Research on Process Parameters of Port-able Pulse Digital Radiographic Testing of Internal Structure of 35 kV Dry-type Current Transformer
For the internal winding and conductive rod location problems of the 35 kV dry-type current transformer,portable pulse digital radiogra-phy is used for non-destructive testing.After testing,it is determined that the appropriate testing process parameters for this type of dry-type current transformer are pulse count of 25,exposure time of 3 s and focal length of 1 000 mm.The above testing process parameters are used for digital radiographic testing on the defective current transformer,it is verified that the internal structural dimensions of the cur-rent transformer can be effectively tested under the process parameters,and it is found that the distance from the primary coil to the second-ary coil end face on the left side of the defective dry-type current transformer does not meet the design requirements.
Dry-type current transformerPortable pulse digital radiographic testingInternal structureProcess parameter
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