Siemens Cast Coil Medium Voltage Transformers

Cast Coil transformers are designed for the most demanding customer requirements. The high voltage windings, which are the most sensitive and vulnerable part of any transformer, are cast under vacuum in molds using a solid high-strength fiberglass reinforced epoxy resin insulation system.

This solid insulation system protects the windings from distortion during power surges, the crushing forces of short circuits, and provides unequalled integrity required for operating voltages up to 46 kV and 250 kV BIL. The electrical integrity of this design is complemented by its flexible construction geometry. Cast Coil units utilize round cruciform core and coil designs for specifically harsh loads that may have brutal short circuit demands.

Typical Applications:

  • Offshore Drilling Platforms

  • Windmills

  • Traction Power Substations

  • Automotive Assembly

  • Wastewater Treatment

  • Unit Substations close-coupled to medium voltage switchgear and low voltage switchgear or switchboards



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