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Power Transformers

Specializing in reliable solutions with maximum efficiency and availability. Siemens Transformers support grid operators in giving their customers state-of-the-art equipment and energy that is safe and affordable.

Tailored to meet specific customer needs – Daily savings with efficient transformers – Investment pay-offs – Eco-friendly

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Portfolio

 

Reliable, long-lifecycle solutions built to customer

requirements

 

For more than a century, power suppliers and industrial companies have relied on Siemens for its reliable and efficient power transformers. Almost all of them, ranging from power ratings from 20 MVA to units well above 1,000 MVA,and 20 kV to 1,100 kV are tailor-made.

Siemens offers a complete chain of services – from consulting to design, from manufacture and transport to commissioning and Transformer Lifecycle Management. As one of the leading transformer manufacturers worldwide, Siemens Transformers offers a tight and responsive competence and service network in more than 190 countries in the world.

 

Daily savings

Siemens Transformers’ services and products ensure daily savings for customers: There are the savings in capital expenditure for regional manufacturing plant setup and for acquiring the broad experience and in-depth knowledge required for creating custom unit designs. The benefits of minimized failure rate and losses, low-noise transformers, units with DC compensation, and monitoring systems for preventive maintenance, on the other hand, translate into savings in operational expenditure.

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Power generation

Generator step-up transformers and grid access transformers are the critical link between the power station and the transmission network. They increase the voltage from generator level to the transmission voltage level (HV). Often operated day and night at full load, they offer the highest level of reliability.

 

Unit ratings: up to 1,300 MVA (3 phases) and 700 MVA (1 phase)
System voltages: up to 1,100 kV

Unit auxiliary transformer

Unit auxiliary transformers provide the auxiliary power supply for an entire power plant. They lower the voltage from generator level to the voltage level of the internal plant. Siemens delivers unit auxiliary transformers as packages with low clarification efforts for the customer.

 

Ratings: up to 40 MVA, mostly with off-circuit tap changer (NLTC

System-interconnecting transformer in high-voltage substations

This type of transformers connect AC transmission systems with differing voltages. They enable the exchange of active as well as reactive power between the systems. They must be able to withstand electrical stress from fault currents and transients.

 

Unit ratings: up to 1,300 MVA (3 phases) 

System voltages: up to 1,100 kV

Plant-feeding transformers for industrial applications

These transformers connect AC transmission systems with differing voltages. They enable the exchange of active as well as reactive power between the systems. They must be able to withstand electrical stress from fault currents and transients.

 

Unit ratings: up to 1,300 MVA (3 phases) 

System voltages: up to 1,100 kV

Technology

Precision engineering enhanced by a modular feature

architecture

Precision, utmost attention to detail and exacting standards in manufacturing ensure the high efficiency, long lifecycles, and low failure rates of Siemens power transformers.

Siemens’ experience with custom-built units has led to a highly sophisticated design process that offers flexibility within a certain standardization frame while giving customers an economically efficient customization solution.

Siemens enhanced customization process offers additional advantages: Its highly-evolved modular architecture keeps manufacturing and maintenance efficient and cost saving.