What is a Shell Type Transformer?

What is a  Shell Type Transformer?

Shell Type Transformer Definition

A shell type transformer is defined as a transformer with a magnetic core using ‘E’ and ‘L’ shaped laminations.

Core Structure

The core has three limbs, with the central limb carrying all the flux and side limbs half the flux, enhancing strength and protection.

Winding Design

HV and LV windings are alternately wound around the core, needing less conductor but more insulation.

Cooling System

Requires forced air and/or oil cooling to dissipate heat effectively from the windings.

Advantage

• Low cost

• High output

Disadvantage

• Manufacturing is complicated

• Labor costs are high

Applications

Shell type transformers are used for low voltage applications and help optimize circuit expenditure.