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FusionStorage OBS 7.0 Hardware Installation Guide 06

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Installing PGND Cables and AC Power Cables for a Cabinet

Installing PGND Cables and AC Power Cables for a Cabinet

PGND cables and power cables must be installed for carrying power to components in the cabinet.

Prerequisites

  • The Cabinet has been installed.
  • The power switches of output terminals on the power distribution cabinet (PDC) are set to OFF.
  • All circuit breakers on the cabinet PDU are set to OFF.
  • Required devices have been prepared, including power cables and PGND cables.
  • Required materials have been prepared, including cable ties, wax strings, and PVC insulation tapes.
  • Required tools have been prepared, including diagonal pliers, cable cutters, Phillips screwdrivers, multimeters, and ladders.

Context

PDUs installed in a cabinet are used to supply 220 V 63 A and 220 V 32 A single-phase power to devices.

  • 220 V 63 A power supplies provide 16-channel 10 A output (from the IEC60320 C13 power socket) and 9-channel 16 A output (from the IEC60320 C19 power socket).
  • 220 V 32 A power supplies provide 20-channel 10 A output (from the IEC60320 C13 power socket) and 4-channel 16 A output (from the IEC60320 C19 power socket).

PDU connectors are the IEC60309-32A-compliant standard plug and socket, as shown in Figure 6-8. The connector used to connect to the PDU is a male connector, which has been connected to the PDU power cable before delivery. The connector used to connect to a PDC is a female socket. On the installation site, you need to connect the female socket to an AC power cable of the PDC and then to the male connector.

Figure 6-8 PDU power connectors

Procedure

  1. Route PGND cables and power cables.

    1. Read Site Survey Report to determine the layout, route, and length of PGND cables and power cables.
      NOTE:

      A cabinet supports both overhead and underfloor cabling. This section uses overhead cabling as an example to illustrate how to route cables.

    2. Use a cable cutter to cut off a piece of cable, and reserve a proper length, as shown in Figure 6-9.
      Figure 6-9 Cutting a cable
    3. Attach temporary labels to both ends of the cable for identification.

      The content on temporary labels can be either customized or be the same as that on engineering labels.

    4. Route PGND cables and power cables neatly along a cable manager, and keep them a proper distance from terminals to which they are to be connected.

  2. Install terminals for PGND cables and power cables.

  3. Install PGND cables.

    1. On the ground bar of a PDC, use a Phillips screwdriver to unfasten screws from ground terminals. Then, fix PGND cables, as shown in Figure 6-10.
      Figure 6-10 Fixing PGND cables on the ground bar
      NOTE:

      The tightening torque matches with the OT terminal specifications.

    2. Use a Phillips screwdriver to unfasten the terminal screw on the top or bottom of the cabinet mounting bar and fasten the other end of the PGND cable to the mounting bar.
      • In the overhead cabling, the other end of the PGND cable must be secured to the ground terminal on the top of the cabinet mounting bar.
      • In the underfloor cabling, the other end of the PGND cable must be secured to the ground terminal on the bottom of the cabinet mounting bar.

  4. Lift the cabinet cover to an angle of approximately 30 degrees and take out the PDU connectors.

    It is recommended that two people complete the preceding step.

    1. Open the latch at the top of the rear cabinet door and then push the top cover to an angle of 30 degrees, as shown in step 1 of Figure 6-11.
    2. Lead the two PDU connectors out of the two cable outlets on the cabinet cover, as shown in step 2 of Figure 6-11.
    3. Restore the cabinet cover.
    Figure 6-11 Taking out PDU connectors

  5. Connect a power cable to the PDU female socket.

    The power switch of the PDC for providing power for the cabinet must remain off to prevent fatal personal injury.

    1. Separate the male plug from the female socket, as shown in step 1 of Figure 6-12.
    2. Unlock the buckle in the middle of the female socket and disassemble the female socket by spinning it counterclockwise, as shown in step 2 of Figure 6-12.
    3. Route the power cable through the PDU female socket and connect a live line (brown), PGND cable (yellow and green), and neutral wire (blue) respectively to the L/+ jack, jack, and unidentified jack. Use a Phillips screwdriver to fasten the screws on the female socket to secure those lines, as shown in step 3 of Figure 6-12.
    4. Assemble the two parts of the female socket and insert the male plug to the female socket, as shown in step 4 of Figure 6-12.
    Figure 6-12 Connecting a power cable to the PDU female socket

  6. Connect the other end of the power cable to the wiring terminal of the uninterruptible power system (UPS) or AC PDC, as shown in Figure 6-13.

    Figure 6-13 Connecting power cables to a PDC

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Updated: 2019-07-17

Document ID: EDOC1100051333

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