Installing a hot-plug DC power input module

The following input power cord option might be purchased from an authorized Hewlett Packard Enterprise reseller:

J6X43A—HPE 12 AWG 48 V DC 3.0 m Power Cord

If you are not using an input power cord option, the power supply cabling should be made in consultation with a licensed electrician and be compliant with local code.

If you are replacing the factory installed ground lug, use the KST RNB5-5 crimp terminal ring or equivalent. Use an M5-0.80 x 8 screw to attach the ground lug to the power input module.

WARNING: To reduce the risk of electric shock, fire, and damage to the equipment, you must install this product in accordance with the following guidelines:
  • This power supply is intended only for installation in Hewlett Packard Enterprise servers located in a restricted access location.
  • This power supply is not intended for direct connection to the DC supply branch circuit. Only connect this power supply to a power distribution unit (PDU) that provides an independent overcurrent-protected output for each DC power supply. Each output overcurrent-protected device in the PDU must be suitable for interrupting fault current available from the DC power source and must be rated no more than 40A.
  • The PDU output must have a shut-off switch or a circuit breaker to disconnect power for each power supply. To completely remove power from the power supply, disconnect power at the PDU. The end product may have multiple power supplies. To remove all power from the product, disconnect the power for each power supply.
  • In accordance with applicable national requirements for Information Technology Equipment and Telecommunications Equipment, this power supply only connects to DC power sources that are classified as SELV or TNV. Generally, these requirements are based on the International Standard for Information Technology Equipment, IEC 60950-1. In accordance with local and regional electric codes and regulations, the DC source must have one pole (Neutral/Return) reliably connected to earth ground.
  • You must connect the power supply ground screw located on the front of the power supply to a suitable ground (earth) terminal. In accordance with local and regional electric codes and regulations, this terminal must be connected to a suitable building ground (earth) terminal. Do not rely on the rack or cabinet chassis to provide adequate ground (earth) continuity.
  1. Access the product rear panel.
  2. Remove the power supply blank.
    Removing the power supply blank
  3. Remove the ring tongue.
    Removing the ring tongue from the top of the PSU
  4. Crimp the ring tongue to the ground cable from the -48 V DC power source.
    Crimping the ring tongue to the ground cable
  5. Remove the terminal block connector.
    Removing the terminal block connector
  6. Loosen the screws on the terminal block connector.
    Loosening the screws on the terminal block connector
  7. Attach the ground (earthed) wire to the ground screw and washer and tighten to 1.47 N m (13 lb-in) of torque. The ground wire must be connected before the -48 V wire and the return wire.
    The ground wire must be connected before the -48 V wire and the return wire.
    Attaching the ground wire to the ground screw
  8. Insert the -48 V wire into the left side of the terminal block connector, and then tighten the screw to 1.3 N m (10 lb-in) of torque.
    Inserting the -48 V wire into the left side of the terminal block connector
  9. Insert the return wire into the right side of the connector, and then tighten the screw to 1.3 N m (10 lb-in) of torque.
    Inserting the return wire into the right side of the connector
  10. Install the terminal block connector in the power input module.
    Installing the terminal block connector
  11. To prevent accidental power cord disconnection when sliding the server in and out of the rack, secure the power cord, wires, and/or cables in the strain relief strap attached to the power input module handle:
    1. Unwrap the strain relief strap from the power input module handle.
      CAUTION: Avoid tight bend radii to prevent damaging the internal wires of a power cord or a server cable. Never bend power cords and server cables tight enough to cause a crease in the sheathing.
    2. Secure the wires and cables with the strain relief strap. Roll the extra length of the strap around the power input module handle.
      Securing the power cords with the strain relief strap
  12. Slide the power input module into the bay until it clicks into place.
    Installing the power input module
  13. Make sure the -48 V DC power source is off or the PDU breaker is in the off position, and then connect the power cord to the -48 V DC power source or PDU.
  14. Turn on the -48 V power source or switch the PDU breaker to the on position to supply -48 V to the power supply.
  15. Be sure that the power supply LED is green.