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Help Center1000KVA Transformer With 100% Copper Windings and Mill Test Report Provided
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As a specialized manufacturer of electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. is committed to delivering robust and reliable power solutions for the global market. Our 1000KVA Transformer, featuring 100% copper windings and accompanied by a comprehensive Mill Test Report, is engineered for performance and longevity. Designed to meet the rigorous demands of industrial and commercial power distribution, this transformer ensures efficient energy transfer and stable voltage regulation, providing a cornerstone for your electrical infrastructure.
This transformer is built with a focus on durability and operational efficiency. The use of pure copper windings is a critical design choice, offering superior conductivity and thermal performance compared to alternative materials. This results in lower energy losses, reduced operating temperatures, and enhanced overall reliability, which translates into long-term cost savings and reduced maintenance requirements for our clients.
Core Product Features & Technical Advantages:
- 100% Copper Windings: The heart of the transformer utilizes high-purity electrolytic copper for both primary and secondary windings. This ensures minimal resistive losses (I²R losses), excellent overload capacity, and superior resistance to thermal degradation over the transformer's lifespan.
- Comprehensive Mill Test Report (MTR): We provide traceable documentation for all critical materials, including the copper windings and core steel. This report verifies the chemical composition, mechanical properties, and conformance to specified standards, offering transparency and quality assurance for procurement and engineering teams.
- Optimized Magnetic Core: Constructed from high-grade, grain-oriented silicon steel laminations, the core is designed to minimize hysteresis and eddy current losses. The core assembly process ensures tight clamping and secure locking to prevent noise and vibration.
- Robust Tank and Cooling System: The welded steel tank is pressure-tested for leak-proof integrity. It houses the ONAN (Oil Natural Air Natural) cooling system, where natural convection of oil and air effectively dissipates heat under normal load conditions.
- Advanced Insulation System: The transformer employs a Class F or higher insulation system, impregnated and vacuum-dried to remove moisture. This provides excellent dielectric strength and thermal endurance, ensuring safe operation even under demanding environmental conditions.
- Precision Tap Changer: Equipped with an off-circuit tap changer (typically ±2x2.5% or ±5%), allowing for voltage ratio adjustment to compensate for supply voltage variations and optimize performance for the specific installation.
- Complete Accessory Package: Standard fittings include pressure relief device, silica gel breather, temperature indicators (oil & winding), drain and filling valves, and lifting lugs. Buchholz relay and other protective devices are available as options.
Key Technical Specifications:
| Parameter | Specification |
| Rated Power | 1000 kVA |
| Primary Voltage | Customizable (e.g., 11kV, 33kV) |
| Secondary Voltage | Customizable (e.g., 400V, 480V) |
| Frequency | 50 Hz or 60 Hz |
| Vector Group | Dyn11, Yyn0, or as required |
| Impedance Voltage | Typically ~6% (as per design) |
| No-Load Loss (Po) | Compliant with relevant efficiency standards (e.g., DOE, CUI) |
| Load Loss (Pk) | Optimized for high efficiency operation |
| Sound Level | Designed to meet specified NEMA or IEC limits |
| Insulation Liquid | High-quality mineral oil or ester fluid (optional) |
Benefits for Your Operation:
- Enhanced Energy Efficiency: Lower total ownership cost through reduced electricity losses during power transformation.
- Superior Reliability & Uptime: High-quality materials and construction minimize the risk of unexpected failures, supporting continuous operations.
- Reduced Maintenance Burden: Robust design and quality components lead to a stable, long-service-life product requiring minimal intervention.
- Compliance & Documentation: The provided Mill Test Report simplifies regulatory compliance, quality audits, and asset management.
- Application Versatility: Suitable for a wide range of applications including factory power distribution, commercial complexes, renewable energy substations, and mining operations.
Backed by Jinhua Dika's manufacturing expertise and a commitment to quality management systems, this transformer represents a reliable investment. Our annual export value of US$1 Million - US$1.5 Million to diverse markets including North America, Europe, Southeast Asia, and Africa is a testament to the global acceptance of our products. We support shipments from major Chinese ports like Shanghai, Tianjin, Guangzhou, and Ningbo, ensuring smooth logistics. Choose this 1000KVA copper-wound transformer for a balance of performance, durability, and verified quality that forms the dependable backbone of your power network. Contact us to discuss your specific voltage and configuration requirements.
Frequently Asked Questions (FAQ)
Q1: What are the primary advantages of using 100% copper windings instead of aluminum?
A1: Copper windings offer significantly higher electrical conductivity, which translates to lower energy losses (higher efficiency) and better heat dissipation. Copper also has superior mechanical strength and creep resistance, leading to a more robust and longer-lasting transformer, especially under frequent load cycling or short-circuit conditions.
Q2: What exactly is included in the Mill Test Report you provide?
A2: The Mill Test Report is a certificate from the material producer. For the copper windings, it typically includes analysis of copper purity (e.g., >99.95%), tensile strength, elongation, and resistivity. For the core steel, it includes grade, thickness, and core loss data. This provides verifiable proof of material quality.
Q3: Can this 1000KVA transformer be customized for different voltage ratings and vector groups?
A3: Yes, absolutely. While 1000KVA is the standard capacity, the primary and secondary voltage ratings (e.g., 11kV/400V, 33kV/480V) and the vector connection group (e.g., Dyn11, Yyn0) are fully customizable to match your regional grid standards and application requirements.
Q4: What efficiency standards does this transformer comply with?
A4: Our transformers are designed to meet or exceed relevant international and regional efficiency standards, such as DOE (USA), CUI (Canada), EU Directive 548/2014, and AS/NZS (Australia/New Zealand). Specific efficiency values (no-load and load loss) will be provided based on the finalized design parameters.
Q5: What is the typical delivery lead time for a custom-configured unit?
A5: Lead time depends on the order complexity and current production schedule. Generally, for a standard-design 1000KVA unit, delivery can be arranged within 6-8 weeks after order confirmation and technical specification finalization. Expedited options may be available.
Q6: Do you offer any warranty or after-sales support?
A6: We provide a standard warranty period for our transformers, covering manufacturing defects. Additionally, we offer technical support for installation guidance and can supply recommended spare parts. Specific warranty terms are detailed in our commercial contract.
Q7: What cooling options are available besides ONAN?
A7: The standard model features ONAN cooling. For applications requiring higher capacity or specific environmental conditions, we can offer transformers with ONAF (Oil Natural Air Forced) or other cooling classifications upon request.
Q8: How do you ensure the transformer's performance and safety before shipment?
A8: Every transformer undergoes a series of routine tests as per international standards (like IEC 60076), which include resistance measurement, ratio test, impedance test, no-load loss test, load loss test, and dielectric tests. A full test report is provided with the unit.
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