In the company Evernew Transformer you can order TM transformers oil-cooled units of different capacities at wholesale prices from the factory. We offer models with capacity from 16 kVA to 2500 kVA, with high voltages of 6 kV, 10 kV, 20 kV, 35 kV and low voltages of 0.4 kV, 0.69 kV. Customization for non-standard requirements is possible.

Evernew Transformer is a Chinese manufacturer with more than 30 years of experience, certified by GOST, CE, UL and other international standards. We offer reliable and quality transformers.

For more information or to place an order, please contact our specialists.

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Power transformers TM

What is a TM transformer?

TM transformer is a three-phase oil transformer with an expansion tank designed to convert electricity in high-voltage networks (6 kV, 10 kV, 20 kV, 35 kV) up to the consumption level. These transformers are used in open electrical installations in moderately cold climate conditions (UHL1) and provide reliable voltage reduction in supplying power grids for various industrial and commercial facilities.

TM transformers: Parameters and characteristics for industrial applications

Application of TM transformers

TM transformers are three-phase oil transformers with natural cooling, designed for operation in electrical networks with a frequency of 50 Hz. These transformers use two windings to convert electricity (voltage reduction or increase) in electrical networks and to supply consumers. TM transformers are ideal for operation in moderately cold climates.

Operating conditions of TM transformers

TM transformers are designed to operate in temperature ranges of +40°C to -45°C for moderately cold climates, and +40°C to -60°C for colder regions.

  • Installation height: not more than 1000 meters above sea level.
  • Environment: the equipment must not be operated in contaminated areas with conductive dust, corrosive or explosive gases, or in environments with high vapor concentrations that may adversely affect transformer performance.
  • Vibration and shock: TM transformers are not intended for use in locations subject to strong vibrations, shocks or impacts.

TM oil transformer design

The main elements of the TM transformer include active components, circuit breakers, oil tank, cover with high-voltage and low-voltage bushings, expansion tank with air dryer (built-in or separate) and thermal suction filter (for transformers with oil volume of 1000 kg or more). The magnetic system of the transformer is made of cold-rolled electrotechnical steel, and the high-voltage winding has a control bend in the last layer.

The high-voltage and low-voltage windings are designed as block coils. The active parts are rigidly fixed in the upper part of the tank and the switch is placed also in the upper part. The adjusting bends are connected to the contacts of the switch. The transformer tank is a welded metal structure, made in oval or rectangular shape, with lifting hooks at the top, an earthen bottom and an oil drain fitting. This fitting allows oil samples to be extracted without complete draining. The tank supports have holes for fixing to the foundation.

The tanks can withstand pressure drops up to 35 kPa. Control elements and connections are located on the tank lid. Oil resistant rubber products are used for sealing. Transformer windings are made of aluminum or copper, double insulated. Rated voltage: high - 6.10 kV ±2x2.5%, low - 0.4; 0.69; 3.15; 6.3; 10.5 kV.

The transformer complies with climatic conditions according to GOST 15150 U1 and UHL1. Cooling is natural, protection class - IP00. Service life - 30 years.

TM oil transformers for industrial and commercial power applications

Description of design and characteristics of TM transformers

In TM transformers, changes in the oil level in the tank are compensated through the expansion tank, which is connected to the environment. In order to clean and dry the air that enters the TM transformer during temperature changes, the expansion tank is equipped with an oil seal with air dryer. The oil level can be monitored by means of an oil indicator located on the side wall of the expansion tank. The tank is mounted on a special support in the upper part of the TM transformer housing.

Active components of TM transformers include the magnet core, HV and LV windings, top and bottom rods, HV and LV winding bends, and PTRL gears and teeth for HV windings, which are used to connect and control the TM transformer. The control level is switched only when the load is switched off. The magnetic core of TM transformers is made of cold-rolled anisotropic electrical steel. The StepLap magnet core assembly technology in TM transformers contributes to the reduction of no-load losses and the weight and dimensions of the TM transformer.

The windings of TM transformers consist of double-insulated aluminum wire. The interlayer insulation is made of high-strength electrical insulating paper. The upper and lower rods of TM transformers are made of specially designed profiles, which ensures high mechanical strength of the structure.

Transformer tank TM: The walls of the TM transformer tank are made of steel sheets with thickness from 2 to 6 mm (depending on the capacity), with stiffening ribs, which ensures high resistance to deformations during transportation and reliable operation of the TM transformer. The cover of the TM transformer tank has a thickness of 4 to 8 mm (depending on the capacity).

TM transformers Characteristics:

NameRxx,WRkz, WCurrent xx, %Ukz%Frequency, HzGross weight, kgLength, mmWidth,mmHeight, mm
TM-16906002,64,55035010154201255
TM-25906002,64,55035010154201255
TM-401258952,64,55039010204801270
TM-6317014202,54,55042011005501430
TM-10020017851,44,55054011107201430
TM-16035725351,44,55075011607301500
TM-25054032901,34,5501450123010101630
TM-40070547550,84,5501700151510101790
TM-63082065800,65502500161011601830
TM-1000119096500,55,5503650206012202250
TM-12501400113500,56504000195013002210
TM-16001750139000,56504400240014002450
TM-25002450198000,56,5504800250015002650

Oil for transformers TM

The quality of oil for TM transformers is one of the most important factors affecting the correct operation of the device. For TM transformers we use oil from the world's leading manufacturers, the quality of which is confirmed by appropriate certificates. In addition, our laboratory equipment performs strict control of the entire volume of oil for TM transformers, including checking for breakdown voltage, absence of water and gases.

About the company

The Evernew Transformer plant is a complete solution to the challenges of the energy industry. It has been in operation for over 30 years, covers an area of over 500 hectares and produces and supplies tens of thousands of different types of transformers each year, including TM transformers.

One of the key activities of the Evernew Transformer plant is the development and manufacture of TM transformer equipment. The high level of the plant's production is achieved through in-house development and the use of modern technology. Many years of experience of the plant's design office allows us to produce non-standard TM transformers, taking into account individual technical requirements of customers.

The Evernew Transformer production facility includes workshops for the manufacture of both high voltage and low voltage TM transformers. State-of-the-art metalworking equipment enables the production of high quality structural components. The installation of new machine park and impregnation chamber equipment significantly reduces the production times of TM transformers for our customers.

Reference image of the TM Transformer

Reference image of a TM transformer for industrial applications

Quality management

There are two stages of quality control at the Evernew Transformer factory. The first stage involves quality control of incoming materials and components. The second stage involves acceptance testing, which includes:

  • Measuring the winding resistance of TM transformers;
  • Transformer ratio measurement and winding connection group monitoring;
  • Short-circuit measurement;
  • Measurement of idling losses;
  • Dielectric strength of insulation;
  • Measurement of the breakdown voltage of transformer oil;
  • Noise measurement;
  • Measurement of short-circuit currents and their characteristics;
  • Overload resistance test;
  • Check winding temperature during continuous operation;
  • Checking the characteristics of the overvoltage protection;
  • Evaluation of transformer oil quality and composition;
  • Measurement of vibration levels in operating mode;
  • Evaluation of the strength of the structure against mechanical loads;
  • Monitoring of overpressure protection in the transformer.

All TM transformers manufactured at the Evernew Transformer factory are certified in accordance with the state standards of the Russian Federation, have passed mandatory pre-delivery diagnostics and have GOST certificates of conformity, as well as international CE and UL certification marks. The products are supplied to CIS countries, Europe, North America, South America, Asia and other regions.

Manufacturer's warranty

Warranty service includes free elimination of latent defects in production, replacement of defective components and assemblies during the warranty period, provided that the consumer complies with the conditions of transportation, storage, installation and operation specified in the technical documentation.