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OceanStor 9000 V300R006C20 Hardware Installation Guide 05

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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).
Assembling an OT Terminal with a Power Cable

Assembling an OT Terminal with a Power Cable

For PGND cables and power cables connected between cabinets and the power system, cut a proper length of cables based on site requirements and crimp OT terminals to these cables.

Prerequisites

  • The cable jacket or insulation layer has no filth, bumps, dents, damage, or unrecoverable scratches.
  • The connector has no obvious damage, cracks, corrosion, or rust.
  • A cable of a proper length has been obtained.
  • Requisite installation tools and materials are as follows:
    • Crimping tool
    • Cable cutter
    • Gloves
    • Heat gun
    • Wire stripper
    • Handsaw

Context

Figure 15-161 shows the components of an OT terminal and a power cable.
Figure 15-161  Components of an OT terminal and a power cable

A

Heat shrink tubing

B

OT terminal

C

Cable insulation layer

D

Cable conductor

Procedure

  1. Watch the cross-sectional area of the cable conductor and strip part of the insulation layer C to expose a length L1 of the cable conductor D, as shown in Figure 15-162.

    • When stripping the insulation layer, do not damage the cable conductor inside.
    • If the OT terminal is not provided by Huawei, adjust L1 by adding 1 or 2 mm to the actual OT terminal length L: L1 = L + 1 or 2 mm.
    Figure 15-162  Stripping the power cable (OT terminal)

    Table 15-74 lists recommended values for L1.

    Table 15-74  Mapping between the conductor cross-sectional area and L1

    Conductor Cross-Sectional Area (mm2)

    Cable Stripping Length L1 (mm)

    Conductor Cross-Sectional Area (mm2)

    Cable Stripping Length L1 (mm)

    1

    7

    10

    11

    1.5

    7

    16

    13

    2.5

    7

    25

    14

    4

    8

    35

    16

    6

    9

    50

    16

  2. Insert the cable into the heat shrinking tubing A, as shown in Figure 15-163.
  3. Put the OT terminal B onto the exposed conductor, and ensure that the OT terminal contacts the insulation layer C, as shown in Figure 15-163.

    After installing the OT terminal to the cable, ensure that L2, which is the length of the conductor extending out of the OT terminal, is not greater than 2 mm.

    Figure 15-163  Installing the heat shrink tubing and OT terminal

  4. Crimp the OT terminal tail into the cable conductor using the crimping tool, as shown in Figure 15-164.

    NOTE:

    The shapes of crimped end faces may vary if different crimping molds are used.

    Figure 15-164  Crimping the OT terminal

  5. Blow the heat shrink tubing.
    1. Push the heat shrink tubing A towards the connector until covering the part where the OT terminal and cable conductor are crimped.
    2. Turn off the heat gun if the heat shrink tubing has contacted the connector. Otherwise, the insulation layer is to be burned.

      Use the heat gun to blow the heat shrink tubing until it tightly wraps the connector, as shown in Figure 15-165.

    Figure 15-165  Blowing the heat shrink tubing (OT terminal)

Translation
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Updated: 2019-03-26

Document ID: EDOC1000185366

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