Product Introduction：

This premium-grade transformer is designed to provide optimal power distribution performance while consuming the least amount of energy possible, making it an ideal choice for businesses looking to minimize their carbon footprint and long-term operating costs. The SC(B)14 premium efficiency dry-type transformer is equipped with an advanced cast resin insulation system and optimized electromagnetic design for superior reliability, safety and durability. It is specially designed to run continuously under heavy load conditions and provide stable power supply for critical applications where downtime is not an option.

Application scenarios：

High-rise buildings: offices, residences, hotels; fire-proof and explosion-proof, for interior installation.

Rail transport: underground railway, high-speed rail stations, tunnel power supply systems.

Commercial complexes: Shopping malls, convention centers, big supermarkets.

 Industrial and mining areas: precision workshops, dust-free and fire-proof workshops in the chemical and metallurgical industries.

Public facilities: Hospitals, schools, stadiums, data centers.

Municipal power distribution: substations for cities, industrial zones, sites of charging stations.

Ship cabin and offshore platform power supply (marine and offshore)

Main Features: Oil-free flame retardant, low noise, small size, maintenance-free, Top choice for fire-prohibited area.

Product Features:

Ultra High Energy Efficiency

SC(B)14 is an energy efficiency class 2 dry-type transformer. The transformer has the highest energy conversion efficiency in the industry, and the no-load and load losses have been greatly reduced when compared with the lower efficiency classes. This means that over the lifetime of the transformer there are significant electricity savings and it is a smart long term investment for energy conscious businesses. Reduced energy consumption also helps to reduce greenhouse gas emissions, supporting your company’s sustainability goals.

Excellent mechanical and electrical performance

The transformer of GB20052-2020 standard is designed with solid mechanical structure, and excellent short-circuit resistance and seismic performance. The precision-wound coils and advanced clamping system ensure excellent electrical insulation and mechanical stability even under extreme operating conditions. It decreases the possibility of equipment failure and prolongs the life span of the transformer.

Operation is almost maintenance free.

The maintenance-free, dry-type transformer is fully enclosed in cast resin, eliminating the need for oil changes, leak detection and other routine maintenance routines required for oil-immersed transformers. The insulating material is resistant to UV radiation, chemical corrosion and temperature variations and therefore is able to reliably operate in harsh outdoor and indoor environments with minimum intervention.

Improved safety features

Explosion-proof dry type transformer is intrinsically fire resistant and non-toxic, and no oil fires and environmental pollution are involved. It does not generate any harmful gases or smoke in case of a fault, thus ensuring the safety of persons and property. It also has advanced temperature monitoring and protection systems that automatically shut down the transformer if it overheats, preventing catastrophic failures.

Technical Parameter

Related Knowledge  

Dry type transformers are a new type of power transformer equipment, which are different from traditional oil-immersed transformers. The entire unit uses air convection for heat dissipation and solid-state insulation, not insulating oil as a heat dissipation or insulation medium. The whole structure is accurate and highly integrated, which is mainly composed of iron core, high and low voltage windings, insulation system, heat dissipation structure, temperature control and protection system and external protective structure. All components work in synergy to ensure long-term stable and safe operation.

1. Design of iron core

The iron core of the dry-type transformer is made up of high permeability, high quality grain oriented silicon steel sheets. Multi-stage lamination processes and accurate cutting and splicing techniques are effective measures to reduce the hysteresis loss and eddy current loss of the iron core. The tight-fitting structure fixes the iron core, combined with the shock-absorbing design, which can minimize electromagnetic vibration in the equipment operation, and significantly reduce no-load noise and abnormal operating sounds. Meantime, the regular iron core structure ensures the distribution of magnetic flux to be uniform, which is conducive to improving transformer efficiency, reducing no-load energy consumption, and making transformer more energy-saving and stable in long-term continuous operation.

2. Structure of High and Low Voltage Windings

Windings are the main conductive and transforming elements of dry-type transformers. Dry-type transformers consist of two sets of structures: high-voltage windings and low-voltage windings. Nowadays, the epoxy resin vacuum casting technology is used in the mainstream dry-type transformers to seal and solidify the winding coils as a whole. Some models use a wound-wound dry type insulation structure. The coil conductors are arranged neatly, tightly and uniformly, and form a high-strength integral solid structure after high-temperature curing, which completely solves the problems of coil loosening and displacement in traditional oil-immersed transformers. The cured windings possess very high mechanical strength, which effectively resists the impact of short-circuit currents of the power grid, and the deformation, displacement and damage of the coil are less likely to occur, thereby improving the operational stability and service life of the equipment from the core point of view.

3. All Solid State Insulation System

Dry type transformers do not use the oil-based insulation medium of conventional transformers, but use a solid insulation system consisting of only the epoxy resin and composite insulation materials to form a complete high-strength insulation protective layer. The insulation structure is compact and seamless, with excellent moisture-proof, dust-proof, dirt-proof, aging resistance and arc resistance properties, so it can adapt to the complex working environments such as humid, dusty and closed environments. The insulation performance will not be reduced with time in long-term energized operation, thus removing potential hazards such as oil leakage and insulation failure, and completely preventing common problems in oil-immersed transformers such as insulation aging, oil deterioration and creepage discharge.

4. Air-Based Cooling Assembly

The equipment is primarily cooled by natural air convection. The heat produced by the core and windings is dissipated by natural air circulation between the transformer body and the outside environment, so that oil tanks, oil pipes, cooling oil and other supporting structures are not required. The equipment is equipped with intelligent axial-flow forced-air cooling fan for dry-type transformers under large capacity and high load conditions. When the equipment temperature reaches a certain set point, the fan will turn on automatically to increase the airflow and quickly reduce the body temperature, thus effectively enhancing the overload capacity and the continuous operating capacity of the transformer. The overall cooling structure is simple and reliable, without easily worn oil circuit components, so the cooling efficiency is stable and long-lasting.

5. Intelligent temperature control and safety accessories

The dry type transformer is provided with a full set of accessories as standard: intelligent temperature control system, temperature sensors, cooling fans, tap changers and inlet/outlet terminal blocks. The temperature control system has the functions of accurately monitoring the operating temperature of the three-phase windings in real time, over-temperature alarm, over-temperature tripping, automatic fan start/stop. It can monitor the operating status of the equipment in real time and prevent the high-temperature overload and overheating faults proactively. The tap changer can flexibly adjust the voltage level due to the change of the grid voltage to adapt to different power supply conditions. Standard terminal block structure, neat and secure, safe and convenient wiring. Applicable to various power distribution systems.

6. External Protective Enclosure Structure  

The whole unit is provided with an integral metal protective enclosure. The protection level can be adjusted according to different scenarios, effectively preventing external dust, debris and moisture from entering the device. It also prevents accidental contact with live parts, thereby ensuring personal safety and the cleanliness of the inside of the equipment. The enclosure structure is made of robust and durable, impact-resistant and corrosion-resistant materials, suitable for various installation scenarios such as indoor power distribution rooms, computer rooms and enclosed spaces, effectively protecting the internal core components from external environmental interference.

Main Features:

1. Fireproof & Explosion-proof: No insulating oil, no burning or oil leakage.

2. Security and reliability: strong short-circuit resistance, less likely to cause fire due to malfunction.

3. Easy to maintain: No oiling, little maintenance, simple daily care.

4. Environmental Adaptability: moisture-proof and dust-proof, can be installed in a closed indoor place.

5. Low Noise: Low operating vibration, minimal disturbance to residents.

6. Small Size: Small size, high space utilization in server room.

7. Environmentally Friendly and Clean: No oil pollution, green power source.

Standard Terms of Application:

1. Max. ambient temperature ≤ +40℃ 2.

2. Minimum ambient temperature is ≥ -25℃

3. Standard installation height ≤1000m

4. Installation indoors only in a dry, well-ventilated place.