Three Phase Dry Type Transformer 30–2500 kVA | 6–11 kV, Cast ResinThree Phase Dry Type...

Dry Type Transformer

A dry-type transformer is a commonly used power equipment. It adopts resin-cast coils and an oil-free dry-type structure, has excellent insulation and short-circuit resistance performance, supports natural air cooling / forced air cooling, operates safely, requires low maintenance workload, and is suitable for key power distribution scenarios requiring long-term continuous operation.

Selection Points of Dry-Type Transformers

Voltage Level Matching

Common voltage levels of dry-type transformers include 10 kV, 35 kV, etc. Customers can choose according to actual power demand. For example, the 10 kV level is suitable for small and medium-sized factories, commercial complexes and other scenarios, while the 35 kV level is mostly used in large substations or high-voltage distribution systems.

Temperature Rise Limit Requirements

The temperature rise limit of dry-type transformers is a key indicator, taking GB/T 1094.11 as an example. The winding temperature rise limit is 100 K for Class F (155°C) insulation and 125 K for Class H (180°C) insulation. Customers should select the appropriate insulation class according to the operating ambient temperature.

Protection Level Selection

When dry-type transformers are installed indoors, a protection level of IP20 can basically meet the requirements. If installed in a humid or dusty environment, it is recommended to choose a protective enclosure of IP23 or higher to prevent dust and dripping water from entering.

Structural Features

The main structural features of CHBEB three-phase dry-type transformers are as follows:

• Core: CHBEB dry-type transformers are made of new high-quality silicon steel sheets stacked together, featuring high magnetic permeability and low hysteresis loss. At the same time, the shape and structure of the core are optimized to reduce magnetic resistance and eddy current loss, improving transformer efficiency.
• Winding: The winding is very important to the transformer and can be wound with copper wire or aluminum wire. It is then sealed and protected by materials such as cast epoxy resin or sprayed epoxy powder.
• Cooling system: Different from oil-immersed transformers, dry-type transformers usually use natural cooling or forced air cooling for heat dissipation.
• Protection level: Dry-type transformers use different protection levels according to different installation environments. Our company usually provides customers with an IP20 enclosure, which prevents solid foreign objects with a diameter greater than 12.5 mm from entering and is intended for indoor installation. Higher protection levels such as IP23 are available on request.
• Noise level: The noise level of dry-type transformers is usually low, typically between 50 and 70 decibels depending on capacity.

Common Application Scenarios of Dry-Type Transformers

Industrial Production Field

In manufacturing, dry-type transformers are commonly used in factory distribution systems because of their significant advantages of low noise and low loss, providing stable power for production lines, machine tools and other equipment. For example, enterprises such as precision instruments in electronics factories and automobile production lines have high requirements for voltage stability, while dry-type transformers also have the advantages of low noise and low loss.

Commercial Building Distribution

In commercial buildings such as shopping malls and office buildings, dry-type transformers can serve as distribution centers to supply power to lighting, air conditioning, elevators and other equipment. Their compact size and flexible installation make them suitable for installation in floor distribution rooms or basements, reducing space occupation.

New Energy Supporting Facilities

In new energy projects such as photovoltaic and wind power stations, dry-type transformers can step up the low-voltage electricity from the power generation side to the voltage required for grid connection, achieving efficient transmission of clean energy.

Technical Parameters

Supply and Supporting Services

CHBEB, as a professional transformer manufacturer, can provide standard models or customized special specifications according to project requirements. In some regions, on-site survey, installation guidance, and commissioning services can be provided to ensure stable operation after the equipment is put into service.

During the procurement process, users should pay attention to the product certificate of conformity, type test report, and after-sales guarantee content. Delivery cycle and transportation method should also be confirmed in advance to avoid affecting project progress.

Dry-type transformers, in their supply and use in various countries and regions, meet the actual needs of local power construction and development. Their characteristics of safety, reliability, and simple maintenance make them a suitable choice for many distribution applications. During selection, installation, and use, users can fully exert their performance based on their own conditions and technical requirements, providing support for the stable operation of the power system.

Contact Us

Looking for a reliable dry-type transformer for your project? CHBEB offers a full range of three-phase cast resin dry-type transformers from 30 kVA to 2500 kVA, with standard models and customized solutions available. Browse our CHBEB dry type transformers or contact our team today with your voltage, capacity and installation requirements to get a fast quote and professional technical support.