Fixture type transformers sometimes referred to as multiple spot transformer are used for multi-spot welding fixtures. These AC transformers run from 25 to 200 KVA. They can be built with outputs for either one or two secondary circuits. The secondary’s will fire together with the same power and settings sent from the weld control.
Fixture Type Transformer with two Secondary’s
Below is a schematic of an application of a fixture type transformer in use.
Series Weld with Multiple Spot Fixture Type Transformer
Reference: RWMA Manual- Fourth Edition, 19
Roman Manufacturing Inc