Cast Resin Transformer

  • Description
  • Product Line
  • Main Features
  • Accessories

The cast resin transformer portfolio ranges from 100 kVA to 20 MVA and up to 52 kV.

The transformers meet and exceed the eco design regulations according to EU 548/2014 can be used for different applications like power distribution, converter applications for industry or solar / wind power plants as well as for traction purpose.

Basic

This transformer, with a maximum rated power of 2500 kVA, has its strength point in its lighter weight, if compared to the advanced model, of the same characteristics. Thanks to these features, it represents the best compromise where restriction or, limitation of weight and dimensions are required.

Advanced

Developed thanks to 35 years of Tesar experience in the field of transformers. It is able to be installed in every site and location without any limitation. The transformer can be customized to the client specific requirements.

Ecodesign

The transformer is fulfilling the Ecodesign directive of EU and the EN 50588-1. The transformer allows a reduction in energy consumption and as a consequence a reduction in greenhouse emissions. This is our Top Model.

Customized

Tesar put its know-how and experience at the service of the customer, aiming to satisfy the most peculiar project requirements. Our transformers can be equipped with a wide range of accessories and adapted to the specific conditions of the installation site, such as customized terminal configuration for bus-duct coupling. Enclosure with different protection degrees and configurations are available on request to provide all the protection that the installation site may require.

Low operation costs

The low losses in the magnetic core and in the windings, reduce the costs of operation.

Frames

Hot deep galvanized frames assure the best performance in a polluted environment.

High reliability

The high technology employed in the manufacturing process of windings gives the product a high level of reliability.

Maximum safety

The resin and insulating materials employed in the design and construction of Tesar transformers guarantee a high level of self-extinguishing characteristics and low emission of toxic gases.

No need for maintenance

Tesar cast resin transformers are designed in such a way as to withstand the worst climatic and environmental conditions. Preventive maintenance consists of a simple visual check.

TSX1 Temperature Control Device

TSX1 Temperature Control Device

Electronic unit for temperature control of cast resin transformers.

  • Nos. 4 analog input channels for windings and magnetic core temperature monitoring
  • Nos. 4 output relays (Fans, Alarm, Trip and Generic Alarm)

Temperature is monitored through PT100 Ω. TSX1 temperature thresholds are fully adjustable. TSX1 is also available with RS485 serial port - RTU MODBUS protocol (TSX1s).

TSX1 Temperature Control Device

TSX3 Temperature Control Device

Electronic unit for temperature control of cast resin transformers.

  • Nos. 4 analog input channels for windings and magnetic core temperature monitoring
  • Nos. 4 output relays (Fans, Alarm, Trip and Generic Alarm)

Temperature is monitored through PTC.

TSX6c Fan Protection Device

TSX6c Fan Protection Device

Electronic unit for protection and control of ventilation system.

  • Nos. 2 digital inputs for ventilation system enabling
  • Nos. 2 output signals for fans malfunctioning
  • Nos. 6 power supplies equipped with magnetic-thermal relay

Through the TSX6c relay, ventilation fans are constantly monitored and protected.

PT 100 Ω and PTC sensors

PT 100 Ω and PTC sensors

Provides real-time temperature monitoring. One PT 100 Ω sensor is installed in each LV winding. An additional PT 100 Ω sensor can be installed to monitor magnetic core temperature. Temperature sensors are wired to an auxiliary box in- stalled on transformer metal frame. Two PTC‘s are installed on each LV winding, signaling when specific alarm and trip temperature thresholds are reached. Temperature sensors are wired to an auxiliary box installed on the transformer metal frame.

Antivibration pads

Antivibration pads

Anti-vibration pads are a smart and compact solution, reducing vibration and the noise level of a transformer. They prevent transformer vibrations from being transmitted to the surrounding environment.

Ventilation Bars

Ventilation Bars

The air forced fan cooling system, reduces transformer operating temperature and allows for temporary or continuous rated transformer power increase. The ventilation system, comprised of two fans bars each with three motors, can increase transformer rated power by up to 140%.

MV surge arresters

MV surge arresters

The primary protection against atmospheric and switching over voltages. A convenient and reliable solution to extend transformer lifetime. Highly recommended for installation where high lightning strike activity is foreseen.

Metal Enclosures

Metal Enclosures

Provides protection against solid objects and liquids and prevents personnel from entering into direct contact with live parts. Fully custom designed and made to any kind of installation.

a company of RS Group