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KINDS OF TRANSFORMERS

The following kinds of transformers are the most important ones:

  1. Power transformers. For the transmission and distribution of electric power.
  2. Auto-transformers. For converting voltages within relatively small limits to connect power systems of different voltages, to start AC. motors etc.
  3. Transformer for feed installations with static convertors. (Mercury are rectifiers, ignitrons, semi-conductor valves, etc.) When converting A C. into D. C. (rectifying) and converting D.C. into A C. (inverting).
  4. Testing transformers. For conducting tests at high and ultra-high voltages.
  5. Power transformers for special applications. Furnace, welding etc.
  6. Radio-transformers. It is used in radio engineering etc.

Note. Distribution transformers should be designed to have maximum efficiency at a load much lower than full-load (about 50 per cent).

Power transformers should be designed to have maximum efficiency at or near full-load.