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Connect the MX10004 to Power

The Juniper Networks MX10004 routers support AC, DC, high-voltage alternating current (HVAC), and high-voltage direct current (HVDC) power supplies. To connect power to an MX10004 router, complete the tasks in this section.

Note:

Do not mix power supply models in the same chassis in a running environment.

Connect the MX10004 Router to Earth Ground

To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must connect the chassis to earth ground. Make this connection before you connect the router to power.

You must install the Juniper Networks MX10004 router in a restricted-access location and ensure that the chassis is always properly grounded.

The MX10004 has a two-hole protective grounding terminal provided on the chassis. See Figure 2. 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 grounding lug connection. This tested system meets or exceeds all applicable EMC regulatory requirements with the two-hole protective grounding terminal.

If an external ground connection is required, ensure that a licensed electrician has attached an appropriate grounding lug to the grounding cable you supply.

Warning:

Using a grounding cable with an incorrectly attached lug can damage the router.
Note:

Mount your router in the rack before attaching the grounding lug to the router; see Mount the Juniper Networks MX10004 Router Using the JNP10004-RMK-4POST Rack-Mount Kit.

Ensure that you have the following parts and tools available:

  • An electrostatic discharge (ESD) grounding strap (provided).

  • Protective earthing terminal lug (provided).

  • Grounding cable for your MX10004 (not provided)—The grounding cable must be 4 AWG (21.1 mm²) stranded wire and should be rated 75 °C or per local electrical code.

  • Grounding lug for your grounding cable (provided)—This bracket attaches to the lower left corner of the router chassis next to the bottom power supply, providing a protective earthing terminal for the router. The grounding lug required is a Panduit LCD6-14A-L or equivalent.

  • A number 3 Pozidriv or Phillips screwdriver (not provided) to tighten the two screws that are mounted on the chassis.

The provided terminal lugs for the JNP10K-PWR-DC2 are Panduit LCD4-14A-L, or equivalent, and sized for 4 AWG (21.1 mm2) power source cables. We recommend that you install heat-shrink tubing insulation around the crimped section of the power cables and lugs.

An AC-powered MX10004 gets additional grounding when you plug the power supply in the router into a grounded AC power outlet using an AC power cord appropriate for your geographical location. See MX10004 Power Cable Specifications.

To connect the MX10004 router to earth ground:

  1. Verify that a licensed electrician has attached the cable lug (provided in the accessory kit) to the grounding cable.
  2. Connect the other end of the grounding cable to a proper earth ground, such as the rack in which the router is mounted.
  3. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to one of the ESD points on the chassis. See Figure 1.
    Figure 1: ESD Point for the MX10004 ESD Point for the MX10004
      1
    —

    Grounding point

    		 
  4. Remove the two M6 screws with attached washers on the chassis using either a Pozidriv or Phillips screwdriver.
  5. Place the chassis grounding lug and cable over the screw holes with the cable connection pointing to the left. See Figure 2.
    Figure 2: Connect a Grounding Cable to the MX10004 Connect a Grounding Cable to the MX10004
  6. Place the two screws with attached washers over the grounding lug and grounding cable.
  7. Tighten the two M-6 screws using a Pozidriv or Phillips screwdriver.
  8. Secure the grounding cable and ensure that it doesn’t touch or block access to other device components and that it doesn’t drape where people can trip over it.

Connect AC Power to an MX10004 Router

Before you begin to connect power to the Juniper Networks MX10004 router, review how to prevent ESD damage. See Prevention of Electrostatic Discharge Damage.

After you ground the router, add power supplies, and apply power to the router, the system initiates the power-on sequence. This sequence can start incrementally with a single power supply, but we do not recommend that you bring up an MX10004 system with fewer than three power supplies.

To connect AC power to an MX10004 router:

  1. Connect the router to earth ground (see Connect the MX10004 Router to Earth Ground).
    CAUTION:

    To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, ground the MX10004 properly before you connect it to power.

    For installations that require a separate grounding conductor to the router's chassis, use the protective earthing terminal on the rear panel of the MX10004. Connect from that terminal to the earth ground.

    Note:

    An MX10004 router gets additional grounding when you plug the power supply in the router into a grounded AC power outlet. Use the AC power cord appropriate for your geographical location to make this connection. See MX10004 Power Cable Specifications.
  2. Install power supplies in the router and apply power. See Install a JNP10K-PWR-AC2 Power Supply and Install a JNP10K-PWR-AC3 Power Supply.

Connect DC Power to an MX10004 Router

Before you begin to connect power to the Juniper Networks MX10004 router, review how to prevent electrostatic discharge (ESD) damage. See Prevention of Electrostatic Discharge Damage.

The overall process of bringing up a DC-powered router involves the proper cabling of the individual power supplies, adding the power supplies to the router, and supplying power. The power-on sequence can start incrementally with a single power supply; however, we recommend that you use three or more power supplies.

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

To connect DC power to an MX10004 router:

  1. Connect the router to earth ground (see Connect the MX10004 Router to Earth Ground).
  2. To connect DC power to a JNP10K-PWR-DC2 power supply, see Install a JNP10K-PWR-DC2 Power Supply.
  3. To connect HVDC power to a JNP10K-PWR-AC2 power supply, see Install a JNP10K-PWR-AC2 Power Supply.

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