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Method for producing a heavy-current transformer

  • US 10,325,720 B2
  • Filed: 07/08/2016
  • Issued: 06/18/2019
  • Est. Priority Date: 10/31/2011
  • Status: Active Grant
First Claim
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1. A method for manufacturing a heavy-current transformer for a power source in order to provide a welding current to a resistance welding device, the heavy-current transformer comprising at least one primary winding and at least one secondary winding the method comprising:

  • connecting first inner surfaces of the at least one secondary winding with an I-beam of electrically conductive material of the heavy-current transformer by using a first soldering material at a first, higher melting temperature, andsubsequently soldering at least one contact plate of electrically conductive material with exterior surfaces of the at least one secondary winding by using a second soldering material at a second melting temperature that is lower as compared to the first melting temperature,wherein the at least one secondary winding is arranged within a recess of the I-beam, the first inner surfaces of the at least one secondary winding form first contacts directly connected to the I-beam, and the exterior surfaces of the at least one secondary winding form second contacts directly connected to the at least one contact plate.

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