A manufacturing process of an isolation transformer

Abstract

The invention relates to the technical field of transformers, in particular to a manufacturing technology of an isolation transformer. The technology includes the steps that a transformer body is assembled; the transformer body is arranged on an iron core in a sleeving mode; the transformer body and the iron core are installed in an oil tank; a sleeve tool is installed; vacuum drying treatment isconducted; oil is injected into the dried transformer body assembly; after the transformer body assembly obtained after oil injection is still placed, the oil is discharged, and the sleeve tool is disassembled; a silicone rubber sleeve and a conductive bar are assembled; the transformer assembly is subjected to vacuum oil injection; a leakage checking tool is installed for leakage checking; an expansion device is assembled for oil supplementation; a detection test is carried out. Steps of the manufacturing technology are compact and ordered; in the drying procedure of the transformer body, drying and oil injection are conducted on the whole assembled transformer body, so that the problem that when the transformer body is assembled after independent drying, the transformer body is affectedby dampness for the second time is avoided; the high-voltage coil is distributed outside the inner low-voltage coil, so that the voltage tolerance of the obtained isolation transformer is high, uniform in electric field, high in interference signal shielding capacity, small in overall size and good in heat dissipation performance.

Description

[0001] The invention relates to the technical field of transformers, in particular to a manufacturing process of an isolation transformer. Background technique [0002] Isolation transformer refers to a transformer with electrical isolation between the input winding and the output winding. The isolation transformer is used to avoid accidental contact with the live body at the same time. The isolation of the transformer is to isolate the respective currents of the primary and secondary coils. [0003] The main function of the isolation transformer is to completely insulate the primary side from the secondary side and also isolate the circuit. In addition, the high-frequency loss of the iron core is used to suppress high-frequency clutter from entering the control loop. Using an isolation transformer to suspend the secondary to the ground can only be used in occasions where the power supply range is small and the line is short. At this time, the capacitance current of the syste...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an isolation transformer manufacturing process for the deficiencies of the existing technology, which is convenient to manufacture and compact in process. After the body is installed, it is dried and oiled as a whole, so as to avoid secondary moisture when the body is separately dried and assembled. At the same time, the high-voltage coil is arranged inside the device body, and the low-voltage coil is arranged outside the device body, which ensures the quality of the isolation transformer and reduces the volume of the isolation transformer

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