Question

difference between dry type transformer and oil type transformer

Answer 1

Dry-type transformers are designed typically with 220 C insulation systems where aramid paper is the major insulation. ... This is possible as dry-type transformers do not require space for cooling radiators or transition coils. The no-load losses of liquid cooled transformers tend to be slightly lower than dry-types

Answer 2

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Differences between the core type and shell type transformer Are:-

• In core type core is surrounded by the winding while in shell type winding is surrounded by the core.
• In core type concentric cylindrical winding is used while in shell type Sandwiched winding is used.
• Core type is made by the L or I-U shape lamination while shell type is made by E-I or E-E type lamination