Product Description



Oil Immersed Series Transformer:
The S11-M series, a fully sealed oil immersed power transformer brought to you by Chaotai Power, is a marvel of modern engineering. It stands out with its impressively low loss, minimal noise, and exceptional efficiency. These traits make it not only an energy-saving powerhouse but also a friend to the environment by significantly reducing pollution. Unlike typical oil immersed transformers, this fully sealed variant eliminates the need for an oil conservator. The intelligent design features a corrugated oil tank with flexible sheets that adapt to oil volume changes autonomously, ensuring the transformer is never exposed to air. This isolation safeguards the oil and insulation from deteriorating, thereby prolonging the transformer's life and enhancing its operational reliability—all while minimizing the need for maintenance during regular use.
1. Power Capacity: Ranging from 25 to 2500KVA, with voltage options of 24KV, 30KV, 33KV, 35KV, 36KV, and others tailored to customer needs. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation.
4. Tapping Range: Offers flexibility with ±5%, ±2x2.5%, ±4x2.5% adjustments.
5. Frequency: Compatible with both 50Hz and 60Hz systems.
6. Phases: Available in both Three-phase and Single-phase configurations.
7. Connection Symbol: Options include Dyn11 and Yyn0 configurations, or as specifically requested.
8. Short-circuit Impedance: Comes with standard impedance settings.
9. Altitude and Temperature: Designed for altitudes not exceeding 1000m, and ambient temperatures not surpassing 40°C. If conditions differ, parameters will be adjusted accordingly.
We ensure compliance with standards by modulating parameters to accommodate varying conditions.
Power Capacity: Available from 25 to 2500KVA, catering to diverse power needs.
Voltage Levels: Offer versatility with options including 10KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV.
Voltage Level:
Voltage Regulation Type: Opt for either Off-circuit or On-load adjustments based on use case.
Tapping Range: Features adjustable ranges of ±5%, ±2x2.5%, and ±4x2.5%.
Frequency: Adaptable to both 50Hz and 60Hz frequency ranges.
Phases: Configurable in either Three-phase or Single-phase.
Connection Symbol: Choose from standardized Dyn11 and Yyn0, or customize as needed.
Short-circuit Impedance: Engineered with standard impedance for reliable performance.
Environment Adaptability: Functions optimally up to 1000m altitude and 40°C temperature, with adjustments available for different conditions.
Our team will ensure that if requirements exceed standard conditions, necessary parameter adjustments will be made to adhere to industry standards.
Experience the excellence of Chaotai Power's fully sealed oil immersed power transformer, designed to deliver low energy loss, minimal noise, and superior efficiency. This innovation not only conserves energy but also lessens environmental impact.
By forgoing the traditional oil conservator, this transformer boasts a corrugated oil tank that dynamically adjusts to oil volume changes, isolated from air exposure. This prevents oil degradation and insulation aging, enhancing reliability and reducing maintenance needs during regular operations.
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 in the realm of electrical integration. As a high-tech enterprise, we are proud to boast a dynamic team specializing in research, development, production, and service, equipped with over 15 years of rich industry expertise that fuels our forward-thinking approach.
Our product lineup is vast and varied, featuring state-of-the-art high-voltage solid-state soft starters, efficient capacitor cabinets, versatile high and low voltage switchgear, advanced gas-insulated switchgear, and robust substations. These products have carved a niche across a spectrum of industries, including energy, chemical processing, metal smelting, and electric power grids. They also support industrial manufacturing, academic institutions, medical and pharmaceutical advancements, municipal commerce, and water resources management. Not to mention, they are integral to road traffic systems and enhance both commercial and residential infrastructures.
At the heart of Zhejiang Chaotai is a commitment to technological innovation and a 'smart manufacturing' ethos. We are dedicated to attracting top-tier technical talent to fortify our core competencies, aiming to deliver invaluable service to our customers while aspiring to sculpt the industry's leading brand. Since our inception, we've embarked on a journey of growth and excellence, transforming challenges into stepping stones, and mediocrity into mastery. By championing innovation, we pursue a modern business model that thrives on quality for survival, market dynamics for growth, reputation for development, and management efficiency for profit. Our mission is clear: to leverage technology as our guide, uphold rigorous standards, and prioritize customer satisfaction. Our unwavering focus is on bolstering our market strength, aiming to serve China's power transmission and distribution sectors with a vision that's faster, stronger, and higher. Integrity remains our foundation; quality, our standard; service, our priority; and customer satisfaction, our perpetual goal. With an unwavering pursuit of excellence, unrelenting innovation, and a commitment to nurturing a trustworthy brand, we forge ahead. Your trust fuels our journey. We extend our heartfelt gratitude to the patrons who fuel our growth, and we invite partners new and old to join Senhang Technology in crafting 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.