Customized Service and Strength Display of Medium and High Voltage Power Transformer

Flexible Customization Range

adapt to needs and meet requirements precisely

01 Custom voltage level

Medium voltage levels

10kV, 20kV, 35kV (standard coverage)

 

High voltage levels

60kV, 66kV (special voltage configurations available upon request)

 

Compatibility requirements

The voltage ratio and tap range can be adjusted according to grid planning and load characteristics.

02 Customization of energy-saving levels

National standard compliance

Fully compliant with GB 20052-2020 "Energy Efficiency Limits and Energy Efficiency Grades for Power Transformers"

 

Available energy efficiency levels

Level 1 (ultra-efficient) and Level 2 (mainstream energy-efficient), meeting various energy consumption control requirements

 

Energy Efficiency Optimization

Achieving Lower Losses Through Core Material Upgrade (Amorphous Alloy / High Magnetic Conductivity Silicon Steel) and Coil Structure Optimization

03 Customization of wear parameters

Loss type	Customization range	Optimization method
No-load Loss	Reduce by 10%–30% (vs. standard values)	Upgrade of core lamination process and vacuum annealing
Load loss	Reduce by 8% -25%	Optimization of copper conductor cross-section and tightened coil winding
Total loss	Align with energy efficiency targets on demand	Optimization via electromagnetic simulation

04 Other customization dimensions

Capacity

30kVA to 10000kVA (per unit), supports multi-unit parallel expansion

 

Cooling methods

Oil-immersed self-cooling (ONAN), oil-immersed air-cooling (ONAF), forced oil circulation air-cooling (OFAF), and dry air self-cooling (AN).

 

Structural form

Oil-immersed (sealed/non-sealed), dry (epoxy resin cast), compact (space-constrained scenarios)

 

Specialized performance

Engineered for high-altitude (≥3000m), high-humidity (relative humidity ≥95%), and contaminated environments (anti-condensation/corrosion), with low-temperature (≤-40℃) operation. Customized solutions include earthquake resistance, salt spray protection, and noise reduction (≤55dB).

Standardized Customization Process

• 01

  Requirement alignment

  One-on-one communication with professional engineers to clarify core requirements such as voltage, capacity, loss, environment, and installation conditions, and output the "Requirement Confirmation List"

• 02

  Project timeline

  Complete electromagnetic simulation and structural design within 72 hours, and deliver the Technical Proposal (including loss calculation, dimensions, weight, and quotation).

• 03

  Sample testing

  For verification, a prototype may be manufactured and a third-party test report (covering key indicators such as wear, voltage withstand capability, and partial discharge) provided.

• 04

  Contract confirmation

  Specify technical parameters, delivery cycle, quality standards, and after-sales terms, then sign the formal contract

• 05

  Manufacturing

  We independently produce core components (core stacking and coil winding), with real-time monitoring of key processes. Customers can schedule factory tours.

• 06

  Strict inspection

  100% full-item testing before factory release, with a "Factory Release Inspection Report" provided.

• 07

  Logistics delivery

  Professional logistics team (including large transport vehicles and lifting equipment), full insurance coverage, and on-site unloading

• 08

  Installation and debugging

  Provide an installation guide or arrange for engineers to perform on-site debugging to ensure the device operates properly

• 09

  After-sales support

  1 year free maintenance and lifetime technical support after delivery

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Core Equipment Showcase

Comprehensive Quality Inspection

Detection criteria

National standard: GB/T 1094.1-2013 "Power Transformer Part 1: General" and GB/T 1094.2-2013 "Power Transformer Part 2: Temperature rise of liquid-immersed transformer" and other full series of standards

International standard: IEC 60076 series (optional compatibility)

Detection safeguards

Each device passes a full factory inspection and comes with a test report.

Supports third-party authoritative institutions (such as the National Transformer Quality Supervision and Inspection Center) for re-inspection, with costs negotiable

Core Testing Items

Factory Strength Assurance

01 Production scale

The facility covers a total area of 20,000 square meters, including 17,000 square meters for production workshops, 3,000 square meters for testing centers, 1,000 square meters for experimental centers, and 2,000 square meters for logistics corridors.

 

Core production lines: 3 core stacking lines, 4 coil winding lines, 2 body assembly lines, and 2 final assembly testing lines.

02 Core production equipment

Precision machining equipment: CNC plate shear, CNC bending machine, automatic core laminating machine, vacuum drying tank (50m³ capacity)

 

Specialized equipment: epoxy resin casting equipment (dry-type transformer), vacuum oil filter, and large-scale winding machine (with a maximum coil diameter of 3 meters).

03 Research and Development Capabilities

The R&D team comprises 20 members, including 8 senior engineers, and holds 15 transformer-related patents (including 3 invention patents).

 

Technical capabilities: Possess core technologies including electromagnetic simulation, structural optimization, and energy-saving upgrades, enabling rapid response to special customization needs.

04 Qualification Certification

System certification: ISO9001 Quality Management System, ISO14001 Environmental Management System, and ISO45001 Occupational Health and Safety Management System

 

Product certifications: CCC mandatory certification, CE certification, energy efficiency labeling, and type test report (covering all voltage levels).

05 Production Capacity and Deliveries

Annual production capacity: 5,000 oil-immersed transformers and 3,000 dry-type transformers per year

 

Standard delivery time: 30-45 days. Express orders can be reduced to 20-25 days.

Commitment To Cooperation And Support

• 

  Quality warranty

  The equipment comes with a 1-year warranty, during which free repairs or replacement of faulty parts (non-human damage) are provided.

• 

  After-sales response

  Respond to after-sales requests within 12 hours

• 

  Technical support

  Lifetime technical consultation and spare parts supply

• 

  Compliance assurance

  All products meet the State Grids network access standards and can provide network access testing assistance.