What does an auto transformer do?
The primary purpose of an autotransformer is to regulate the voltage of transmission lines and can be used to transform voltages. With only one winding, an autotransformer adjusts the voltage automatically according to load.
Which transformer is used in substation?
Substation transformers are most often offered with one of 3 different fluids: Mineral oil or silicone transformer oil. Primary voltages of a substation transformer usually ranges from 2.4 kV to 69 kV in 225 through 20,000 kVA sizes, but 600 volt through 35 kV secondary voltage ratings are also available.
What does a substation transformer do?
Substation Transformers The transformer is the heart of the substation. The transformer changes the relationship between the incoming voltage and current and the outgoing voltage and current. Substation transformers are rated by their primary and secondary voltage relationship and their power carrying capability.
What is auto transformer and where it is used?
An autotransformer is a type of transformer where primary and secondary windings share the same common single winding. So basically it’s a single winding transformer. Auto-transformer is used in the transmission and distribution systems when the transformation ratio for voltage is small.
Where are auto transformers used?
power applications
Autotransformers are frequently used in power applications to interconnect systems operating at different voltage classes, for example 132 kV to 66 kV for transmission. Another application in industry is to adapt machinery built (for example) for 480 V supplies to operate on a 600 V supply.
What is the difference between a substation and a transformer?
is that substation is a site where electricity supplied by long-distance (high-voltage) transmission lines is transformed and/or regulated for local (low-voltage) distribution while transformer is something that transforms, changing its own or another thing’s shape.
What is the other name of auto transformer?
The output voltage adjustment can be manual or automatic. The manual type is applicable only for relatively low voltage and is known as a variable AC transformer (often referred to by the trademark name Variac).