Question

.The distribution transformer is generally connected in a) Delta/star b) Delta/Delta c) Star/Star d) Star/Delta.

Answer 1

Explanation:

A distribution transformer usually is a *

a) Star-delta transformer

b) Delta-star transformer

c) Star-star transformer

d) Delta-delta transformer

Answer 2

The distribution transformer connections are generally found in industrial applications such as delta-delta, stat-delta, delta-star, and stat-star.

The distribution transformer is a type of transformer which is used to change high voltage current to standard voltage i.e 220/110V.

The transformer has two types of windings in a coil known as primary coil and secondary coil. Both of the coils are connected with the laminated iron core.  

If the number of primary turnings in a transformer is N₁ and the number of secondary turnings is N₂ and their voltages are V₁ and V₂ respectively, then the equation is,

                               $\frac{N_{1} }{N_{2} } =\frac{V1} {V_{2}}$

Forms of distribution transformers are:

• Single-phase transformer
• Three-phase transformer
• Underground transformer
• Pad-mounted transformer
• Pole-mounted transformer

This transformer is used to supply electricity from sub-electric stations to the consumers.

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