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Connect the PTX10003 to Power

Connecting the PTX10003 to Ground

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must connect the chassis to earth ground before you connect it to power. For installations that require a separate grounding conductor to the chassis, use the protective earthing terminal on the PTX10003 chassis to connect to the earth ground.

Note:

An AC-powered PTX10003 gains additional grounding when you plug the power supply into a grounded AC power outlet by using an AC power cord appropriate for your geographical location. See PTX10003 Power System.
Note:

You must install the PTX10003-160C in a restricted-access location and ensure the chassis is properly grounded at all times. The PTX10003-160C has a two-hole protective grounding terminal provided on the chassis. See Figure 1. Under all circumstances, use this grounding connection to ground the chassis. For AC powered systems, you must also use the grounding wire in the AC power cord along with the two-hole lug ground connection. This tested system meets or exceeds all applicable EMC regulatory requirements with the two-hole protective grounding terminal.

Note:

You must install the PTX10003-80C in a restricted-access location and ensure that the chassis is always properly grounded. The PTX10003-80C has a two-hole protective grounding terminal provided on the chassis. See Figure 2. We recommend that you use this protective grounding terminal as the preferred method for grounding the chassis regardless of the power supply configuration. However, if additional grounding methods are available, you can also use those methods. For example, you can use the grounding wire in the AC power cord or use the grounding terminal or lug on a DC power supply. This tested system meets or exceeds all applicable EMC regulatory requirements with the two-hole protective grounding terminal.
CAUTION:

Before you connect power to the PTX10003, a licensed electrician must attach a cable lug to the grounding cables and power cables that you supply. A cable with an incorrectly attached lug can damage the PTX10003 (for example, by causing a short circuit).
Note:

Mount the PTX10003 in the rack before attaching the grounding lug to the PTX10003. See Unpacking and Mounting the PTX10003.

Ensure that you have the following parts and tools available:

  • Grounding cable—The grounding cable must be 4 AWG (25 mm²), minimum 90° C wire, or as permitted by the local code (not provided).

  • Grounding lug for your grounding cable—The grounding lug required to support 80 A is a Panduit LCD4-10B-L or equivalent. The grounding lug required to support 60 A is a Panduit LCD6-14BH-L or equivalent (not provided).

  • Two #10-32 screws and washers (not provided).

  • Screwdriver appropriate for the #10-32 screws (not provided).

To connect a grounding cable to the PTX10003:

  1. Attach a grounding cable to earth ground (such as the rack in which the PTX10003 is mounted) and then attach it to the chassis grounding point. Figure 1 and Figure 2 show the location of the chassis grounding point.
    Figure 1: Chassis Grounding Point (PTX10003-160C)Chassis Grounding Point (PTX10003-160C)
    Figure 2: Chassis Grounding Point (PTX10003-80C)Chassis Grounding Point (PTX10003-80C)
  2. Secure the grounding lug to the protective earthing terminal with the washers and screws.
  3. Dress the grounding cable and ensure that it does not touch or block access to other device components and that it does not drape where people could trip over it.

Connecting AC Power to the PTX10003

The power supplies automatically detect whether there is AC or HVDC input voltage and manage the power accordingly. Each 3000 W AC/HVDC power supply module has a single AC or HVDC input and provides 12 V power to the system. The power supply in a PTX10003 is a hot-removable and hot-insertable field-replaceable unit (FRU). After removing the power cord from an individual power supply, you can remove and replace it without powering off the router or disrupting router functions.

CAUTION:

Do not mix AC/HVDC and DC power supplies in the same chassis.

Note:

Each power supply must be connected to a dedicated power source outlet.

To connect AC power to a PTX10003:

  1. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end of the strap to the ESD point on the device.
  2. Ensure that the power supplies are fully inserted in the chassis and the latches are secure.
  3. Locate the power cords shipped with the PTX10003; the cords have plugs appropriate for your geographical location. See PTX10003 Power System.
    Warning:

    Ensure that the power cord does not block access to router components or drape where people could trip over it.

  4. Connect each power supply to the power sources. Insert the coupler end of the power cord into the AC power cord inlet on the AC power supply faceplate (see Figure 3 and Figure 4).
    Note:

    The coupler end of the power cord model is APP-400.

    Figure 3: Connecting the AC Power Cord to the PTX10003-160CConnecting the AC Power Cord to the PTX10003-160C
    Figure 4: Connecting an AC Power Cord to the PTX10003-80C) Connecting an AC Power Cord to the PTX10003-80C)
  5. If the AC power source outlet has a power switch, set it to the off (O) position.
    Note:

    The PTX10003 powers on as soon as power is provided to the power supply. There is no power switch on the router.

  6. Insert the power cord plug into an AC power source outlet.
  7. If the AC power source outlet has a power switch, set it to the on (|) position.
  8. Verify that the status LEDs on each power supply are lit green.

    If the status LED is lit amber, remove power from the power supply, and replace the power supply (see Maintaining the PTX10003 Power Supplies). Do not remove the power supply until you have a replacement power supply ready.

See Also

Connecting DC Power to the PTX10003

Before you begin connecting DC power to the PTX10003:

  • Read General Electrical Safety Guidelines and Warnings, Action to Take After an Electrical Accident, and the following DC power warnings:

  • Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

    CAUTION:

    Before you connect DC power to the PTX10003, a licensed electrician must attach a cable lug to the grounding and power cables that you supply. A cable with an incorrectly attached lug can damage the router (for example, by causing a short circuit). See Connecting the PTX10003 to Ground

    Note:

    To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must connect the chassis to earth ground before you connect it to power. For installations that require a separate grounding conductor to the chassis, use the protective earthing terminal on the PTX10003 chassis to connect to the earth ground (see Connecting the PTX10003 to Ground).

    Note:

    Support for a 60 A power source was added in Junos OS Evolved Release 19.4. If you are using an earlier release, you’ll need to use an 80 A power source. Be sure you set the DIP switch to 80 A when installing the PTX10003 DC power supply module.

  • Install the DC power supply in the chassis. See Maintaining the PTX10003 Power Supplies. The battery returns of the DC power supply must be connected as an isolated DC return (DC-I).

  • Ensure that you have the following parts and tools available:

    • ESD grounding strap (provided)

    • Phillips (+) screwdriver, 1/4-in., with a torque range between 6 lb-in. (0.68 Nm) and 7 lb-in. (0.79 Nm) (not provided)

      CAUTION:

      You must use an appropriate torque-controlled tool to tighten the hex-nuts on the DC power cable connector. Do not overtighten the hex-nuts. Applying excessive torque damages the terminal block and the wiring tray.

    • Power cable or cables appropriate for your geographical location to connect DC power to the PTX10003. We recommend you use a 4 AWG gauge DC power cable such as a Panduit/LCDX4-14AH-L. The cable lugs are provided with the power supplies.

The DC power supply in a PTX10003 is a hot-removable and hot-insertable field-replaceable unit. You can remove and replace it without powering off the router or disrupting router functions. You do, however, need to remove power from the power supply before attempting to remove the unit.

This section does not apply to the AC/HVDC power supply.

Warning:

A DC-powered PTX10003 is intended for installation only in a restricted-access location.

CAUTION:

Do not mix AC and DC power supplies in the same chassis.

Note:

Each power supply must be connected to a dedicated power source outlet.

To connect DC power to a PTX10003:

  1. Attach an ESD grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point.
  2. Ensure that the power supplies are fully inserted in the chassis and the latches are secure.
  3. Depending on the input power source, set the DC input current selector (DIP switch) to 80 A or 60 A.
    Note:

    Support for a 60 A power source was added in Junos OS Evolved Release 19.4. If you are using an earlier release, you’ll need to use an 80 A power source. Be sure you set the DIP switch to 80 A when installing the PTX10003 DC power supply module.

    Figure 5 shows the location of the DC input current selector (sometimes called the “DIP switch”).

    Figure 5: PTX10003 DC Power Supply PTX10003 DC Power Supply
      1
    —

    Ejector lever

      4
    —

    Handle

      2
    —

    Status LED

      5
    —

    Terminal block cover

      3
    —

    DC input current selector (DIP switch)

    		 
  4. Open the cable manager latch on the terminal block cover of a power supply.
  5. Use a Phillips screwdriver to loosen the screw holding the cable manager latch to the power supply terminal block cover. See Figure 6.
    Figure 6: Loosening the Cable Manager Latch Loosening the Cable Manager Latch
  6. Remove the cable manager bracket to expose the four terminal studs.
  7. Install heat-shrink tubing insulation around the power cables.

    To install heat-shrink tubing:

    1. Slide the tubing over the portion of the cable where it is attached to the lug barrel. Ensure that tubing covers the end of the wire and the barrel of the lug attached to it.

    2. Shrink the tubing with a heat gun. Ensure that you heat all sides of the tubing evenly so that it shrinks around the cable tightly.

    Figure 7 shows the steps to install heat-shrink tubing.

    Note:

    Do not overheat the tubing.
    Figure 7: How to Install Heat-Shrink Tubing How to Install Heat-Shrink Tubing
  8. If you are using straight DC power cables, place the ends of the power cable connectors over the four terminal studs. See Figure 8.
    Figure 8: Connecting a Straight DC Power Cable to a DC Power Supply in a PTX10003 Connecting a Straight DC Power Cable to a DC Power Supply in a PTX10003
  9. Connect the power supply to a 80 A or 60 A power source by securing the power cables to the four terminal studs with hex nuts.
  10. Use a wrench to tighten the hex nuts by applying torque to between 6 lb-in. (0.68 Nm) and 7 lb-in. (0.79 Nm).
    Note:

    The PTX10003 powers on as soon as power is provided to the power supply. There is no power switch on the router.
    CAUTION:

    You must use an appropriate torque-controlled tool to tighten the hexnuts on the DC power cable connector. Do not overtighten the screws. Applying excessive torque damages the terminal block and the wiring tray.
  11. Repeat Step 3 through Step 8 to connect the other DC power supplies.
  12. Verify that the status LEDs on each power supply are lit green and on steadily.

    If the status LED is lit amber, remove power from the power supply, and replace the power supply (see Maintaining the PTX10003 Power Supplies). Do not remove the power supply until you have a replacement power supply ready. The power supplies must be installed in the PTX10003 to ensure proper airflow.

    CAUTION:

    Replace a failed power supply with a new power supply within 30 seconds of removal to prevent chassis overheating.
  13. Reattach the cable manager bracket that you removed in Step6 and tighten the thumb screw. See Figure 9.
    Figure 9: Reattaching the Cable Manager Bracket Reattaching the Cable Manager Bracket
  14. Close the cable manager latch to hold the power cables in place. See Figure 10 and Figure 11.

    Warning:

    Ensure that the power cables do not block access to device components or drape where people could trip over them.
Figure 10: Closing the Cable Manager Latch (PTX10003-160C)Closing the Cable Manager Latch (PTX10003-160C)
Figure 11: Closing the Cable Manager Latch (PTX10003-80C)Closing the Cable Manager Latch (PTX10003-80C)

See Also