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Help CenterThree-Phase 1000KVA 11kV Oil-Immersed Transformer With Copper Windings
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As a specialized manufacturer of electrical equipment, Jinhua Dika Electrical Equipment Co., Ltd. is proud to present our Three-Phase 1000KVA 11kV Oil-Immersed Transformer with Copper Windings. Engineered for robust performance and long-term reliability in demanding power distribution applications, this transformer is a cornerstone of efficient electrical infrastructure. We combine proven oil-immersed cooling technology with high-quality copper windings to deliver a product that ensures stable voltage transformation, minimized energy losses, and exceptional operational durability for our global clientele in industrial, utility, and commercial sectors.
This transformer is designed to meet the critical needs of modern power systems. Below are its key features and technical specifications:
- High-Efficiency Copper Windings: The use of high-conductivity copper for both primary and secondary windings significantly reduces resistive losses (I²R losses), leading to higher operational efficiency and lower lifetime electricity costs compared to aluminum-wound alternatives.
- Superior Cooling and Insulation: The oil-immersed design provides excellent heat dissipation and insulation. The dielectric oil circulates naturally, absorbing heat from the core and windings, which maintains optimal operating temperatures and extends the service life of the internal components.
- Robust Mechanical Construction: The transformer features a sturdy tank construction with welded seams and reinforced fittings to prevent oil leaks. The core is made from high-grade, grain-oriented silicon steel laminations to minimize core losses and reduce audible noise.
- Flexible Configuration Options: While designed as a standard unit, various accessories and modifications are available, including different types of bushings (porcelain or polymer), pressure relief devices, temperature gauges, and protective relay interfaces to suit specific project requirements.
- Designed for Easy Maintenance: Key components such as the conservator tank, silica gel breather, and drain valve are strategically placed for easy access, simplifying routine inspections, oil sampling, and maintenance procedures.
Here is a summary of the primary technical parameters:
| Parameter | Specification |
| Rated Capacity | 1000 kVA |
| Rated Voltage (High Voltage) | 11 kV |
| Rated Voltage (Low Voltage) | 400V / 415V / 433V (or as required) |
| Frequency | 50 Hz / 60 Hz |
| Vector Group | Dyn11, Yyn0, or others |
| Impedance Voltage | Approx. 4% to 6% (standard) |
| No-Load Loss (Po) | As per relevant standards (e.g., ≤ 1.5 kW) |
| Load Loss (Pk) | As per relevant standards (e.g., ≤ 10 kW at 75°C) |
| Cooling Class | ONAN (Oil Natural Air Natural) |
| Insulation Level | LI 75 kV AC / 35 kV (standard) |
| Ambient Temperature | -25°C to +40°C |
| Altitude | Up to 1000 m above sea level |
The advantages of choosing our 1000KVA oil-immersed transformer translate directly into tangible benefits for your operation:
- Cost-Effective Operation: Lower total ownership cost due to high efficiency, reduced maintenance needs, and long service life.
- Enhanced System Stability: Provides reliable voltage transformation, helping to protect downstream equipment from voltage fluctuations.
- Proven Safety: The oil-immersed design offers inherent flame-retardant properties and reliable overload capacity for short durations.
- Global Compatibility: Can be manufactured to comply with various international electrical standards and grid requirements.
Backed by Jinhua Dika's commitment to quality and a robust operational framework—including an ISO 9001 certified quality management system and an annual export value ranging between US$1 Million and US$1.5 Million—this transformer represents a reliable investment. Our products are shipped from major ports like Shanghai, Tianjin, Guangzhou, and Ningbo, ensuring smooth logistics to our main markets across North America, Southeast Asia, Europe, Africa, and beyond. With a dedicated team of 11-50 professionals, we ensure meticulous attention to detail from design to delivery. Choose this transformer for a balance of performance, durability, and value that powers progress.
Frequently Asked Questions (FAQ)
Q1: What are the main advantages of copper windings over aluminum in this transformer?
A1: Copper windings offer higher electrical conductivity, which results in lower resistive losses under load. This leads to higher overall efficiency, better heat dissipation, and generally greater mechanical strength and resistance to thermal cycling, contributing to a longer operational lifespan.
Q2: Is this transformer suitable for both 50Hz and 60Hz power systems?
A2: Yes, the transformer can be designed and manufactured to operate efficiently on either 50Hz or 60Hz systems. The specific design parameters, such as core sizing, will be optimized based on the required frequency. Please specify your frequency requirement during inquiry.
Q3: What kind of maintenance does an oil-immersed transformer require?
A3: Routine maintenance typically involves periodic visual inspections, checking oil levels, sampling and testing the dielectric oil for moisture and breakdown voltage, cleaning the breather, and verifying the operation of protective devices. These procedures are straightforward and help ensure long-term reliability.
Q4: Can the low-voltage output be customized to match my local grid standard?
A4: Absolutely. Common low-voltage outputs like 400V, 415V, or 433V are standard, but we can customize the secondary voltage and winding configuration (vector group) to meet your specific regional or project requirements.
Q5: What safety features are included?
A5: Standard safety features often include a pressure relief device (PRD) to vent excess internal pressure, a silica gel breather to keep moisture out of the oil, and temperature indicators. Additional protective relays for Buchholz (gas detection) and temperature can be fitted upon request.
Q6: What is the typical delivery lead time for this 1000KVA model?
A6: Lead time depends on order quantity, customization level, and current production schedule. Generally, for standard configurations, production can be completed within 4-6 weeks after order confirmation. We provide accurate timelines for each project.
Q7: Do you provide installation guidance or technical support?
A7: Yes, we provide detailed installation manuals, wiring diagrams, and technical data sheets with each unit. Our engineering team is also available to offer remote technical support during the installation and commissioning phases to ensure correct setup.
Q8: What are the packaging and shipping terms?
A8: The transformer is typically shipped in a robust, weather-resistant wooden crate suitable for ocean freight. We handle export formalities and ship from major Chinese ports (Shanghai, Tianjin, etc.). We work with various Incoterms (FOB, CIF, etc.) based on customer preference.
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