Product Description



Oil Immersed Series Transformer:
The S11-M series, a cutting-edge fully sealed oil immersed power transformer, crafted by Chaotai Power, boasts exceptional features like reduced loss, minimized noise, and outstanding efficiency. These attributes contribute to significant energy conservation and pollution reduction. Unlike traditional oil immersed transformers, this advanced design eliminates the oil conservator. The oil volume variations are ingeniously managed through the flexibility of the corrugated oil tank sheet, enhancing reliability by keeping the transformer air-isolated, which slows oil deterioration and insulation aging, ensuring superior operational dependability and maintenance-free performance.
1. Power Capacity: Ranging from 25-2500KVA, with voltage options of 24KV, 30KV, 33KV, 35KV, 36KV, and customizable as per customer requirements. 2. Voltage Level: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation for tailored functionality.
4. Tapping Range: Versatile tapping options include ±5%, ±2x2.5%, and ±4x2.5% for optimized performance.
5. Frequency: Compatible with both 50Hz and 60Hz frequencies for flexible utility.
6. Phases: Available in three-phase or single-phase configurations to suit diverse applications.
7. Connection Symbol: Standard options of Dyn11, Yyn0, or customized per request to meet specific needs.
8. Short-circuit Impedance: Adheres to standard impedance for reliable operation.
9. Altitude and Temperature: Operational at altitudes up to 1000m, withstanding ambient temperatures not exceeding 40°C. If these conditions are unmet, parameter adjustments will be made in accordance with standards.
Modifications are made to meet standards if operational conditions surpass limits.
Power Capacity: Spanning an extensive range from 25-2500KVA, offering versatility and scalability.
Voltage Level Options: Including comprehensive choices like 10KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV.
Voltage Level:
Type of Voltage Regulation: Options for Off-circuit or On-load configurations provide adaptable solutions.
Tapping Range: Offering ±5%, ±2x2.5%, and ±4x2.5% flexibility for enhanced adaptability.
Frequency: Designed to accommodate both 50Hz and 60Hz, ensuring wide-ranging application.
Phases: Available in both three-phase and single-phase models for varied usage scenarios.
Connection Symbol: Options include Dyn11 and Yyn0, customizable to user specifications.
Short-circuit Impedance: Compliant with standard impedance guidelines for optimal performance.
Altitude and Temperature Conditions: Operational efficiency at altitudes up to 1000m and in temperatures not exceeding 40°C.
Should conditions exceed these parameters, standards-compliant adjustments will be implemented.
The fully sealed oil immersed transformer from Chaotai Power is engineered to deliver low loss, minimal noise, and high efficiency. These features not only ensure energy saving but also significantly contribute to pollution reduction.
In contrast to conventional oil immersed transformers, this fully sealed design does away with the oil conservator. Its innovative approach automatically adjusts oil volume changes via the elasticity of the corrugated oil tank sheet, while maintaining air isolation. This technology effectively slows oil and insulation aging, boosting operational reliability and eliminating maintenance during regular operation.
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. is a pioneering high-tech enterprise at the forefront of electrical integration. We boast an adept team in R&D, production, and service, backed by over 15 years of distinguished industry experience.
Our extensive product range features high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. Our products have carved a niche across diverse sectors including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, medical and pharmaceutical fields, municipal commerce, water management and hydropower, road infrastructure, and both residential and commercial applications.
At the heart of our operations is a steadfast commitment to technological innovation, paired with a 'smart manufacturing' development philosophy. We are dedicated to attracting top-tier technical talent to significantly boost our core competitiveness, while consistently delivering unparalleled value to our clients. Our vision is to forge the leading brand in the industry. Our journey is one of relentless progress, transforming from nascent beginnings to industry excellence. We maintain a focus on innovation, following a business model that ensures survival through quality, market growth through reputation, and efficiency through strategic management. Our guiding principles of technology-driven advancements, standardized management, superior quality, and unwavering customer satisfaction fortify our market position. We aim to revolutionize China's power transmission and distribution sectors with ambitious goals rooted in speed, strength, and excellence. Integrity remains our bedrock; quality is our promise; unparalleled service is our commitment; customer satisfaction is our eternal mission. Our pursuit of excellence, continuous innovation, and dedication to building a trustworthy brand are the pillars of our unwavering development strategy. Your recognition fuels our ambition. We extend heartfelt gratitude to our valued customers, both new and old, for their enduring support and loyalty. Senhang Technology eagerly anticipates collaborating with you to shape a brighter future together.
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.