Power sources for welding

Welding transformers

An indispensable component for providing the high currents required for welding, the selection of a welding transformer calls for precise matching to the specific application.

Depending on the power class of the welding inverter,  either one or two transformers are used. The transformation ratio of the windings determines the secondary voltage in the welding circuit.

A maximum welding current is derived as a function of the duty cycle, which in turn is determined by the joining process. Integrated sensors for current and temperature measurement are standard.

Since our welding transformers are usually supplied in combination with one of our welding power sources, they are based on the power class.

As standard, we offer transformers with a primary voltage of 500V, but optionally also 600V. Also included are a built-in rectifier set (diode pack) plus current measurement coil and temperature monitoring for the transformer and diodes.

For our small parts welding systems, the transformers are either supplied as separate items (Primus) or installed internally (Filius, iSpot). You can find information on the corresponding pages here.