SBK Three Phase Dry-Type Transformer

The SBK three phase dry-type transformer adheres to our Yibaling Company's core manufacturing concept of materials determine performance. In the selection of core materials, strict industry standards are followed.

The magnetic circuit system is constructed with high-quality cold-rolled silicon steel sheets from Wuhan Iron and Steel, combined with copper-core electromagnetic wires of H-level (180℃) and above insulation temperature grades.

The entire system undergoes three rounds of vacuum pumping and two rounds of pressure impregnation (VPI) treatment, and is sealed and cured with imported German high-temperature resistant insulating paint in multiple layers to ensure that the insulating medium penetrates deeply into each layer of the winding gap.

This high magnetic conductivity material + full copper winding + VPI reinforced insulation triple guarantee ensures that the transformer has low no-load loss, high mechanical strength, and excellent moisture-proof and anti-fouling capabilities.

And before each equipment is manufactured, it has undergone extreme environment accelerated aging verification.

Basic Product Information

Model significance

Target customer group

This three-phase dry-type transformer is mainly used as the core component of industrial power systems. The target customer group is precisely focused on the leading industries that have strict requirements for power supply quality, equipment safety, and environmental adaptability.

High-end Equipment Industry: The SBK series can be used in semiconductor manufacturing and precision CNC machine tools, ensuring absolute voltage stability and electrical isolation safety during precise processing.

Critical Facilities: It is also deeply applied in key facilities such as airport terminals, urban rail transit, and super-large data centers, providing all-weather protection for continuous and stable operation.

New Energy: It has been successfully matched with photovoltaic inverter systems and wind power AC devices, helping clean energy to be efficiently connected to the grid.

Our Yibaling Power Equipment Company is always committed to providing high-quality the SBK three phase dry-type transformers for leading customers in various industries and is also providing customers with a safe and reliable power safety guarantee system.

Advantage

This SBK series three-phase dry-type transformers have constructed a multi-dimensional value system covering the entire life cycle for our customers:

Economy: the energy-saving design (with a 30%+ reduction in no-load loss) and low maintenance cost features can reduce the customer's total operating cost by over 35% within three years.

Reliability: through extreme environment tests (-40°C to 155°C temperature range and 95% humidity salt spray environment), we ensure that the transformers can achieve 15 years or more of unattended operation under extreme conditions.

Our Yibaling Company is not only a simple equipment supplier for the SBK three phase dry-type transformers, but also provides customers with a asset efficiency improvement + operation risk control + sustainable development capability integrated power infrastructure solution.

Problems that may arise during use and the corresponding solutions

Although SBK three phase dry-type transformerss are more reliable and safer than oil-immersed transformers, in actual operation, if the selection, installation or maintenance is improper, some typical problems will still occur. These problems mainly revolve around their core characteristics such as heat dissipation, insulation, noise and mechanical structure.

The problems exposed by the SBK three phase dry-type transformers during actual operation mainly stem from their reliance on air convection for heat dissipation, the susceptibility of the insulation system to environmental factors, and the physical structural characteristics of the iron core and windings.

1. Overheating and abnormal temperature rise

This problem is not merely due to overload but is caused by severe imbalance of three-phase loads or the generation of large harmonic currents by non-linear loads such as downstream frequency converters, resulting in additional iron loss and copper loss.

At the same time, narrow installation space and clogged cooling air ducts can exacerbate this problem.

2. Insulation deterioration

This is another major risk, especially in humid, dusty, or corrosive gas environments, where windings (especially non-epoxy cast epoxy-coated windings) are prone to moisture absorption or surface contamination, leading to a continuous decline in insulation resistance and potentially causing local discharge or even short circuits.

3. Abnormal noise and vibration

This may also occur in actual applications, often resulting from the loosening of iron core clamps or windings under long-term electromagnetic force or harmonic influence, or resonance caused by unstable installation foundations.

4. Mechanical and electrical connection failures

Such as loose connections at the inlet and outlet terminals of dry-type transformers due to thermal expansion and contraction, and rusting of the casing in outdoor environments, directly threaten operational safety.

These problems is mostly the result of incompatible selection configuration and operating environment or lack of preventive maintenance.

Therefore, from the source, accurately select SBK three phase dry-type transformers based on the actual environment (such as choosing higher protection level IP54, anti-harmonic K-class transformers).

And strictly implement regular dust removal, connection tightening, monitoring of three-phase balance and temperature rise during operation for preventive maintenance.

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Production Process

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