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Where is the insulation performance of the extended half brick double variable shell reflected

source：m.czdmad.com  |  Release time：2025年11月17日
       The elongated semi tiled double transformer shell is mostly a box type substation shell with ceramic tiles. Its insulation performance is reflected in the protection of the double insulation structure, insulation of the outer shell and inner lining materials, and isolation from environmental damage to insulation. It can well meet the insulation requirements of outdoor electrical equipment, ensure the operation of the substation and the safety of personnel, as follows:
1. The double shell forms a double insulation barrier
       The "dual variable shell" design of the shell conforms to the protection logic of dual insulation, forming a dual guarantee of basic insulation and additional insulation. The inner shell can directly adapt to the live lines and equipment components inside the substation, forming a basic insulation to prevent current leakage; The outer shell and inner shell are independent of each other. Even if the inner insulation is accidentally damaged, the outer shell can still serve as an additional insulation to prevent current from penetrating the entire shell, greatly reducing the risk of electric shock and electrical leakage, and building a solid insulation defense line for internal precision electrical components.
2. The shell and lining materials block current conduction
      The main body of this type of shell is often packaged with insulation materials such as composite plates, and some parts are also supported by stainless steel plates. The supporting components are treated with special insulation and anti-corrosion measures to prevent metal parts from conducting electricity. At the same time, the semi tiled design on the surface of the shell can also strengthen insulation. The core material of ceramic tiles is ceramic, which is an excellent insulation material and does not have current conductivity, further isolating internal current from external contact. The inner and outer materials complement each other, cutting off the path for current to propagate outward structurally and reducing the risk of electric shock when personnel accidentally touch the shell.
3. Reduce the interference of environmental factors on insulation performance
      Its enclosed structure can reduce the damage to the internal insulation layer caused by outdoor environmental factors such as humidity, rain, snow, and dust. On the one hand, a humid environment can easily reduce the insulation performance of ordinary shells, while the outer layer of the shell with tiles and the inner layer of the composite board have good sealing properties, which can prevent water vapor from infiltrating and eroding the insulation layer of the circuit, avoiding leakage problems caused by insulation moisture; On the other hand, the surface of ceramic tiles is smooth and easy to clean, which can prevent dust accumulation from forming conductive pathways, maintain stable insulation effect for a long time, and adapt to outdoor substations that are exposed to natural environments for a long time.
4. Assist in ensuring the safety supporting effects related to insulation
      Its overall enclosed structure can avoid the exposure of internal circuits, not only reducing the possibility of external damage to the insulation layer of the circuit, but also preventing external debris from contacting the live circuit and causing short circuits, indirectly ensuring the stable operation of the insulation system. Part of the shell is equipped with dedicated locks and enclosed designs, which can also prevent human tampering with the circuit and prevent damage to the original insulation layout due to circuit modification, ensuring that the insulation system of the entire shell is always in a complete and reliable state.