A power distribution transformer is also popularly known as an isolation transformer. It changes high voltage to low voltage applied in electric energy distribution. Thus, it provides the final voltage transformation in the electric power distribution system. In general, the level of a distribution transformer is less than 200 MVA. Needless to say, some national standards allow for ratings up to 5000 MVA to be in the category of distribution transformers.
Construction of Distribution Transformer
The power distribution transformer is designed like a small-size transformer. It has different parts, such as an oil tank to soak the windings by placing in it, a conservator within the tank to maintain the temperature of oil, Buchholz relay to indicate errors like loss of oil once it goes low, improper flow of oil, breather unit to change its color, an indicator to show the level of oil within the conservatory unit. The transformer also has a temperature detector to monitor the temperature of the oil, a pressure relief device to decrease the pressure and avoid any explosion, a thermal relay as an indicator, a radiator to increase the transformer’s cooling efficiency, and a bushing to connect the internal windings of the transformer.
Type of Power Transformers
There are different types of distribution transformers. The most common are:
● Single Phase Transformer:
Power transformers are used when there is no requirement for a three-phase source. It repairs overhead distribution powers in residential sectors and is applicable in light commercial loads, power applications, and industrial lighting.
● Three Phase Transformer:
These transformers keep electrical energy from the main distribution circuit to a monitor distribution circuit. They share the current to a secondary distribution circuit and also decrease the voltage of the primary component based on the consumer requirement. The best part is that it can function at different voltage and frequency levels based on the standards existing in different countries. Available in single-phase and three-phase, these transformers are ideal for commercial, residential, and light industrial sectors where voltage is always variable.
● Pad-mounted Transformer:
These power transformers come with a locked steel cabinet. They are used in the power distribution line on the overhead power line for the purpose of reducing the primary voltage supplied to the customer. Pad-Mounted Transformers can be used in domestic and commercial areas. The capacity can be 75 kVA to 5000 kVA.
Uses of Power Transformers
Maroplast is one of the Leading Distribution Transformers Manufacturers in India. Power Distribution Transformers Distribution Transformers are important as they change the voltage from high to low. They are perfect for home or office use to protect appliances from voltage fluctuation. They distribute electricity to remote areas.
