Product Introduction
The distribution transformer is a cornerstone in the power supply and distribution systems of industrial, mining enterprises, and civil buildings. It effectively steps down the 10(6)kV or 35kV network voltage to the 230/400V bus voltage for user applications. This superior product is ideal for AC 50(60)Hz systems, with a three-phase maximum rated capacity of 2500kVA and a single-phase maximum rated capacity of 833kVA (single-phase transformers are generally not recommended). It is versatile for indoor and outdoor installations, with capacities of 315kVA and below suitable for pole installation. The operational temperature range is between -25°C and 40°C, with a maximum daily average of 30ºC and an annual average of 20ºC. It is designed for environments with a relative humidity of no more than 90% at 25ºC and altitudes below 1000m. For conditions outside these parameters, adjustments can be made in line with GB6450-86 standards.
Our coil core fully sealed distribution transformer represents a new generation of low-noise, low-loss technology. Featuring a joint-free core, it significantly reduces no-load losses and currents by 60%-80%. The continuous winding of high and low voltage coils on the core pillar ensures tight winding and excellent concentricity, enhancing anti-theft features. Noise levels are reduced by over 10 decibels, with a lower temperature rise of 16-20K. The pure circular cross-sectional core optimally utilizes the orientation of silicon steel sheets, cutting no-load losses by 20%-30%.
Oil-ImmersedDistributionTransformers
| Rated capacdity (kVA) |
Voltage combinationand tap range |
Vector
group symbol |
Non-load
loss
(W) |
Load loss
(W) |
No-load
current
(%) |
Short arauit
mpedance
(%) |
High pressure
(kV) |
High pressure tap range (%) |
Low pressure
(kV) |
| 30 |
11
10.5
10
6.3
6 |
±5
±2×2.5% |
0.4
0.69
|
Yyn0
Dyn11 |
100 |
630/600 |
2.3 |
4 |
| 50 |
130 |
910/870 |
2.0 |
4 |
| 63 |
150 |
1090/1040 |
1.9 |
4 |
| 80 |
180 |
1310/1250 |
1.9 |
4 |
| 100 |
200 |
1580/1500 |
1.8 |
4 |
| 125 |
240 |
1890/1800 |
1.7 |
4 |
| 160 |
280 |
2310/2200 |
1.6 |
4 |
| 200 |
340 |
2730/2600 |
1.5 |
4 |
| 250 |
400 |
3200/3050 |
1.4 |
4 |
| 315 |
480 |
3830/3650 |
1.4 |
4 |
| 400 |
570 |
4520/4300 |
1.3 |
4 |
| 500 |
680 |
5410/5150 |
1.2 |
4 |
| 630 |
810 |
6200 |
1.1 |
4.5 |
| 800 |
960 |
7500 |
1.0 |
4.5 |
| 1000 |
1150 |
10300 |
1.0 |
4.5 |
| 1250 |
1360 |
12000 |
0.9 |
4.5 |
| 1600 |
1640 |
14500 |
0.8 |
4.5 |
| 2000 |
1960 |
19800 |
0.8 |
5 |
| 2500 |
2310 |
23000 |
0.7 |
5 |
Application Scenarios
The oil-immersed transformer epitomizes high performance and efficiency. Its innovative structure features three core columns arranged in equilateral triangles, eliminating air gaps in the magnetic circuit. This design ensures closer winding and uniform magnetic circuit lengths, enhancing performance, reducing losses, and minimizing noise. It balances the third harmonic component, making it ideal for urban and rural grids, industrial and mining enterprises, combined transformers, and pre-installed substation applications.
Situated in the picturesque Rainbow Industrial Park at the north end of East Second Ring Road in Linqing City, Shandong Province, Shandong Zhifeng Transformer Co., Ltd. is a beacon of innovative power equipment manufacturing. The company spans 45,000 square meters and specializes in oil-immersed transformers, dry-type transformers, special transformers, grounding transformers, arc suppression coils, reactors, box-type substations, American-style box transformers, and other power solutions up to 35KV. Our expertise seamlessly combines sales and R&D, establishing us as a leader in the industry.
Our company adheres strictly to ISI9001 quality system management standards. We employ advanced computer-aided integrated design technology, tailoring our products to meet regional environmental requirements and ensuring top-notch quality. Our state-of-the-art inspection and testing facilities include comprehensive performance test benches, high-performance voltage withstand equipment, program-controlled variable frequency power supplies, insulating oil gas chromatographs, acid value testers, and more. We also leverage cutting-edge production tools like vacuum drying equipment, digital winding machines, and laser cutting lines. With a workforce of over 100 employees, including 5 senior engineers and 18 intermediate and senior technicians, our technological prowess and rigorous testing protocols underpin our product excellence.
At Shandong Zhifeng Transformer Co., Ltd., our guiding principle is 'Sincerity and Trust, Climbing the Peak.' We prioritize customer satisfaction and are dedicated to delivering high-quality, safe, energy-saving, and eco-friendly power products to our global clientele.
At Shandong Zhifeng Transformer Co., Ltd., our transformers boast unparalleled quality and competitive pricing, complemented by exceptional after-sales service. We are committed to continuous improvement, striving to innovate and enhance our products. We eagerly anticipate building sincere collaborations with both new and longstanding customers.
Frequently Asked Questions
Q: Are you a manufacturer, factory, or trading company?
A: Yes, we are a dedicated manufacturer with over 15 years of expertise in the development, production, and operation of transformers.
Q: What is your warranty?
A: We provide a comprehensive 12-month warranty.
Q: What is the production time?
A: Typically, 30 to 45 days, depending on order specifications.
Q: What are your payment terms?
A: We accept T/T, L/C, or other negotiable terms.
Q: How does your factory ensure quality control?
A: We implement rigorous 100% quality control (QC) inspections to guarantee that each product meets our high standards. Our process includes more than 10 QC inspections from raw material procurement to the final manufacturing stage.
Q: Do you have any products in stock?
A: Typically, no. All our products are custom manufactured based on your order quantity.
Q: What information is required for a custom transformer?
A: Providing technical drawings and specification documents is ideal. Alternatively, you can detail the required technical specifications according to our 'Quote and Order Required Information' guidelines.
Q: Can I receive a catalogue and price list for a minimum order quantity (MOQ) trial order?
A: All of our products are proudly made in China and showcased on our official website. Feel free to contact us directly for more detailed information.
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