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The difference between power transformers


What is the difference between a power transformer and a distribution transformer? The differences are due to factors such as the type of network used, installation location, use of low or high voltage, various ratings of power and distribution transformers available on the market, etc.

At the same time, design efficiency and core design, the types of losses that occur in transformers, their operating conditions and various applications are also important parameters.

Power transformer

Power transformers are installed in various power stations to generate and transmit electricity. It acts as a boost or buck transformer, increasing and decreasing voltage levels as needed, and also serves as an interconnect between two power stations.

Distribution transformer

Distribution transformers are used to reduce or reduce the voltage and current levels of a transmission line to a predetermined level, which in domestic and industrial uses is known as a safe level for end-user consumers.

The main difference between power transformers and distribution transformers

Power transformers are used for higher voltage transmission networks, while distribution transformers are used for lower voltage distribution networks.

Power transformers on the market are 400 kV, 200 kV, 110 kV, 66 kV, 33 kV and other ratings, distribution transformers are 11 kV, 6.6 kV, 3.3 kV, 440 V, 230 volts.

Power transformers always operate at rated full load because load fluctuations are very small, but distribution transformers operate at loads below full load because the load changes are very large.

The maximum Efficiency of a power transformer is designed to be 100%, and the efficiency is simply calculated by the ratio of the output power to the input power, while the maximum efficiency of a distribution transformer varies between 50-70% and is calculated by All Day Efficiency.

Power transformers are used in power stations and transmission stations, and distribution transformers are installed in distribution stations, from where they distribute electricity to industry and households.

Compared with distribution transformers, power transformers are larger in size.

In a power transformer, iron loss and copper loss occur throughout the day, while in a distribution transformer, iron loss occurs in 24 hours, that is, all day, and copper loss depends on the load period.

In this way, the power transformer is distinguished from the distribution transformer.

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