Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series, a fully sealed oil-immersed power transformer from Chaotai Power, designed with excellence to deliver unmatched performance. Our transformers boast low loss, minimal noise, and superior efficiency, ensuring significant energy savings and reducing environmental impact. Unlike traditional transformers, our fully sealed design eliminates the oil conservator, allowing the oil volume to self-regulate through the elastic corrugated oil tank. This innovative approach isolates the transformer from atmospheric contact, significantly slowing oil degradation and insulation aging, thereby boosting operational reliability and minimizing maintenance needs during regular operation.
1. Power Capacity: Ranging from 25-2500KVA, adaptable for 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to meet customer-specific requirements. 2. Voltage Level: Options available at 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Available in Off-circuit or On-load regulation types.
4. Tapping Range: Versatile regulation at ±5%, ±2x2.5%, and ±4x2.5% for optimal performance.
5. Frequency: Compatible with both 50Hz and 60Hz systems.
6. Phases: Available in both three-phase and single-phase configurations.
7. Connection Symbol: Configurations include Dyn11 and Yyn0, with customization options available upon request.
8. Short-Circuit Impedance: Engineered with standard impedance for reliable operation.
9. Altitude: Suitable for installations up to 1000m above sea level with ambient temperatures up to 40°C. If conditions exceed these parameters, we will adjust specifications to meet standard requirements.
Specifications will be modulated in accordance with industry standards should the operating conditions exceed normal thresholds.
Power Capacity: Robust range from 25 to 2500KVA, catering to diverse energy needs.
Voltage Range: Extensive options available 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 and On-load for tailored voltage management.
Tapping Range: Flexibly designed for ±5%, ±2x2.5%, ±4x2.5%.
Frequency: Operable with both 50Hz and 60Hz power systems.
Phases: Designed for both three-phase and single-phase systems.
Connection Symbol: Configurable to Dyn11 and Yyn0, with options for client-specific requests.
Short-Circuit Impedance: Conforms to standard impedance specifications for consistent performance.
Altitude: Operational at altitudes not exceeding 1000m, and temperatures not surpassing 40°C.
Should environmental conditions surpass standard thresholds, we'll skillfully adjust parameters to align with established standards.
Fully sealed oil-immersed power transformers crafted by Chaotai Power embody advanced technology, offering low loss, reduced noise, and high efficiency. This results in exceptional energy-saving benefits and lessens environmental impact.
Our fully sealed transformers distinguish themselves from traditional models by eliminating the oil conservator. The oil volume adjusts dynamically via the corrugated oil tank, providing atmospheric isolation. This ingenious design prevents oil and insulation deterioration, enhances reliability, and reduces the need for maintenance under standard conditions.
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 electrical integration, recognized as a high-tech enterprise. With a proud legacy underpinned by over 15 years of unmatched industry experience, our team of dedicated professionals excels in Research & Development, production, and service. We are committed to advancing the limits of technology and delivering unparalleled solutions to our valued clientele.
Our prestigious range of products encompasses high-voltage solid-state soft starters, sophisticated capacitor cabinets, high and low voltage switchgear, avant-garde gas-insulated switchgear, and fully equipped substations. These state-of-the-art products find extensive applications across a myriad of sectors, including the dynamic energy and chemical industries, intensive metal smelting processes, robust electric power grids, and the expansive realm of industrial manufacturing. Additionally, our solutions are trusted by universities and research institutions, the medical and pharmaceutical sectors, as well as municipal commerce. Our expertise also extends to water conservancy and hydropower, enhancing road traffic systems, and meeting the needs of both commercial and residential infrastructures.
Guided by an unwavering commitment to technological innovation and our 'smart manufacturing' philosophy, Zhejiang ChaoTai is dedicated to attracting top-tier technical talent. This strategy empowers us to significantly bolster our company's core competitiveness, ensuring we provide invaluable services to our customers while aspiring to establish ourselves as the foremost brand in the industry. Since our inception, we have traversed a remarkable journey from inception to excellence, underpinned by a relentless pursuit of innovation and adhering to a modern business model that champions quality as the cornerstone, market needs as the compass, reputation as the growth catalyst, and management as the efficiency engine. Our commitment to 'technology as the guide, standardized management, exceptional quality, and customer satisfaction' steers our quality and technical talent management. This approach enhances our market competitiveness, aligning us with lofty goals to serve China's electric power and grid sectors with speed, strength, and superiority. Integrity underpins our foundation, quality leads our priorities, service stands above all, and customer satisfaction remains our eternal pledge. In our ceaseless quest for excellence and perpetual innovation, we are dedicated to building a brand that commands trust. Your recognition fuels our passion. We extend heartfelt gratitude to all our esteemed customers for their unwavering support and affection. Senhang Technology eagerly anticipates partnering with you to forge an illustrious 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.