Product Description



Oil Immersed Series Transformer:
Introducing the innovative S11-M series fully sealed oil immersed power transformer, meticulously crafted by Chaotai Power. This exceptional transformer stands out with its low loss, low noise, and superior efficiency, delivering remarkable energy-saving benefits while significantly reducing environmental impact. Unlike conventional oil-immersed transformers, this advanced model eliminates the need for an oil conservator. Its oil volume is seamlessly adjusted and compensated through the corrugated sheet's elasticity in the oil tank, ensuring the transformer remains sealed from air exposure. This isolation not only prevents oil deterioration and insulation aging but also enhances operational reliability, minimizing maintenance during regular use.
1. Power Capacity: Ranges from 25-2500KVA to meet diverse power requirements, with voltage levels of 24KV, 30KV, 33KV, 35KV, 36KV, and customizable options to suit customer needs. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, ensuring compatibility with various applications. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation for optimal performance.
4. Tapping Range: Offering versatility with a range of ±5%, 2x2.5%, ±4x2.5% to accommodate various operational settings.
5. Frequency: Operates efficiently at either 50Hz or 60Hz, catering to different regional requirements.
6. Phases: Available in both three-phase and single-phase configurations to match specific system demands.
7. Connection Symbol: Configurable as Dyn11, Yyn0, or customized as per request, ensuring seamless integration into existing systems.
8. Short-circuit Impedance: Designed with standard impedance for reliability and safety during operation.
9. Altitude and Temperature: Suitable for altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C. If these conditions are not met, we will adjust parameters in accordance with standards.
We ensure compliance with the expected standards to maintain optimal functionality and performance.
Power Capacity: From a robust range of 25-2500KVA, catering to diverse power demands with unparalleled efficiency.
Choose from voltage levels spanning 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV, perfectly aligning with various power applications.
Voltage Level: Configurable to suit a wide array of electrical needs, ensuring adaptability and precision.
Type of Voltage Regulation: Options include Off-circuit or On-load regulation, tailored to optimize your electrical systems.
Tapping Range: A flexible tapping range of ±5%, ±2x2.5%, ±4x2.5% ensures adaptability to specific requirements.
Frequency: Accommodates both 50Hz and 60Hz operations, offering versatile applicability.
Phases: Designed to support both three-phase and single-phase systems for comprehensive application coverage.
Connection Symbol: Configurations available as Dyn11, Yyn0, or as specified, ensuring smooth integration and compatibility.
Short-circuit Impedance: Built with standard impedance to ensure operational stability and protection.
Altitude Condition: Operates effectively at altitudes up to 1000m, withstanding ambient temperatures not surpassing 40°C.
If environmental conditions deviate from these standards, we provide adjustments to maintain regulatory compliance and optimal performance.
Chaotai Power's fully sealed oil-immersed power transformer boasts low loss, low noise, and exceptional efficiency, resulting in significant energy savings and reduced pollution.
This advanced transformer, compared to typical oil-immersed models, eliminates the oil conservator. The oil volume adjusts automatically through the oil tank's corrugated sheet elasticity, preventing air contact. This isolation preserves oil quality, reduces insulation aging, enhances operational reliability, and minimizes the need for maintenance during standard 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. is a trailblazing high-tech company dedicated to mastering the domain of electrical integration. Our stellar R&D, production, and service team boasts over 15 years of profound industry experience, ensuring cutting-edge solutions for our valued clients.
Our distinguished portfolio showcases an array of products, including high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear as well as gas-insulated switchgear, and state-of-the-art substations. These meticulously crafted innovations are pivotal across diverse sectors such as energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, and a myriad of other fields including universities, research institutions, medical and pharmaceutical industries, municipal commerce, water conservancy, hydropower, road traffic, and commercial plus residential domains.
Guided by our pioneering philosophy of technological innovation and 'smart manufacturing,' we are fervently recruiting elite technical talent to propel the company’s core advantages to the forefront of the industry. Our mission is to deliver unparalleled value, aiming to establish Zhejiang Chaotai as a leading brand par excellence. From our humble beginnings, we have charted an extraordinary journey towards excellence, persistently innovating and committing to a cutting-edge business model that is quality-driven, market-oriented, reputation-enhancing, and management-efficient. We pledge to remain rooted in integrity, place supreme importance on quality, deliver exceptional service, and uphold customer satisfaction as our timeless creed. Our zeal for excellence and perpetual innovation fuels our aspiration to build a brand synonymous with trust and distinction. We extend heartfelt gratitude to all our new and long-standing patrons for their unwavering support and affection. Senhang Technology eagerly anticipates collaborating with you to forge a brighter, more prosperous 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.