Underground transformer in the utility tunnel

In the underground transformer housed within the utility tunnel, the load switch, oil-level indicator, fuse, pressure‑vacuum gauge, pressure relief valve, transformer temperature gauge, no‑excitation tap changer, high‑voltage connector plug, and low‑voltage molded‑joint fittings are all mounted on the peripheral side walls of the transformer oil tank. This structural design enables side‑access operation, effectively addressing the bulky footprint associated with conventional top‑access configurations. Moreover, the low‑voltage molded‑joint fittings inside the transformer can accommodate different current ratings by selecting appropriate copper busbars, offering enhanced flexibility. When connected to a sealing cover, the assembly eliminates the need for an additional sealing enclosure, resulting in a simple, convenient, and reliable construction.

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Oil-Immersed Power Transformer Series

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Product Description

　　Product Overview:

　　　　In the underground transformer housed within the utility tunnel, the load switch, oil-level indicator, fuse, pressure‑vacuum gauge, pressure relief valve, transformer temperature gauge, no‑excitation tap changer, high‑voltage connector plug, and low‑voltage molded‑joint fittings are all mounted on the peripheral side walls of the transformer oil tank. This structural design enables side‑access operation, effectively addressing the bulky footprint associated with conventional top‑access configurations. Moreover, the low‑voltage molded‑joint fittings inside the transformer can accommodate different current ratings by selecting appropriate copper busbars, offering enhanced flexibility. When connected to a sealing cover, the assembly eliminates the need for an additional seal, resulting in a simple, convenient, and reliable construction.

Product Features:
　　1. Underground transformer for utility tunnels, comprising an underground transformer oil tank body, as well as a load switch, oil level indicator, fuse, pressure‑vacuum gauge, pressure relief valve, three high‑voltage connector plugs, four low‑voltage sealed molded connectors, a transformer temperature gauge, and an on‑load tap changer.
　　2. The enclosure is fabricated from stainless steel and treated with multi‑layer anti‑corrosion measures, ensuring that, from the base to the wall, it can withstand 50 years of underground immersion without exhibiting even the slightest sign of corrosion.
　　3. The load switch, oil-level indicator, fuse, pressure‑vacuum gauge, pressure relief valve, transformer temperature gauge, and no‑excitation tap changer are all mounted on the side wall of the same oil tank enclosure; the high‑voltage connector plugs are located on the high‑voltage side of the transformer oil tank, with the three high‑voltage connector plugs arranged in a straight line along the side wall of the tank.

　　Ordering Instructions:
　　When placing your order, please provide the following parameters:
　　1. Product Model
　　2. Rated Capacity
　　3. Voltage Combination
　　4. Scope of Adjustment
　　5. Frequency
　　6. Connection Group Designation
　　7. Short-circuit impedance
　　8. For products with special requirements, specify the technical specifications.