what is power Transformer and Distribution transformer | Halfboil Engineers | Tamil 1D3K

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Power Transformer Definition
A power transformer is a static machine used for transforming power from one circuit to another without changing the frequency. As there is no rotating or moving parts, a transformer is classified as a static device. Transformer operates on an AC supply. Transformers operate based on the principle of mutual induction.
Use of Power Transformers
Generation of electrical power in low voltage level is very much cost effective. Theoretically, this low voltage level power can be transmitted to the receiving end. This low voltage power if transmitted results in greater line current which indeed causes more line losses.
But if the voltage level of a power is increased, the current of the power is reduced which causes reduction in ohmic or I2R losses in the system, reduction in cross-sectional area of the conductor i.e. reduction in capital cost of the system and it also improves the voltage regulation of the system. Because of these, low level power must be stepped up for efficient electrical power transmission.
This is done by step up transformer at the sending side of the power system network. As this high voltage power may not be distributed to the consumers directly, this must be stepped down to the desired level at the receiving end with the help of step down transformer. Electrical power transformer thus plays a vital role in power transmission.
Two winding transformers are generally used where ratio of high voltage and low voltage is greater than 2. It is cost effective to use auto transformer where the ratio between high voltage and low voltage is less than 2.
Distribution transformers normally have ratings less than 200 kVA,although some national standards can allow for units up to 5000 kVA to be described as distribution transformers. Since distribution transformers are energized for 24 hours a day (even when they don't carry any load), reducing iron losses has an important role in their design. As they usually don't operate at full load, they are designed to have maximum efficiency at lower loads. To have a better efficiency, voltage regulation in these transformers should be kept to a minimum. Hence they are designed to have small leakage reactance.
What is a Distribution Transformer : Construction and Its Types
At present, discovering a convenient as well as a suitable area for installing a distribution transformer is one of the main challenges faced by the distribution company. Especially in urban areas, it is severe so power departments need to plan for an appropriate place for installation by considering the load, load center, possibility & further development, etc. This type of transformer can be arranged on a single pole or H pole based on the size, weight, and requirements of the transformer. Accordingly, the choice for installation of this transformer can be done by the distribution company depending on the capability and availability of space.
What is a Distribution Transformer?
Definition: A distribution transformer is also known as a typical kind of isolation transformer. The main function of this transformer is to alter the high voltage to the normal voltage like 240/120 V to use in electric power distribution. In the distribution system, there are different kinds of transformers available like single phase, 3-phase, underground, pad-mounted, pole-mounted transformer.
Generally, these transformers are available in different sizes with efficiencies along with insulating oil. These transformers are available in various sizes and efficiencies. The selection of this transformer mainly lies in the requirement and budget of the user. There are four types of distribution transformer connections available like star-star, delta-delta, star-delta, delta-star and Zig Zag/delta zigzag.

[@dilburt2]

such a good video. thank you!

[@helengoh7176]

Great job

[@dilburt2]

can you do a video on turbine generators?