The skeleton of an amorphous alloy transformer mainly refers to the structural components that support and fix the iron core and windings, playing a crucial role in ensuring the mechanical strength and electrical performance of the transformer. Here is a detailed introduction:

　　Structure and Function

　　Supporting the Core and Windings: The skeleton provides a stable framework to hold the amorphous alloy core and windings in place, ensuring they maintain their relative positions during operation. For example, in a three - phase five - column amorphous alloy transformer, the skeleton needs to accurately position each column of the core and the corresponding windings.

　　Mechanical Fixing: It withstands mechanical forces generated during the operation of the transformer, such as electromagnetic forces and vibration forces, and prevents the core and windings from shifting or deforming. In the case of short - circuit faults, it also needs to have sufficient strength to withstand the huge short - circuit impact force.

　　Electrical Insulation: The skeleton needs to have good electrical insulation properties to isolate the core from the windings and between different windings to prevent electrical breakdown and ensure the safe operation of the transformer.

　　Common Structural Forms

　　Rectangular Framework: As shown in some patent documents, there is a rectangular insulating framework arranged inside the low - voltage coil. This structure can effectively support the winding and has a certain space to accommodate the wires. At the same time, it can also play an insulating role.

　　Combined Framework: For some large - capacity or special - structure amorphous alloy transformers, a combined framework structure may be adopted, which is composed of multiple parts to jointly complete the functions of supporting, fixing, and insulating the core and windings.

　　Materials

　　Insulating Plastics: Such as BMC (Bulk Molding Compound) unsaturated polyester dough molding plastics, which have excellent electrical performance, mechanical properties, heat resistance, and chemical corrosion resistance, and are often used to make insulating partitions and other components in the transformer skeleton.

　　Insulating Papers and Films: Materials such as polyester films are also commonly used in the skeleton structure. For example, the conductor of the SCBH15 amorphous alloy core dry - type distribution transformer is integrally covered with DuPont polyester film, which can not only play an insulating role but also protect the conductor.

　　Influence on Transformer Performance

　　Short - Circuit Resistance: A reasonable skeleton structure can effectively transfer the radial force generated by the coil during a short - circuit to the skeleton and clamping pieces, avoiding damage to the amorphous alloy core and improving the short - circuit resistance of the transformer.

　　Insulation Performance: The insulation performance of the skeleton material and structure directly affects the overall insulation level of the transformer. Good insulation can ensure the long - - term stable operation of the transformer without aging or breakdown.

　　Mechanical Stability: A strong and stable skeleton can reduce the vibration and noise of the transformer during operation, improve the mechanical stability of the transformer, and is conducive to the long - term reliable operation of the transformer.