Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series fully sealed oil-immersed power transformer, a groundbreaking product by Chaotai Power. This transformer offers exceptional benefits such as low loss, minimal noise, and outstanding efficiency, leading to significant energy savings while minimizing environmental impact. Unlike typical oil-immersed transformers, this innovative fully sealed design eliminates the need for an oil conservator. The transformer ingeniously adjusts and compensates for oil volume changes through the elastic corrugated sheets in the oil tank, ensuring it remains isolated from air. This isolation effectively prevents oil deterioration and insulation aging, significantly enhancing operational reliability and eliminating the need for maintenance during normal operation.
1. Power Capacity: 25-2500KVA, 24KV, 30KV, 33KV, 35KV, 36KV, and custom options available per customer requests. 2. Voltage Level: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation.
4. Tapping Range: Enjoy flexibility with ±5 %, 2x2.5 %, and ±4x2.5 %.
5. Frequency: Compatible with both 50Hz and 60Hz systems.
6. Phases: Available in both three-phase and single-phase configurations.
7. Connection Symbol: Standard connection symbols Dyn11 and Yyn0, with custom options upon request.
8. Short-circuit Impedance: Built to standard impedance specifications for reliability.
9. Altitude: Suitable for altitudes not exceeding 1000m and an ambient temperature not surpassing 40°C.
To ensure optimal performance under varying conditions, we will adjust parameters according to standards.
Power Capacity: Ranging from 25KVA to 2500KVA to meet diverse energy needs.
Voltage Levels: Flexibility with ranges from 10KV to 36KV, adaptable to your requirements.
Voltage Level:
Type of Voltage Regulation: Options include Off-circuit or On-load, tailored to your operational needs.
Tapping Range: Precision with ±5%, ±2x2.5%, and ±4x2.5% for regulation accuracy.
Frequency: Designed to operate seamlessly on either 50Hz or 60Hz power systems.
Phases: Offering both three-phase and single-phase units to suit any application.
Connection Symbol: Configurable as Dyn11, Yyn0, or custom as required to fit your specifications.
Short-circuit Impedance: Adheres to standard impedance ratings for optimal performance.
Altitude: Effective performance at elevations up to 1000m and in temperatures up to 40°C.
For conditions outside of these parameters, we offer flexible standard-based adjustments.
Experience the advantage of Chaotai Power's fully sealed oil-immersed power transformer, designed for low loss, low noise, and high efficiency. Achieve exceptional energy savings and pollution reduction.
Unlike conventional transformers, our fully sealed model eliminates the oil conservator, with automatic oil volume adjustment through the corrugated oil tank. This innovation keeps the transformer air-isolated, preventing oil and insulation deterioration, boosting reliability, and eliminating regular maintenance needs.
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 shining beacon in the high-tech realm, committed to pioneering advancements in electrical integration. Boasting a dedicated team specializing in research, development, production, and service, we bring over 15 years of unparalleled industry expertise to the forefront.
Our diverse portfolio features an impressive array of top-tier products, including high-voltage solid-state soft starters, advanced capacitor cabinets, and both high and low voltage switchgear, alongside cutting-edge gas-insulated switchgear and substations. Our robust solutions are making significant impacts across various sectors such as energy and chemical industries, metal smelting, and electric power grids. We also cater to the sophisticated needs of industrial manufacturing, educational institutions, medical and pharmaceutical sectors, as well as municipal commerce, water conservation, hydropower, road traffic, and both commercial and residential domains.
Championing a philosophy of 'smart manufacturing,' we prioritize technological innovation, continuously infusing our company with top-tier technical talent to elevate our core competitive edge. Our dedication is to deliver remarkable value to our clientele, relentlessly aspiring to establish the industry's leading brand. Since inception, our trajectory of growth has been remarkable, evolving from mere beginnings to an exemplar of excellence. Our business model thrives on innovation, ensuring quality-driven survival, market-focused development, reputation-based growth, and management-enhanced efficiency. We staunchly uphold principles of 'technology as the guide, standardized management, superior quality, and customer satisfaction,' intensifying our market competitiveness. Our mission is to serve China's transmission and distribution sector with ever-accelerating, robust, and elevated benchmarks. Integrity stands as our cornerstone, quality is paramount, service is supreme, and customer satisfaction remains our eternal pledge. In our pursuit of excellence and relentless innovation, we are dedicated to forging a brand that epitomizes trust and dependability. Your recognition fuels our ambition. We express profound gratitude to our loyal patrons for their enduring support and affection. Zhejiang ChaoTai eagerly anticipates forging a prosperous future together with you.
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.