TRANSFORMERS

TRANSFORMER.

Definition: Transformer is an Electrical device without continuously moving part in its design, which by electromagnetic, induction transform electric energy from one or more circuits to one or more other circuit at the same frequency, usually with a change in voltage and current.

Classes of Transformers

•         Transformers may be classified into 5 general  

    Categories:

1      Voltage Transformation Transformers;

2      Voltage Regulation Transformers;

3      Current Regulation Transformers;

4      Metering & Protection Transformers;

5      Accessory Transformers.

(1) Voltage Transformation Transformers

          i Power Transformers

          ii Distribution Transformers

         

(2) Voltage Regulation Transformers

      i Regulating Transformers

      iii Step Voltage Transformers

       iv Induction Regulator Transformers

       v Phase Shifter Transformers

   (3) Current Regulation Transformers   

        i     Constant Current Transformers     

               for  Arc-Welding Machines

(4) Metering & Protection Transformers

      I  Instrument Transformers

                  [a] Voltage (Potential) Transformers

                  [b] Current Transformers

     II  Grounding Transformers

                  [a] Power Grounding Transformers

                  [b] Relay Grounding Transformers

   (5) Accessory Transformers   

        Special Transformers for Accessories like 

         Door Bells, Telephone Transducers,

        Toys, Gaming Machines