Product Description



Oil Immersed Series Transformer:
Introducing the revolutionary S11-M series fully sealed oil immersed power transformer. Proudly developed and manufactured by Chaotai Power, this transformer sets new standards in energy efficiency, offering low loss, minimal noise, and unmatched operational efficiency. This marvel of engineering promises significant energy-saving benefits while minimizing environmental impact. Unlike conventional oil-immersed transformers, our innovative design eliminates the need for an oil conservator. The intelligent adjustment and compensation of oil volume through the corrugated sheet's elasticity ensure seamless performance. The transformer remains isolated from air infiltration, greatly reducing oil deterioration and insulation aging. This enhancement ensures superior operational reliability and a maintenance-free experience under normal conditions.
1. Power Capacity: Ranging from 25 to 2500 KVA with options for 24KV, 30KV, 33KV, 35KV, 36KV, and customizable specifications to suit customer requirements.
4. Tapping Range: Enjoy flexible adjustments with options for ±5%, 2x2.5%, and ±4x2.5% to meet diverse operational needs.
5. Frequency: Compatible with both 50Hz and 60Hz, ensuring versatile integration into various electrical systems.
6. Phases: Available in both three-phase and single-phase configurations to accommodate different applications.
7. Connection Symbol: Choose from Dyn11, Yyn0, or tailored options as requested to match specific connectivity needs.
8. Short-Circuit Impedance: Engineered with standard impedance to ensure robust and reliable performance.
9. Altitude: Designed to perform optimally at altitudes not exceeding 1000m, with an ambient temperature ceiling of 40°C. Should these conditions not be met, adjustments are available.
In the event that environmental conditions exceed specified limits, parameter modulation will be conducted in adherence to industry standards.
Power Capacity: From 25 to 2500 KVA, tailored to meet a wide range of power needs.
Voltage Levels: Available in various specifications including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV.
Voltage Level:
Type of Voltage Regulation: Choose between off-circuit or on-load regulation to fit specific operational demands.
Tapping Range: Options include ±5%, ±2x2.5%, and ±4x2.5% for flexible operation.
Frequency: Suitable for both 50Hz or 60Hz systems, providing flexibility for different electrical infrastructures.
Phases: Offered in three-phase or single-phase, meeting diverse electrical configurations.
Connection Symbol: Configurable with Dyn11, Yyn0, or customized as per requirements.
Short-Circuit Impedance: Manufactured with standard impedance to ensure consistent and safe operation.
Altitude and Temperature: Designed for operation below 1000m altitude and within a 40°C environment. If these conditions are exceeded, we will adapt parameters to comply with standards.
In cases where environmental conditions surpass the specified limits, we will adjust parameters to maintain standard compliance.
The fully sealed oil immersed power transformer, developed and manufactured by Chaotai Power, stands out with its low loss, low noise, and remarkable efficiency. Achieving excellent energy-saving effects, it also plays a significant role in pollution reduction.
Unlike standard oil immersed transformers, the groundbreaking fully sealed design eliminates the need for an oil conservator, with oil volume changes automatically managed by the corrugated oil tank's flexible sheet. Isolated from air, this design effectively prevents oil deterioration and insulation aging, enhancing operational reliability and eliminating the need for maintenance during regular 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. stands at the forefront of electrical integration as a prestigious high-tech enterprise. Boasting a robust team of seasoned professionals in R&D, production, and service, we leverage over 15 years of industry expertise to deliver cutting-edge solutions.
Our comprehensive product range includes high-voltage solid-state soft starters, sophisticated capacitor cabinets, versatile high and low voltage switchgear, innovative gas-insulated switchgear, and efficient substations. Our products find applications across a multitude of sectors, such as energy, chemicals, metal smelting, power grids, industrial manufacturing, academia, healthcare, municipal and commercial enterprises, water resources, hydropower, roadway systems, and diverse residential spaces.
Guided by a commitment to technological innovation and 'smart manufacturing,' we actively recruit top-tier technical talent to enhance our core competencies, all while delivering unparalleled value to our customers. Our ambition is to forge the industry's leading brand. Since our inception, we have transformed from humble beginnings to industry leadership, fueled by relentless progress and innovation. Our business philosophy is anchored in quality for survival, reputation for growth, market-centric development, and efficient management practices. We pledge to uphold 'technology leadership, standardized management, exceptional quality, and customer satisfaction,' reinforcing our competitive edge in China's power transmission and distribution sectors. Our foundation is integrity, our hallmark is quality, our promise is superior service, and customer satisfaction is our perpetual mission. We are committed to excellence, relentless innovation, and establishing a trustworthy brand. Your trust motivates us, and we extend heartfelt gratitude to our cherished clientele for their unwavering support. Together with Senhang Technology, let's shape a brighter tomorrow.
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.