Purchase from Chinese suppliers 220KV 230KV Oil-Immersed Power Transformers
Instrava understands that 110kV~230kV power transformers are critical assets, and grid failures are absolutely unacceptable. Therefore, we work with you to make the procurement decision.
As your trusted partner, we carefully evaluate reliable manufacturing plants and verify their qualifications by visiting and inspecting certified transformer factories on-site.
Quotes for large transformer projects are available in approximately 7 days.
Production cycles are between 60 and 90 days.
Transformer Description
China’s transformer manufacturing core technologies are internationally leading/first-of-its-kind.
Transformer Fault Active Defense Technology (Trip):A world first, deeply integrating partial discharge monitoring with relay protection, achieving a leap from “post-incident remediation” to “automatic tripping before explosion.” Verified with zero false tripping after 1.8 million interference tests, the technology has been identified as internationally leading and is compatible with 110kV and above equipment.
500kV Industrial Rectifier Transformer Direct Step-Down Solution: The world’s first such product, breaking through the traditional “220kV + step-down substation” model, achieving direct step-down of 500kV to over 1000V power supply, eliminating intermediate links, improving system efficiency by approximately 0.4%, and significantly reducing infrastructure costs.
Solid-State Transformer Engineering Applications: Targeting high-frequency scenarios such as AI data centers, achieving a breakthrough from laboratory to engineering applications, possessing high-frequency, miniaturized, and excellent power quality control capabilities, with some indicators even surpassing previous performance levels.
Ultra-high voltage intelligent monitoring and digital twin operation and maintenance: Overcoming core technological barriers in the 1000kV ultra-high voltage field, integrating online diagnostics, 5G smart factory full-process traceability, and digital twin operation and maintenance systems to achieve precise control throughout the entire lifecycle.
Breakthrough Innovation in China’s Special High-Voltage Step-Down Transformer
As the world’s first station service transformer to directly step down from 750 kV to 10 kV, this product has overcome a series of industry challenges, including insulation design under ultra-high turns ratios, electric field balancing, and lightweight structure. It has successfully set five world records in the field of station service transformers: largest station service capacity, highest voltage level, highest turns ratio, most winding turns, and highest transmitted overvoltage. This provides crucial equipment support for the intensive and efficient construction of converter stations.
The overvoltage transmitted between the high and low voltage windings reaches 1054%, exceeding the insulation level of the low-voltage winding itself by more than 10.5 times. A series of technical measures adopted provide a solid guarantee for the safe operation of the equipment.
Transformer Parameter
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Phase
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Three
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Coil Number
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2
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Usage
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Power
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Coil Structure
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Pie coil
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Rated Primary Voltage
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110
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Rated Secondary Voltage
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11
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Power
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10MVA
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Standard
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IEC60076
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Warranty
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2 Years
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Cooling Method
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ONAN
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Frequency
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50 / 60Hz
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Vector Group
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YNd11
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Material
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Copper / Aluminium
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Application
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Mining
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Impedance
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10.5
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Tapping Ranges
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±8*1.25%
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| Main Technical Parameters for oil-immersed power transformer | ||||||||
| Rated Power(kva) | High Voltage(kv) | H.V.Tap range | Low Voltage(kv) | Connection symbol | Short Circuit Impendence | No-load loss(kw) | On-load loss(kw) | No-load current(%) |
| 6300 | 63 66 69 110 132 138 220 |
±8x 1.25% |
6.3 6.6 10.5 11 33 69 |
YNd11 YNyn0 others |
10-14 | 9.4 | 34 | 0.63 |
| 8000 | 11.2 | 40.4 | 0.63 | |||||
| 10000 | 13.1 | 47.6 | 0.75 | |||||
| 12500 | 15.4 | 56.5 | 0.53 | |||||
| 16000 | 18.5 | 69.5 | 0.49 | |||||
| 20000 | 21.8 | 84.2 | 0.49 | |||||
| 25000 | 25.6 | 99.5 | 0.4 | |||||
| 31500 | 30.4 | 120 | 0.4 | |||||
| 40000 | 36.2 | 140.3 | 0.39 | |||||
| 50000 | 42.6 | 174.3 | 0.39 | |||||
| 63000 | 52 | 210 | 0.39 | |||||
| 75000 | 60 | 238 | 0.49 | |||||
| 90000 | 69 | 274 | 0.49 | |||||
| 120000 | 85 | 328 | 0.46 | |||||
| 150000 | 101 | 385 | 0.42 | |||||
| 160000 | 105 | 404 | 0.42 | |||||
| 180000 | 115 | 436 | 0.42 | |||||
| 240000 | 144 | 539 | 0.4 | |||||
Instrava OEM/ODM
Tailored Sourcing & Customization: Getting You the Exact Product You Need
As your trusted supplier and sourcing partner, we bridge the gap between your custom requirements and China’s vast manufacturing capabilities.
Finding the right product in a massive supply chain can be challenging. That is where we step in.
As a curated industrial supplier, our core value is simple: we stand in your shoes to help you procure the most optimal products. Whether you are an EPC contractor needing specialized technical compliance, an OEM equipment manufacturer looking for custom branding, or an industrial distributor/trader seeking competitive edge, we customize and tailor products to fit your exact procurement needs.
How We Customize to Fit Your Procurement Needs
For EPC Contractors & Engineers: We custom-configure instruments and devices to match your precise datasheets—tailoring process connections, exotic materials, signal protocols, and managing third-party calibration and testing so you get project-ready solutions.
For OEM Equipment Manufacturers: We provide comprehensive OEM/ODM customization, including custom housing, labeling, branding (private labeling), and tailored technical specifications to seamlessly integrate with your machinery.
For Industrial Distributors & Traders: We offer flexible customization in packaging, product ranges, and technical parameters, helping you differentiate your portfolio and win more local bids.
Why Partner with Us for Custom Sourcing?
One-Stop Engineering Alignment: You don’t have to deal with multiple factories. We translate your technical requirements into precise manufacturer blueprints.
Strict Quality & Compliance Safeguard: We oversee the entire customization and production process in China, ensuring the final customized product meets your local standards and certifications.
Our Ultimate Value: We don’t just sell what’s on the shelf. We find, customize, and deliver the most suitable and cost-effective product for your unique application.
What is the process for purchasing high voltage power transformers from Instrava?
1. Inquiry (We will respond to your inquiry within 24 hours to confirm specifications and initiate the process.)
2. Quotation (Quotation timelines vary based on the project type and your specific requirements. Standard stock items are quoted within one day, while special orders require three days or a mutually agreed-upon timeframe.)
3. Product Selection (We will present 3–5 product options and pricing for your approval. During this stage, we verify the manufacturer’s production capabilities and relevant national certifications.)
4. Contract, Prepayment, and Production (A 40% prepayment is required to initiate production at a qualified facility. For stock items, we promptly arrange for product testing and packaging.)
5. Interim Payment (Upon successful completion of production and quality inspection, the next 50% of the total amount is due. For stock items, this payment is made after packaging is complete.If the transaction amount does not exceed $50,000, the remaining 60% is paid.)
6. Shipment (You may designate a freight forwarder, or we can arrange shipping for you.)
7. Receipt of Goods (Our Quality Guarantee: When your cumulative order value reaches $50,000, you pay the remaining 10% only after receiving and verifying the product quality. We let our quality do the talking.)
8. After-Sales Service (We actively address and resolve issues through both online and offline channels. We place great importance on after-sales support, as it reflects our responsibility and reputation—the foundation of Instrava’s long-term growth.)
What are the advantages of buying power transformers from Instrava suppliers?
Compared to factories, we offer a more objective and impartial assessment of the advantages and disadvantages of our products compared to those from different manufacturers. We provide you with a wider selection of types, ensuring the best cost-effectiveness for your project. Our 3-5% service fee saves you significant time in finding and comparing products.
What types of transformers can I buy from Instrava?
Dry-type transformers, low-voltage small oil-immersed distribution transformers below 35KV, high-voltage transformers above 66KV-220KV (if higher voltage such as 500KV is required, detailed communication is needed), pole-mounted transformers, pad-mounted transformers, box-type transformers, UPS transformers, rectifier transformers, frequency converter transformers, step up power transformer, step down power transformer, Special transformers and other multi-purpose transformers.
How to ensure the reliability of the purchased products?
Our customer-centric philosophy prioritizes their procurement needs.
1. Initially confirm the manufacturer based on product pricing and the strength and qualifications of the production factory.
2. Verify the manufacturer’s production environment through video and on-site inspections to check the compliance of the entire product manufacturing process.
3. Ensure post-production product testing and retain data and video evidence from the verification process(testing and verification methods vary depending on the product)..
How does Instrava ensure product protection and physical safety during cross-border shipping?
Firstly, we confirm the packaged products with the factory (different products require different packaging and shipping methods. Heavy equipment and bulk shipments are securely secured within sea freight containers using custom-designed engineering steel frames, heavy-duty multi-layer wooden crates, and industrial-grade vacuum rust-proof bags. Precision instruments are protected against impacts and maintained in a stable position; the factory has extensive experience in this area. Custom labels are affixed to the outer packaging).
Secondly, we maintain communication with the freight company to confirm the condition of the goods and advise them to handle the loading and unloading processes with care.
What warranty policies and after-sales technical support does Instrava offer to international customers?
1. Instrava offers a comprehensive 12 to 24-month warranty (specific warranty period depends on the product line), covering all manufacturing and component defects.
2. When online technical support is needed, customers can connect with factory engineers online. Real-time guidance is provided for installation, on-site calibration (for instruments), and commissioning. When on-site engineer support is needed, we will arrange for an engineer to visit the site.
3. In the event of component issues, we will ship replacement parts via international express delivery (DHL/FedEx) to minimize your project downtime.
4. Whether a product requires replacement or repair will be clearly stated in the purchase contract.
Why Trust Instrava?
We select manufacturers from a neutral, impartial standpoint, always with your best interests in mind.
Our very existence depends on helping you source the products that are the perfect fit for your needs.
Based in China, we are able to conduct on-site inspections of production environments and product quality firsthand.
We help you avoid intermediaries posing as factories.
We facilitate smoother after-sales support, eliminating time zone issues and the delays often associated with dealing directly with factories.
Our multilingual team ensures effective communication.
For a trading startup, every interaction with a client is a precious opportunity—a sign that you are willing to place your trust in us and give us the chance to prove ourselves.
In the digital age, while information is easily accessible, misconceptions often cloud the trust between people.
Instrava relies entirely on trust; it is our core philosophy and the foundation of our existence in society. It is the fundamental basis for our long-term growth and our commitment to serving the community.
Please place your trust in us.
