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Detailed classification and working principle of transformer

Transformers are widely used in many places, it has many types, do you know how to classify the transformers?

Transformers have different conditions of use, installation site, have different voltage levels and capacity levels, with different structures and cooling methods, it should be classified according to different principles.

1. according to different uses classification.
Transformer is divided into:
Power transformers (can be divided into step-up transformers, step-down transformers, distribution transformers, transformers, etc.);
special transformers (furnace transformers, rectifier transformers, welding transformers, etc.);
Instrument transformer (voltage transformers, current transformers), test with the high-voltage transformers and regulators.

2. according to different winding.
Transformers are divided into double winding, three winding, multi winding transformers and autotransformers .

3. according to different core structure.
4. Transformers are divided into core transformers and shell transformers.

4. according to the different number of phases
The transformer is divided into single-phase transformers, three-phase transformers, multi-phase transformers.

5.according to different cooling methods
Transformers are divided into dry-type transformers, oil-immersed self-cooled transformers, oil-air-cooled transformers, forced oil circulation transformers, forced circulation cooling transformers, inflatable transformers.

6.according to the coil structure is different.
Transformers are divided into single-coil transformers, double-coil transformers, three-coil transformers and multi-coil transformers.

7.according to different insulation center
Transformers are divided into full insulation transformers and semi-insulating transformers.

Although the transformers have different types and structures, their basic principle of operation is the same, and they all work according to the principle of electromagnetic induction of "electromotive electromagnetism" and " magnetomotive electromotive force."