
What is the standard procedure for laying 132 kV underground cables?
2025-08-14The standard procedure for 132 kV cable laying is a meticulously planned and executed process to ensure safety and long-term reliability. It typically involves several critical stages:
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Route Survey and Trenching: A detailed survey is performed to determine the optimal route, followed by excavation to create a trench of the correct dimensions.
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Cable Drum Handling: Cable drums are transported and mounted on specialized cable drum jacks or trailers, ensuring safe and controlled unreeling.
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Cable Pulling: A cable winch and a series of underground-Cable-Laying-Equipment-and-Tools.html target='_blank'>cable rollers and bellmouths are used to pull the cable into the trench or duct. The pulling tension is constantly monitored to avoid damage.
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Backfilling and Protection: The cable is surrounded by a bedding layer of sand, followed by concrete protective covers or tiles, and then the trench is backfilled and compacted.
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Jointing and Termination: Trained technicians perform specialized high voltage cable jointing and termination to connect cable sections and link them to substations or other equipment.