2500kva Dry Type Isolation Transformer

Zhejiang Tianrun Electric Co., Ltd. is one of the leading manufacturers and suppliers of 2500kva dry type isolation transformer in China. We are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk advanced 2500kva dry type isolation transformer from our factory. Also, quotation is available.

The SCB18 is a 2.5 MVA dry type transformer with high efficiency silicon steel dry-type transformer, compliant with top-tier IEC international energy efficiency and safety standards. This product utilizes low-loss silicon steel and an optimized core structure design, reducing no-load loss to an industry-leading level. Its compact winding process achieves a low discharge rate. It is maintenance-free, with strong overload and short-circuit withstand capability and high reliability. Featuring energy-efficient design across all operating conditions, it is a benchmark power project for global low-carbon demonstration programs.

Note: More technical parameters of the transformer can not be reflected in the model, more information is required to check the technical parameters.

Technical Parameter Table of 6kV, 10kV 30kVA ~ 2500kVA Non-exciting Voltage Regulating Distribution Transformer

Note: The technical parameters of our transformers are for reference only. Customized solutions are available, with specifications adjustable according to project‑specific requirements.

• Civil and public facilities: Suitable for locations with stringent safety and stability requirements, such as high-rise buildings, airports, railway stations, ports, subways, hospitals, and densely populated residential areas.
• Industrial and specialized applications: Can be deployed in complex environments with rigorous equipment performance requirements - such as power plants, petrochemical facilities, and nuclear power plants - demonstrating exceptional environmental adaptability.

1-Wire‑wound winding of transfomer

2-Foil‑wound winding of transfomer

3-Vacuum casting of transformer

4-Epoxy resin casting of transfomer

5-Coil assembling over core

6-HV porcelain bushings of oil immersed transformer

7-Lead insulation taping and welding of transfomer

8-Vacuum oil filling of transformer

9-Tank sealing of transformer

1-Measurement of winding resistance testing of transformer

2-Measurement of voltage ratio and check of phase displacement testing of transformer

3-Separate‑source AC withstand voltage testing of transformer

4-Measurement of no‑load loss and no‑load current of transformer

5-Measurement of short‑circuit impedance and load loss of transformer

6-No load loss and no load current testing of transformer

7-Temperature‑rise test of transformer

8-Partial‑discharge measurement of transformer

9-Winding ressitant and voltage ratio testing of transformer

SCB14 Three-Phase Resin-Cast Dry-Type Transformer is an energy-efficient dry-type transformer for general distribution applications. Featuring a grain-oriented silicon steel core and vacuum epoxy resin cast windings, it is oil-free, flame-retardant and maintenance-free, complying with IEC 60076-11 and GB/T 1094.11. Its loss level corresponds to China's NX2 (Level 2) energy efficiency, with no-load loss approximately 15% lower and load loss approximately 10% lower than the SCB12 series. It is suitable for industrial parks, commercial complexes and office buildings where energy efficiency is required with budget sensitivity.

SCB18 Three-Phase Resin-Cast Dry-Type Transformer represents the highest energy efficiency level (NX1 / Level 1) among current grain-oriented silicon steel dry-type transformers. It employs a 0.23 mm ultra-thin high-permeability silicon steel core with 45° fully mitered lap joints and foil-type low-voltage windings, achieving approximately 15%–20% lower no-load loss than SCB14 while load loss remains comparable. Operating noise is as low as 42–58 dB. Complying with IEC 60076-11 and IEC/TS 60076-20 energy efficiency standards, it is ideal for data centers, hospitals, rail transit, EV charging clusters and other critical distribution applications with high electricity tariffs, 24/7 operation, and stringent noise and efficiency requirements.

The only fundamental difference between SCB18-H and SCB14-H is the no-load loss P0.

Through thinner silicon steel (0.23 mm) + 45° fully mitered step-lap core + larger core cross-section, SCB18 reduces no-load loss by 15–20%, with associated benefits of lower no-load current, lower noise, and higher efficiency. The trade-off is larger size, heavier weight, and 10–20% higher price.

All other dimensions - load loss Pₖ, insulation class, electrical ratings, test standards - are identical.

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