Product Description



Introducing our robust Oil Immersed Series Transformer:
Revolutionize your power systems with Chaotai Power's S11-M series fully sealed oil immersed power transformer. Ingeniously engineered to deliver exceptional performance, this transformer boasts low loss, low noise, and high efficiency, ensuring remarkable energy-saving and reducing environmental impact. Unlike conventional oil immersed transformers, our advanced design eliminates the need for an oil conservator. The adaptable corrugated oil tank adjusts oil volume automatically, using its corrugated sheet’s elasticity, keeping the transformer isolated from air. This innovative design prevents oil deterioration and insulation aging, boosting operational reliability and minimizing the need for maintenance.
1. Power Capacity: From 25 to 2500KVA, offering voltages like 24KV, 30KV, 33KV, 35KV, 36KV, and customized options to meet your unique requirements. 2. Voltage Level: Versatile options including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Available in Off-circuit or On-load configurations.
4. Tapping Range: Discover flexibility with ±5 %, 2x2.5 %, and ±4x2.5 % options.
5. Frequency: Compatible with both 50Hz and 60Hz systems.
6. Phases: Choose between three-phase or single-phase models.
7. Connection Symbol: Customizable with Dyn11, Yyn0, or as per your specifications.
8. Short-circuit Impedance: Designed with standard impedance for optimal performance.
9. Altitude: Ideal for locations not exceeding 1000m in altitude and ambient temperatures not surpassing 40°C. If conditions exceed these parameters,
we pledge to adapt the parameters according to international standards, ensuring seamless operation.
Power capacity: From a versatile range of 25 to 2500KVA, we meet diverse energy needs.
Voltage Level: Offering a spectrum including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 24KV, 30KV, 33KV, 35KV, and 36KV.
Voltage Level:
Type of Voltage Regulation: Tailored to include Off-circuit or On-load, perfectly matching your system requirements.
Tapping Range: Engineered for precision with options of ±5%, ±2x2.5%, and ±4x2.5%.
Frequency: Applicable for both 50Hz and 60Hz frequency settings.
Phases: Available in robust three-phase or versatile single-phase configurations.
Connection Symbol: Choose from Dyn11, Yyn0, or tailor it to your specific needs.
Short-circuit Impedance: Maintained at standard levels for reliable operation.
Altitude: Designed for deployment in areas up to 1000m altitude, with ambient temperatures not exceeding 40°C.
Should these conditions be unmet, our commitment extends to recalibrating parameters to align with established standards, ensuring optimal performance.
The Chaotai Power fully sealed oil immersed power transformer is a marvel of engineering, offering low loss, reduced noise, and high efficiency. This leads to significant energy savings and minimal pollution, positioning it as an eco-friendly choice.
Innovatively designed compared to ordinary oil immersed transformers, the fully sealed variant eliminates the need for an oil conservator. It features an elastic corrugated oil tank that automatically adjusts for variations in oil volume, maintaining a hermetic seal against air. This proactive measure slows oil degradation and insulation aging, enhancing reliability and eliminating routine maintenance.
Product Parameters
Oil immersed transformer product parameters |
Rated capacity kVA |
Voltage combination |
NO-load loss W |
Load loss W |
No-load current% |
Short-circuit |
HV (KV ) |
HV tapping range |
LV (KV) |
Connection symbol |
Impedance |
30 |
6.3kV
10.5kV
11kV
13.2kV
13.8kV
15kV |
±2
× 2.5%;
Or ±5% |
0.4 |
Dyn11 or Yyn0 |
90 |
660 |
2.1 |
5.5 |
50 |
130 |
960 |
2 |
63 |
150 |
1145 |
1.9 |
80 |
180 |
1370 |
1.8 |
100 |
200 |
1650 |
1.6 |
125 |
240 |
1980 |
1.5 |
160 |
290 |
2420 |
1.4 |
200 |
330 |
2860 |
1.3 |
250 |
400 |
3350 |
1.2 |
315 |
480 |
4010 |
1.1 |
400 |
570 |
4730 |
1 |
500 |
680 |
5660 |
1 |
630 |
810 |
6820 |
0.9 |
6 |
800 |
980 |
8250 |
0.8 |
1000 |
1150 |
11300 |
0.7 |
1250 |
1350 |
13200 |
0.7 |
1600 |
1630 |
15950 |
0.6 |
2000 |
1950 |
19140 |
0.6 |
2500 |
2340 |
22200 |
0.6 |
Main product
Company Profile

Zhejiang ChaoTai Complete Equipment Co., Ltd. stands proudly as a beacon of innovation in the realm of electrical integration. As a high-tech enterprise, we boast a distinguished team of R&D, production, and service professionals, each bringing over 15 years of invaluable industry expertise to the forefront of our operations.
Our esteemed product line features cutting-edge high-voltage solid-state soft starters, precision-engineered capacitor cabinets, versatile high and low voltage switchgear, advanced gas-insulated switchgear, and robust substations. These products are integral to a myriad of sectors, seamlessly powering energy and chemical industries, metal smelting operations, electric power grids, and industrial manufacturing. Additionally, they are indispensable in universities, research institutions, the medical and pharmaceutical sectors, municipal commerce, water conservancy and hydropower projects, road traffic systems, as well as commercial and residential environments.
At Zhejiang ChaoTai, we wholeheartedly embrace technological innovation under the guiding principle of 'smart manufacturing.' Our strategic focus on attracting top-tier technical talents enhances our core competitiveness, enabling us to deliver unparalleled services and aspire to be the supreme brand in our sector. Since inception, our journey has been a testament to our commitment—transforming from nascent beginnings to achieving excellence. Our business philosophy champions innovation, sustaining quality, market alignment, reputation-driven growth, and efficiency through superior management. We steadfastly adhere to the pillars of 'technology as the guide, standardized management, exceptional quality, and customer satisfaction' to fortify our market presence and serve China's power transmission and distribution sectors with unmatched vigor. Integrity is our foundation, quality is our hallmark, service is our distinction, and customer satisfaction remains our eternal goal. As we pursue excellence and innovation, our aspiration to build an esteemed brand never wavers. Your trust propels us forward, and we extend heartfelt gratitude to all our customers for their loyalty and encouragement. Zhejiang ChaoTai eagerly anticipates partnering with you to craft a future brimming with promise and opportunity.
Our Advantages
Certifications
After Sales Service


FAQ
Q1. Are you a factory or trading company?
A.We are a factory.
Q2. Where is your factory located? How can I visit there?
A. Our factory is located in Wenzhou City, Zhejiang Province, China. You can fly to Longwan airport directly. All our clients,from home or abroad, are warmly welcome to visit us!
Q3. What's the payment term?
A. We accept TT. 30% deposit and 70% before shipment, Western Union, L/C At Sight is ok! We'll l show you the photos of the products and packages before you pay the balance.
Q4. Tell me the standard of package? What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons, If vou have leaallyl registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q5. Would you accept to use our logo?
A. If you have good quantity,it absolute no problem to do OEM.
Q6. How about the transport?
A. If the number of aoods is small we usually use TNT.DHL.FEDEX.EMS and some express voull offered. If the number of the goods is big usually we use the FWD you offered or we provided. Either by sea or by air is OK.
Q7. What is your Production lead time /delivery time?
A: Generally, it will take 25 to 30 days after receivina vour advance payment.
The specificl delivery time depends on the items and the quantity of your order. Silicone rubber's reqular product is 1,000/ week, Porcelain's need 2-3 weeks about 1000 pcs.
Q8. How do you make our business long-term and good relationship?
A:l. We keep aood auality and competitive price to ensure our customers benefit:
A: 2. We respect every customer as our friend and we sincerely do business and make friendsl with them, no matter where they come from.
A: 3.Most goods we have the type report according the IEC STANDARD
Q9. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the courier cost.
Q10. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q11. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q12.What certificates do you have?
A:ISO9001,OHSAS18001,ISO14001 certificate and Type test report of product.