Substation transformers transfer the incoming high-voltage to the next lower voltage level. As an example, an incoming high-voltage of 400 kV would be transferred down to 220 kV.
In general, substation transformers are equipped with on-load-tap-changers (OLTC). Incoming transmission lines are connected to the transformers through bushings and cables through cable boxes and cable sealing ends. These transformers are built in core form with auto-connected windings, ie common main winding and a separate low voltage winding.
Product scope
- Ratings up to 1,300 MVA (sometimes higher ratings are required)
- Primary voltage up to 765 kV and higher
- Secondary voltage generally <= 230kV or higher depending on the grid configuration
- Load tap changers generally required
- Single- or three-phase
Why our core intertie transformers?
- Our track record of 1,400+ units delivered since 1995
- Short circuit performance at twice the industry standard
- Proven track record in meeting customer performance requirements. Ask for our test floor failure statistics
- 12 factories - one global approach - bringing consistency, delivery performance and technology
Why our shell intertie transformers?
- Design technology eliminates the risk of a hot spot
- Outstanding thermal performance resulting from directed oil flow, minimization of losses and control of the hot spot
