What is the core material for a 500KVA - 415V resistance welding transformer?

Many transformers are manufactured with a core made by stacking sheets of magnetic permeable steal. This is common for large machine press welder transformers. This type of transformers can be manufactured into large transformers for a large application like 500 KVA.

Transformer Stacked core and wound core

Typical Stacked and Wound Core Steel Transformer Components

Wound cores are used for robotic weld gun transformers. They allow for higher outputs with smaller weight and sizes.

The actual core material used for the transformers in these applications can vary by the transformer manufacturer and design. Contact the manufacturer for information on the material used in the core.

Machine Type Transformer

Machine Type Transformer

Reference:  RWMA Resistacne Welding Manual, Chapter 19

                   Roman Manufacturing Inc.




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