Booster transformer for electric railways
Booster transformers are used in electric railway catenary feeders to collect the return current from the rail to the return conductor. Booster transformers are single-phase transformers with the ratio 1:1. They have low impedance values, and in spite of that they must tolerate the stresses of short-circuit currents, which are frequent in electric railways.

Distribution Transformers
Distribution Transformers are generally used in electrical power distribution and transmission power. This class of transformer has the highest power, or volt-ampere ratings. and the highest continuous voltage rating.
Distribution Transformers convert high-voltage electricity to lower voltage levels acceptable for use in homes and business.
Electrical energy is passed through distribution transformers to reduce high-distribution voltage levels down to end-use levels. Nearly all energy passes through at least one distribution transformer before being consumed by an end-use appliance, motor, or other piece of equipment. Transformers are found in all sectors of the economy: residential, commercial, and industrial.

Furnace transformers
Transformers of this type are used in the steel melting and metallurgical industry. They are characterized by high secondary current and a wide secondary voltage range. The secondary voltage is normally regulated by an on-load tap changer or in an intermediate circuit of a two-cored design within the transformer tank.

Ground/Pad-mount Transformers
Due to safety or environmental reasons it may not be desirable to use overhead lines and pole mount transformers. Severe weather conditions may pose a high risk to the overhead lines or for sites close to schools safety considerations may make the use of overhead lines unsafe.
The ground/pad-mount consists of a transformer located inside a robust hot dip galvanized enclosure which also contains the LV and MV equipment.

Marine Distribution
Transformers designed to distribute the power inside a ship.
Demanding installation requirements include reduced noise and vibration levels, limited space, special cooling system (water cooled), and a high degree of security to avoid human risks.
Transformers for marine distribution application are designed and manufactured approved by Lloyd´s shipping register, Bureau Veritas, DNV, RINA, ABS, etc.

Marine Propulsion
Today the most modern cruisers and general vessels are using electrical propulsion systems and not the old diesel propulsion systems. These new electrical propulsion systems require special transformers adapted to technical requirements including reduced noise, vibration levels, limited space, special cooling system (Water cooled), and high degree of security to avoid human risks.
Transformers for marine propulsion application are designed and manufactured approved by Lloyd´s shipping register, Bureau Veritas, DNV, RINA, ABS, etc.

Network Transformers
Network Transformers provide the dependability, ruggedness, and space-saving economy needed for secondary network distribution systems. Network Transformers are designed for frequent or continuous submerged operation.

Railway Transformers
Transformers mounted on trains to feed the traction system.
Transformers for fixed installations include: autotransformers, rectifier transformers, feeder transformers and booster transformers.

Rectifier Transformers
Various rectifier and transformer connections are utilized for the various applications. For DC voltages in the lower range, the inter-phase connection is often preferred, while for the higher voltages and for the large processes, like aluminum, the bridge connection is more economical.
Rectifier transformers in electrolysis operation have normally a steady, but continuously high loading. The high secondary currents and LV bushing arrangements for large units, together with the secondary current harmonics in general, are essential design requirements to manage.

Phase-shifting transformers
Phase-shifting transformers help control the real power flow in transmission lines and systems interties
Existing transmission systems are often operated and stressed to the limit of their performance capability of their original design in order to maximize asset utilization. To ensure that under these conditions the economical, reliable and secure operation of the grid is maintained, the need for various aspects of power flow management within the power systems is becoming evident. Phase-shifting transformers help control the real power flow in transmission lines and systems interties. They allow for better utilization of existing networks concerning load growths.

Substation Auto
Substation autotransformers transfer the incoming high voltage to the next lower voltage level.
Autotransformers are built in core form with auto-connected windings , ie common main winding and a separate low voltage winding.

Substation Non-Auto
Customers specify non-auto transformers for network applications when separate grounding systems between the high voltage and low voltage is required.
Substation non-autotransformers, like the autotransformers, transfer the incoming high voltage to the next voltage level.
Non-autotransformers are built in core form with windings facing fullpower, that is, HV windings and LV windings are galvanically separated.

Substation Transformers
Substation Transformers are large devices. Although they are typically efficient in the transforming of electricity from one voltage to another, processing hundreds of Mega Volts-Amps of electricity force the liberation of hundreds of BTUs per second.
A substation is a high-voltage electric facility. It is used to switch generators, equipment and circuits or lines in and out of system.
A Substation is also used to change AC voltages from one level to another, or change alternating current to direct current or direct current to alternating current. There are small substations and large one. The small substation are little more than a transformer and relate switches, while the large one has several transformers an dozens of switches and equipment.


There are generally four types of substation,
but some substations there are a combination of two or more types:

Substations Types
· Step-Up Transmission Substations
· Step-Down Transmission Substation
· Distribution Substation
· Underground Distribution Substation

Step-Up Transmission Substation
A step-up transmission substation receives electric power from a nearby generating facility and uses a large power transformer to increase the voltage for transmission to distant locations. A transmission bus is used to distribute electric power to one or more transmission lines.

Step-Down Transmission Substation
Step-down transmission substations are located at switching points in an electrical grid. They connect different parts of a grid and are a source for sub-transmission lines or distribution lines. The step-down substation can change the transmission voltage to a sub-transmission voltage. The sub-transmission voltage lines can then serve as a source to distribution substations. Sometimes, power is tapped from the sub-transmission line for use in an industrial facility along the way. Otherwise, the power goes to a distribution substation.

Distribution Substations
Distribution substations are located near to the end users. Distribution substation transformers changes voltage to lower levels for use by the end users.

Underground Distribution Substation
Underground distribution substations are also located near to the end-users. Distribution substation change the sub-transmission voltage to lower levels for use by end-users.

Variable Speed Drive
Isolation transformers provide the voltage transformation as well as electric isolation that is necessary for motor drives applications. Converter drives are normally fed by medium voltage networks so the VSD transformer transforms the medium network voltage to the converter supply voltage.
These special transformers supply the required energy to a large range of drives, frequency converters and rectifiers to provide complete solutions for pumps, fans, compressors, conveyors, drilling packages, mills, thrusters, gas turbines, generators, mixers, etc.

Windmill
Design is particularly compact to meet with the limited space available and it has to take care of other particular condition: presence of harmonic content, transitient phenomenons, high number of switching operations, extreme vibration requirements, etc.
Transformers for windmill application are custom designed and adapted to the different turbine requirements and country regulations maintaining the highest degree of safety, efficiency and eco-friendly design. They be installed inside the Nacelle or inside the tower according to the wind turbine manufacturers design requirements.