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Hardware Installation and Maintenance Guide

CloudEngine 8800, 7800, 6800, and 5800

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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 Power Cables

Assembling Power Cables

Assembling the OT Terminal and Power Cable

Context

Figure 14-1 shows the components of an OT terminal and a power cable.

Figure 14-1 Components of an OT terminal and a power cable

A. Heat-shrinkable tubing

B. Bare crimping terminal

C. Insulation

D. Conductor

Procedure

  1. Based on the cross-sectional area of the cable conductor, strip a length of insulation coating C to expose the conductor D of length L1, as shown in Figure 14-2. The recommended values of L1 are listed in Table 14-10.

    Figure 14-2 Stripping a power cable (OT terminal)

    • When you strip a power cable, do not damage the conductor of the cable.
    • If the bare crimping terminal is not provided by Huawei, the value of L1 is 1 mm (0.04 in.) to 2 mm (0.08 in.) greater than the value of L.
    Table 14-10 Mapping between the cross-sectional area of the conductor and the value of L1

    Cross-Sectional Area of Conductor (mm2(in.2))

    Value of L1 (mm(in.))

    Cross-Sectional Area of Conductor (mm2(in.2))

    Value of L1 (mm(in.))

    1 (0.002)

    7 (0.28)

    10 (0.015)

    11 (0.43)

    1.5 (0.002)

    7 (0.28)

    16 (0.025)

    13 (0.51)

    2.5 (0.004)

    7 (0.28)

    25 (0.039)

    14 (0.55)

    4 (0.006)

    8 (0.31)

    35 (0.054)

    16 (0.63)

    6 (0.009)

    9 (0.35)

    50 (0.077)

    16 (0.63)

    NOTE:

    If you are proficient in assembling OT terminals and power cables, you can obtain the value of L1 by comparing the part to be crimped with the power cable.

  2. Put the heat-shrinkable (A) tubing onto the bare crimping terminal, as shown in Figure 14-3.

    Figure 14-3 Putting the heat shrink tubing onto the bare crimping terminal

  3. Put the OT terminal B onto the exposed conductor, and ensure that the OT terminal is in good contact with the insulation coating C, as shown in Figure 14-3.

    After the conductor is fed into the OT terminal, the protruding part of the conductor, or L2 in Figure 14-3, must not be longer than 2 mm (0.08 in.).

  4. Crimp the joint parts of the bare crimping terminal and the conductor, as shown in Figure 14-4.

    NOTE:

    The shapes of crimped parts may vary with the crimping dies.

    Figure 14-4 Crimping the joint parts of the bare crimping terminal and the conductor (OT terminal)

  5. Push the heat shrink tubing (A) toward the connector until the tube covers the crimped part, and then use a heat gun to heat the tube, as shown in Figure 14-5.

    Figure 14-5 Heating the heat shrink tubing (OT terminal)

    Stop heating the shrink tubing when the connector is securely locked in the shrink tubing. Do not heat the shrink tubing too long as this may damage the insulation coating.

Assembling the JG Terminal and Power Cable

Context

Figure 14-6 shows the components of a JG terminal and a power cable.

Figure 14-6 Components of a JG terminal and a power cable

A. JG terminal

B. Heat-shrinkable tubing

C. Insulation layer of a power cable

D. Conductor of a power cable

Procedure

  1. Strip a part of the insulation to expose the cable conductor with a length of L, as shown in Figure 14-7. The recommended values of L are listed in Table 14-11.

    • When you strip a power cable, do not damage the conductor of the cable.
    • If the bare crimping terminal is not provided by Huawei, you can adjust the value of L as required.
    Figure 14-7 Stripping a power cable (JG terminal)

    Table 14-11 Mapping between the cross-sectional area of the conductor and the value of L

    Cross-Sectional Area of Conductor (mm2(in.2))

    Value of L (mm(in.))

    16 (0.025)

    13 (0.51)

    25 (0.039)

    14 (0.55)

    35 (0.054)

    16 (0.63)

    50 (0.077)

    16 (0.63)

  2. Put the heat shrink tubing onto the bare crimping terminal, as shown in Figure 14-8.

    Figure 14-8 Putting the heat shrink tubing onto the bare crimping terminal

  3. Put the bare crimping terminal onto the exposed conductor, and ensure that the bare crimping terminal is in good contact with the insulation of the power cable, as shown in Figure 14-8.
  4. Crimp the joint parts of the bare crimping terminal and the conductor, as shown in Figure 14-9.

    Figure 14-9 Crimping the joint parts of the bare crimping terminal and the conductor (JG terminal)

  5. Push the heat shrink tubing toward the connector until the tube covers the crimped part, and then use a heat gun to heat the tube, as shown in Figure 14-10.

    Figure 14-10 Heating the heat shrink tubing (JG terminal)

Assembling the Cord End Terminal and the Power Cable

Context

Figure 14-11 shows the components of a cord end terminal and a power cable.

Figure 14-11 Components of a cord end terminal and a power cable

A. Cord end terminal

B. Insulation layer of a power cable

C. Conductor of a power cable

Procedure

  1. Strip a part of the insulation to expose the cable conductor with a length of L1, as shown in Figure 14-12. The recommended values of L1 are listed in Table 14-12.

    When you strip a power cable, do not damage the conductor of the cable.

    Figure 14-12 Stripping a power cable (cord end terminal)

    Table 14-12 Mapping between the cross-sectional area of the conductor and the value of L1

    Cross-Sectional Area of Conductor (mm2(in.2))

    Value of L1 (mm(in.))

    Cross-Sectional Area of Conductor (mm2(in.2))

    Value of L1 (mm(in.))

    1 (0.002)

    8 (0.31)

    10 (0.015)

    15 (0.59)

    1.5 (0.002)

    10 (0.39)

    16 (0.025)

    15 (0.59)

    2.5 (0.004)

    10 (0.39)

    25 (0.039)

    18 (0.71)

    4 (0.006)

    12 (0.47)

    35 (0.054)

    19 (0.75)

    6 (0.009)

    14 (0.55)

    50 (0.077)

    26 (1.02)

  2. Put the cord end terminal onto the conductor, and ensure that the conductor is aligned with the edge of the cord end terminal, as shown in Figure 14-13.

    After the conductor is fed into the cord end terminal, the protruding part of the conductor must not be longer than 1 mm (0.04 in.).

    Figure 14-13 Putting the cord end terminal onto the conductor

  3. Crimp the joint parts of the cord end terminal and the conductor, as shown in Figure 14-14.

    Figure 14-14 Crimping the cord end terminal and the conductor

  4. Check the maximum width of the tubular crimped terminal. The maximum width of a tubular crimped terminal is listed in Table 14-13.

    Table 14-13 Maximum width of a tubular crimped terminal

    Cross-Sectional Area of Tubular Terminal (mm2(in.2))

    Maximum Width of Crimped Terminal W1 (mm(in.))

    0.25 (0.0004)

    1 (0.04)

    0.5 (0.0008)

    1 (0.04)

    1.0 (0.0015)

    1.5 (0.06)

    1.5 (0.0023)

    1.5 (0.06)

    2.5 (0.0039)

    2.4 (0.09)

    4 (0.006)

    3.1 (0.12)

    6 (0.009)

    4 (0.16)

    10 (0.015)

    5.3 (0.21)

    16 (0.025)

    6 (0.24)

    25 (0.039)

    8.7 (0.34)

    35 (0.054)

    10 (0.39)

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Updated: 2019-03-21

Document ID: EDOC1000036822

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