Product Description



Oil Immersed Series Transformer:
The cutting-edge S11-M series fully sealed oil immersed power transformer, developed by Chaotai Power, epitomizes the pinnacle of innovative engineering with its remarkable features of low loss, whisper-quiet operation, and unparalleled efficiency. It delivers outstanding energy-saving performance and significantly minimizes environmental pollution. Unlike standard oil immersed transformers, this state-of-the-art sealed design eliminates the need for an oil conservator. The oil volume is ingeniously self-adjusted and compensated through the dynamic elasticity of its corrugated oil tank sheets. The transformer remains completely isolated from atmospheric air, effectively retarding oil deterioration and insulation aging. This leads to enhanced operational reliability and eliminates the necessity for maintenance during normal operations.
1. Power Capacity: From a robust 25KVA to an expansive 2500KVA, adaptable to 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to meet specific customer demands. 2. Voltage Level: Offers versatility with options of 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation to suit operational needs.
4. Tapping Range: Precision tuning with ±5%, two increments of ±2.5%, and four increments of ±2.5% to optimize performance.
5. Frequency: Compatible with both 50Hz and 60Hz systems.
6. Phases: Available in both Three-phase and Single-phase configurations to cater to specific requirements.
7. Connection Symbol: Options include Dyn11, Yyn0, or customizable as per request.
8. Short-circuit Impedance: Designed to meet standard impedance requirements ensuring reliability and safety.
9. Altitude and Temperature: Built for resilience at altitudes up to 1000m withstanding ambient temperatures not exceeding 40°C. For extreme conditions, parameter adjustments are made in accordance with standards.
For challenging conditions, we offer tailored parameter adjustments adhering to industry standards.
Power Capacity: Ranges from 25KVA to a substantial 2500KVA.
Voltage Range: Flexible compatibility with variants such as 10KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV.
Voltage Level Options:
Type of Voltage Regulation: Available in both Off-circuit and On-load options.
Tapping Range: Precision configuration with ±5%, ±2x2.5%, ±4x2.5%.
Frequency: Catering to both 50Hz and 60Hz frequencies.
Phases: Flexible options with Three-phase or Single-phase availability.
Connection Symbol: Available configurations include Dyn11, Yyn0, or as requested by clients.
Short-circuit Impedance: Engineered to standard impedance levels.
Operating Conditions: Suitable for altitudes up to 1000m and ambient temperatures up to 40°C.
Should conditions exceed standard limits, parameters will be adjusted to comply with standard guidelines.
Chaotai Power's fully sealed oil immersed power transformer stands out for its superior low loss, minimal noise, and exceptional efficiency, ensuring a significant reduction in energy waste and pollution.
This innovative transformer effectively eliminates the need for an oil conservator. Its intelligent design automatically adjusts and compensates oil volume fluctuations through the flexible corrugated sheets of the oil tank, keeping it isolated from air exposure. This feature significantly slows the deterioration of oil and insulation aging, bolstering operational reliability and negating the necessity for routine maintenance during normal functioning.
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 as a beacon of innovation and expertise in the realm of electrical integration. As a high-tech enterprise, we pride ourselves on a seasoned team dedicated to research, development, production, and unparalleled service, boasting over 15 years of rich industry experience.
Our extensive product lineup features cutting-edge high-voltage solid-state soft starters, sophisticated capacitor cabinets, versatile high and low voltage switchgear, state-of-the-art gas-insulated switchgear, as well as robust substations. These advanced solutions are integral to a wide spectrum of industries, including the dynamic energy sector, complex chemical industries, advanced metal smelting processes, expansive power grids, innovative industrial manufacturing, distinguished universities, and pioneering research institutions. Additionally, our products play vital roles in the medical and pharmaceutical fields, municipal commerce, water conservancy, hydropower projects, road traffic systems, and both commercial and residential infrastructures.
At the core of our philosophy is a commitment to technological innovation and a visionary 'smart manufacturing' ethos. We actively recruit top-tier technical talents to amplify our core competitiveness, delivering unparalleled value to our customers while aspiring to set industry standards as the premier brand. Since our inception, Zhejiang Chaotai has embarked on a transformative journey—from inception to excellence—anchored by relentless innovation and a steadfast adherence to a modern business blueprint: thriving through quality, driving growth through reputation, and optimizing efficiency via astute management. Our dedication to 'technology leadership, standardized management, superior quality, and customer satisfaction' refines our quality and talent strategies, fortifying our competitive edge in the market. We are resolutely committed to advancing China's power transmission and distribution sectors with agility, strength, and elevated objectives. With integrity as our foundation, quality as our creed, and service as our pinnacle, customer satisfaction remains our eternal pursuit. We relentlessly chase excellence, foster continuous innovation, and endeavor to construct a brand of trustworthiness. Your endorsement fuels our momentum. We extend heartfelt gratitude to all our valued customers for their steadfast support and affection. Together with Senhang Technology, we eagerly anticipate forging a brighter future hand in hand.
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.