Transformers
TRANSFORMER TYPES
TRANSFORMER TYPES
Transformers can be constructed so that they are designed to perform a specific
function. A basic understanding of the various types of transformers is necessary
to understand the role transformers play in today’s nuclear facilities.
EO 1.4
STATE the applications of each of the following types of
transformers:
a.
Distribution
b.
Power
c.
Control
d.
Auto
e.
Isolation
f.
Instrument potential
g.
Instrument current
Types of Transformers
Transformers are constructed so that their characteristics match the application for which they
are intended. The differences in construction may involve the size of the windings or the
relationship between the primary and secondary windings. Transformer types are also designated
by the function the transformer serves in a circuit, such as an isolation transformer.
Distribution Transformer
Distribution transformers are generally used in electrical power distribution and transmission
systems. This class of transformer has the highest power, or volt-ampere ratings, and the highest
continuous voltage rating. The power rating is normally determined by the type of cooling
methods the transformer may use. Some commonly-used methods of cooling are by using oil
or some other heat-conducting material. Ampere rating is increased in a distribution transformer
by increasing the size of the primary and secondary windings; voltage ratings are increased by
increasing the voltage rating of the insulation used in making the transformer.
Power Transformer
Power transformers are used in electronic circuits and come in many different types and
applications. Electronics or power transformers are sometimes considered to be those with
ratings of 300 volt-amperes and below. These transformers normally provide power to the power
supply of an electronic device, such as in power amplifiers in audio receivers.
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