Dry Type Transformer

Voltage level:

6-35 kV

Transformer capacity:

30-31500kvA

Products include:

Epoxy resin insulated dry-type transformers
Class H air-insulated dry-type transformers
Amorphous alloy core dry-type transformers
Cubic coil core air dry type transformer

Category:

Description

  

Product Structure and Manufacturing Techniques

  1. Iron Core:

    • Utilizes GEORGE auto shear (from Germany) – GEORGE 400 and GEORGE 600 modes cut silicon-steel sheets with precision (< 0.02mm burr).
    • Incorporates high-quality Japanese silicon-steel sheets to reduce no-load power consumption and noise.
    • H-insulated oil lines and Double H-glue ensure reliable performance and long service life.
    • Adopts a five-stage stepping joint, adjustable champ force, and elastic bearing assembly for cushioning and shock resistance.

  2. Coil:

    • High-voltage coils: Sectional cylinder coils, withstand high voltage, have high fire resistance, and fine cooling systems.
    • Low-voltage coils: Copper foil coils, cast using DMD Pre-impregnated heat distribution method for high efficiency and short-circuit resistance.

  3. Thin Insulation Layer:

    • Winding enclosed by reinforced film resin with compound silicon-hydride glass-fiber (withstands 200℃) for high mechanical strength.
    • Ensures expansion/shrinkage with winding, preventing resin layer splitting, and aids heat radiation.

  4. Casting:

    • Coils processed in VACUUMPEK3/150E (HEDRICH CO, LTD. Germany) vacuum casting pot using Cibasc-F epoxy resin, solidified agent, and glass fiber.
    • Ensures low/no partial discharge and a controlled casting process to guarantee performance.

  5. Transformer Casing:

    • Uses a framework modular aluminum alloy casing for compactness and rigidity.
    • Adapts to IP20 or IP23 standards for indoor/outdoor applications, ensuring safety and heat radiation capacity.

  6. Quality and Testing:

    • Focuses on quality consciousness, emphasizing ISO9001 Quality System Certification, and implementing 6-Sigma quality control.
    • Conducts various specialized tests for compliance with international standards.

  7. Technical Support and Service:

    • Provides comprehensive systematic technical support, values customer feedback, and continuously improves product and service quality.

  8. Environmental Considerations:

    • Ensures environmentally friendly manufacturing, operation, and disposal processes in line with ISO14001 standards.
    • Allows for the disassembly of expired transformers with a high recovery ratio for reuse or environmentally friendly disposal.

  9. Sustainable Development:

    • Adheres to ISO14000 and ISO18000 standards and conducts experiments for heat shock resistance, environmental adaptability, and fire resistance, aiming for continuous improvement.

 

Factory Photos

Material stacking area

assembly area

inspection area

finished product

     

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