TMN

TMN stationary power oil-filled step-down three-phase double-winding general-purpose transformers with a nominal capacity from 1000 to 6300 kV∙A and voltage up to 35 kV with on-load tap changer (OLTC) are key equipment for power transmission and distribution in industrial and energy systems. These transformers are designed to reduce high voltage to levels suitable for use by various consumers. They are characterized by reliability, efficiency, and the ability to operate under various conditions. TMN transformers ensure stable and high-quality power supply, making them indispensable in many industries.

Design Features

TMN transformers have a carefully designed structure that ensures their reliability and efficiency. Key components and design features include:

• Tank with radiators for efficient cooling, lifting hooks, taps/plugs for maintenance, and a grounding bolt.
• Active part with a magnetic core made of electrical steel, windings, and an on-load voltage regulation device (OLTC).
• OLTC device for voltage regulation, with the possibility of equipping with devices from various manufacturers, connected to the higher voltage windings.
• HV and LV bushings for outdoor installation, removable, with porcelain insulators.
• Oil conservator to ensure the presence of oil under various operating conditions, consisting of two compartments.
• Oil level indicators for monitoring the oil level of the OLTC device and the transformer.
• Air dehumidifier to protect the oil from external air.
• Protection and monitoring system with a thermometric alarm, thermometer, gas relay, and pressure relief valve.
• Rollers for convenient movement of the transformer.

Advantages of Using TMN Transformers

TMN transformers have a number of important advantages that make them an optimal choice for many applications. These advantages ensure efficiency, reliability, and cost-effectiveness of operation:

• On-load tap changer (OLTC): Provides the ability to regulate voltage without disconnecting the transformer from the network, which increases the stability of power supply and ease of operation.
• High reliability: The design and materials of TMN transformers ensure their durability and resistance to various operating conditions.
• Efficiency: The use of modern technologies and materials, such as high-quality electrical steel for the magnetic core, allows minimizing energy losses.
• Versatility: TMN transformers are suitable for indoor and outdoor installation and can be adapted to various climatic conditions.
• Ease of maintenance: The transformer design provides convenient access to key components for maintenance and control.

These advantages make TMN transformers a beneficial solution for ensuring reliable and efficient power supply.

Areas of Application

TMN transformers are widely used in various sectors of industry and energy. Their reliability, efficiency, and ability to operate in various conditions make them indispensable for:

• Energy sector: Power transmission and distribution substations, ensuring voltage reduction for subsequent distribution to consumers.
• Industry: Providing power supply to industrial enterprises, plants, factories, where stable and high-quality power supply is required for equipment operation and production processes.
• Infrastructure: Power supply to residential complexes, public buildings, transport systems, ensuring the reliable operation of all life support systems.
• Agriculture: Providing electricity to agricultural facilities such as farms, greenhouses, irrigation systems.

TMN transformers play a key role in ensuring reliable and efficient power supply in various sectors of the economy.

Compliance with Standards

TMN transformers are manufactured in compliance with high quality and safety standards, which confirms their reliability and compliance with modern requirements. The main standards that TMN transformers comply with are:

• IEC 60076: International standard defining general requirements for power transformers.
• ГОСТ Р 52719-2007: Russian national standard establishing general technical specifications for power transformers.
• ТУ У 31.1-00213440-024-2006: Technical specifications of Ukraine, developed for this type of transformer.
• ГОСТ 11677-89: Standard defining permissible deviations of technical parameters of transformers.
• ГОСТ 11920-85: Standard regulating general technical specifications for large power transformers.
• ГОСТ 15150-69: Standard defining the climatic version and placement category of transformers.
• ISO 9001:2008: Standard confirming the certification of production by the quality management system.

Compliance with these standards guarantees high quality, reliability, and safe operation of TMN transformers.

For accurate technical information or to order TMN transformer, contact the manager of Ukrelektroaparat LLC or mail to zakaz@uea.km.ua