TYPES OF POWER TRANSFORMER
There are 15 types of impotent transformers in the market they are
1) Laminated core transformer
2) Toroidal transformer3) Auto transformer4) Variable auto transformer5) Induction regulator transformer6) Poly phase transformer
7) Grounding transformer8) Phase-shifting transformer9) Variable-frequency transformer10) Leakage or stray field transformers11) Resonant transformer12) Ferrite core transformer13) Oil cooled transformer14) Cast resin transformer15) Isolating transformer
2) Toroidal transformer3) Auto transformer4) Variable auto transformer5) Induction regulator transformer6) Poly phase transformer
7) Grounding transformer8) Phase-shifting transformer9) Variable-frequency transformer10) Leakage or stray field transformers11) Resonant transformer12) Ferrite core transformer13) Oil cooled transformer14) Cast resin transformer15) Isolating transformer
Laminated core transformer
Laminated core transformer
This is the most common type of transformer, widely used in
electric power transmission and appliances to convert mains voltage to low
voltage to power electronic devices. They are available in power ratings
ranging from MW to MW. The insulated lamination minimizes eddy
current losses in the iron core.
Small appliance and electronic transformers may use a split
bobbin, giving a high level of insulation between the winding. The rectangular
cores are made up of stamping, often in E-I shape pairs, but other shapes are
sometimes used. Shields between primary and secondary may be fitted to reduce
EMI (electromagnetic interference), or a screen winding is occasionally used.
Small appliance and electronics transformers may have a thermal
cut-out built into the winding, to shut-off power at high
temperatures to prevent further overheating.