply
  7. Remove the cable lugs from the terminal studs.
  8. Loosen the captive screws on the cable restraints on the right edge of the power supply faceplate.
  9. Carefully move the power cables out of the way.
  10. Loosen the captive screws on the lower corners of the power supply faceplate completely. Twist the ejector handles on the upper corners of the faceplate counterclockwise to unseat the power supply.
  11. Twist the ejector handles on the upper corners of the faceplate counterclockwise to unseat the power supply.
  12. Grasp the handle on the power supply faceplate, and pull firmly to start removing the power supply. Slide it halfway out of the chassis (see Figure 2).Warning

    Do not touch the power connectors on the rear of the power supply (see Figure 3). They can contain dangerous voltages.

  13. Place one hand underneath the power supply to support it and slide it completely out of the chassis.Caution

    Each two-input 160-A power supply weighs approximately 23 lb (10.5 kg). Be prepared to support the full weight of the power supply as you remove it from the router.

Figure 2: Removing a Power Supply
Removing a
Power Supply
Figure 3: Rear of the Power Supply Showing Midplane Connectors
Rear of the
Power Supply Showing Midplane Connectors

Installing a T1600 Power Supply

For a list of power supplies supported by the T1600 router, see T1600 Power System Description. For the procedure to install a power supply, see Replacing a T1600 Routing Engine .

To install DC power supplies:

  1. Install one power supply.
  2. Connect power to the DC power supply.

    For procedures to connect power, see the following topics:

  3. Repeat the procedure for the other DC power supply.
Note

Before installing AC power supplies, the router must be powered down, and both DC power supplies must be removed. Mixing DC power supplies and AC power supplies in the same router is not supported.

When upgrading to AC power supplies:

  1. Install the power supplies.
  2. Connect power to the power supplies.
  3. Power on the router. See Powering On the AC-Powered T1600 Router.