Energy efficient transformer
Encyclopedia
In a typical power distribution grid, electric transformer
Transformer
A transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors—the transformer's coils. A varying current in the first or primary winding creates a varying magnetic flux in the transformer's core and thus a varying magnetic field...

 power loss typically contributes about 40-50% of the total transmission & distribution loss. Energy efficient transformers are therefore an important means to reduce T&D loss. With the improvement of electrical steel
Electrical steel
Electrical steel, also called lamination steel, silicon electrical steel, silicon steel, relay steel or transformer steel, is specialty steel tailored to produce certain magnetic properties, such as a small hysteresis area and high permeability.The material is usually manufactured in the form of...

 (silicon steel) properties, the losses of a transformer in 2010 can be half that of a similar transformer in the 1970s. With new magnetic materials, it is possible to achieve even higher efficiency. The amorphous metal transformer
Amorphous metal transformer
Amorphous Metal Transformer is a type of energy efficient transformer found on electric grids. The magnetic core of this transformer is made with amorphous metal , which is easily magnetized / demagnetized. Typically, core loss can be 70–80% less than its traditional counterpart...

is a modern example.
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