
What is the standard procedure for laying 11 kV underground cables?
2025-08-14The laying of 11 kV underground cables is a multi-step process that requires careful planning and execution. The procedure typically includes:
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Route Survey and Planning: Identifying the precise cable route, avoiding other utilities, and conducting a geotechnical survey to assess soil conditions.
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Excavation and Trenching: Digging a trench according to specified dimensions and safety standards.
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cable laying: Using specialized equipment like cable drum jacks, rollers, and winches to lay the cable smoothly into the trench.
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Backfilling and Protection: Covering the cable with a protective layer of fine sand or thermal backfill, followed by brick or tile protection, and then restoring the trench.
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Jointing and Termination: Connecting cable sections and terminating them at switchgear or transformers.
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Testing and Commissioning: Performing insulation resistance, continuity, and high-voltage tests to ensure the integrity of the installed system.