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Combining cutting-edge technology with decades of experience

Distribution transformers can be both the last step in the conversion chain that bring electrical energy to the consumer as well as the first transformation step to feed non-centrally-generated power into the power grid. Siemens brings over 120 years of experience in transformer technology to its LiDT product line.

Liquid-immersed distributions transformers withstand high electrical stress from external overloads and high mechanical stress from short-circuits.

Improving quality of service and increasing utility revenues

For over a half century Siemens has led voltage regulator technology, continuously refining and improving its range of reliable, sturdy and innovative liquid-immersed distribution transformers.


LiDTs differ from dry-type distribution transformers in more ways than their names implies. Dry-type units are more limited in size and voltage, use air forced cooling and are often installed indoors, closer to the load. LiDTs allow for higher MVA ratings and voltages. They use oil as the coolant and are generally installed outdoors for safety reasons. LiDTs are custom-built to deliver optimized performance for a very specific consumer application.

Areas of application

Performance you can rely on – anytime and anywhere

Siemens distribution transformers demonstrate high systematic quality: EN ISO 9001, harmonized design, environmental protection from production to finished transformer, daily savings with efficient transformers.


Customers worldwide trust in Siemens tried-and-tested quality – and with good reason. Siemens distribution transformers are among the most reliable in the world.    




Whether pole-mounted, installed in buildings, in residential areas, in solar or wind power stations, or in industry, distribution transformers are always located in the immediate vicinity of people. This means they must operate safely, reliably, efficiently, and quietly. Siemens offers a range of features and materials to ensure the environmental performance of their distribution transformers.