Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, a fully sealed oil immersed power transformer by Chaotai Power, engineered to perfection with remarkable low loss, minimal noise, and exceptional efficiency. This advanced transformer is designed to deliver outstanding energy conservation benefits while significantly reducing environmental impact. Distinct from the traditional oil immersed transformers, the fully sealed design eliminates the need for an oil conservator. The intelligent design of the corrugated oil tank allows for automatic adjustment and compensation of oil volume changes through the elasticity of its innovative corrugated sheet. This ensures the transformer remains isolated from air exposure, effectively preventing and decelerating oil degradation and insulation aging. The result is enhanced operational reliability and the elimination of maintenance needs during normal operations.
1. Power Capacity: Offering an extensive range from 25-2500KVA, adaptable to 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to specific customer requirements. 2. Voltage Level: Precision-engineered for diverse voltage specifications, including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Flexible options available for both off-circuit and on-load regulation.
4. Tapping Range: Versatile options include ±5%, 2x2.5%, and ±4x2.5% to suit your specific needs.
5. Frequency: Compatible with 50Hz or 60Hz standards, accommodating various operational requirements.
6. Phases: Configurable for both three-phase and single-phase applications.
7. Connection Symbol: Available in Dyn11, Yyn0 configurations or tailored to specific requests.
8. Short-circuit Impedance: Designed with standard impedance for optimal performance.
9. Altitude: Suitable for installations at altitudes not exceeding 1000m, with ambient temperatures up to 40°C.
If operational conditions exceed these parameters, we offer tailored adjustments in accordance with industry standards to ensure optimal performance.
Power Capacity: Ranging from 25-2500KVA, designed for diverse energy needs.
Voltage Levels ranging from 10KV to 36KV: Customizable as per user requirements.
Voltage Level: Engineered for a range of specifications, including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, and beyond.
Type of Voltage Regulation: Offers both off-circuit and on-load regulation to meet varied operational demands.
Tapping Range: Customizable options including ±5%, ±2x2.5%, and ±4x2.5% to cater to specific requirements.
Frequency: Adapts seamlessly to either 50Hz or 60Hz, ensuring flexibility.
Phases: Available in three-phase or single-phase configurations to suit diverse applications.
Connection Symbol: Configurable in Dyn11, Yyn0, or according to specific requests for optimal connectivity.
Short-circuit Impedance: Built with standard impedance to ensure reliable and safe operations.
Altitude suitability for up to 1000m, with ambient temperatures not exceeding 40°C.
Should environmental conditions surpass these limits, parameters will be fine-tuned in compliance with prevailing standards.
The fully sealed oil immersed power transformer by Chaotai Power is engineered for superior low loss, minimal noise, and unparalleled efficiency, delivering robust energy-saving performance that significantly minimizes pollution.
Unlike traditional oil immersed transformers, this fully sealed marvel eliminates the oil conservator, with oil volume changes effortlessly managed through the elasticity of the corrugated oil tank's advanced design. This innovation ensures the transformer remains isolated from air, effectively preventing oil degradation and insulation aging, thus boosting operational reliability and negating the need for maintenance during routine use.
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 beacon of innovation and excellence in electrical integration, proudly wearing the badge of a high-tech enterprise. With a robust and visionary R&D, production, and service team, we boast over 15 enriching years of industry wisdom and experience.
Our diverse product range encompasses cutting-edge high-voltage solid-state soft starters, advanced capacitor cabinets, versatile high and low voltage switchgear, state-of-the-art gas-insulated switchgear, and comprehensive substations. Our products are the lifeblood of critical sectors, powering energy and chemical industries, revolutionizing metal smelting, electrifying power grids, and fueling industrial manufacturing. They play a pivotal role in academia, the medical and pharmaceutical landscapes, boost municipal commerce, fortify water conservancy and hydropower infrastructures, enhance road traffic systems, and elevate commercial and residential environments.
Driven by innovation and propelled by our commitment to 'smart manufacturing,' we steadfastly attract top-tier technical talents to elevate our core competitive edge. Our mission is to deliver unparalleled value to our customers, striving to forge the industry’s leading brand. From humble beginnings, we've achieved remarkable growth—transforming from foundational roots to industry prominence. Our guiding business philosophy thrives on quality, market awareness, reputation-driven development, and efficiency through astute management. We stand unwavering in our commitment to 'technology as the guide, standardized management, superior quality, and customer satisfaction,' fortifying our market presence while ambitiously serving China's electric power and grid sectors with speed, strength, and ambition. Integrity, quality, service, and customer satisfaction remain our steadfast pillars, ever fueling our pursuit of excellence and innovation. Building a brand synonymous with trustworthiness is our steadfast goal. Your recognition fuels our passion, and we extend profound gratitude to all our patrons, both new and seasoned, for their unwavering support. Together, with Senhang Technology, we aspire to sculpt 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.