Product Description



Oil Immersed Series Transformer:
Elevate your power distribution with the S11-M series fully sealed oil immersed power transformer by Zhejiang Chaotai. This cutting-edge transformer boasts low loss, minimal noise, and exceptional efficiency, creating substantial energy savings and reducing environmental impact. Unlike conventional transformers, our fully sealed model eliminates the need for an oil conservator. The innovative corrugated oil tank automatically adjusts oil volume through its elastic design, insulating the transformer from air exposure. This design significantly mitigates oil degradation and insulation aging, bolstering operational reliability and minimizing maintenance during regular operation.
1. Power Capacity: Ranging from 25 to 2500KVA, adaptable to 24KV, 30KV, 33KV, 35KV, 36KV, and more based on customer requirements. 2. Voltage Level: Versatile options including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load for ultimate flexibility.
4. Tapping Range: Offering broad adjustability with ±5%, ±2x2.5%, ±4x2.5%.
5. Frequency: Operates at both 50Hz and 60Hz to meet diverse needs.
6. Phases: Available in both three-phase and single-phase configurations.
7. Connection Symbol: Options include Dyn11, Yyn0, or customized as requested.
8. Short-circuit Impedance: Designed to meet standard impedance requirements.
9. Altitude: Engineered for altitudes not exceeding 1000m; ambient temperatures not surpassing 40°C. Should needs vary, we adjust parameters accordingly to standard.
Ensuring adaptability, we adjust parameters in accordance with standards when conditions differ.
Power Capacity: A robust range from 25 to 2500KVA.
Voltage Levels: From 10KY to 36KV, accommodating a wide spectrum of electrical needs.
Voltage Level:
Type of Voltage Regulation: Offering Off-circuit or On-load options.
Tapping Range: Flexible adjustments with ±5%, ±2x2.5%, ±4x2.5%.
Frequency: Operational at both 50Hz and 60Hz.
Phases: Available in both three and single-phase variants.
Connection Symbol: Choose from Dyn11, Yyn0, or tailored to your needs.
Short-circuit Impedance: Adheres to standard impedance.
Altitude and Temperature: Optimal functionality at altitudes up to 1000m and temperatures no more than 40°C.
Parameter adjustments are made to adhere to standards if conditions are outside specified ranges.
Chaotai Power's fully sealed oil immersed transformer showcases the epitome of modern energy solutions, offering low loss, reduced noise, and high efficiency for outstanding energy conservation and pollution reduction.
Innovating beyond traditional transformers, our fully sealed unit eliminates the oil conservator. It employs a corrugated oil tank with elasticity to automatically adjust oil volume, ensuring air isolation. This design significantly retards oil and insulation deterioration, enhancing operation reliability and eliminating regular maintenance requirements.
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 and expertise in the realm of electrical integration. As a high-tech enterprise, we are backed by a professional team dedicated to R&D, production, and service, boasting over 15 years of profound industry experience.
Our illustrious array of products includes high-voltage solid-state soft starters, premium capacitor cabinets, comprehensive high and low voltage switchgear, advanced gas-insulated switchgear, and robust substations. These state-of-the-art solutions are currently empowering a wide spectrum of sectors such as energy and chemical industries, metal smelting, electric power grids, industrial manufacturing, academic institutions, healthcare and pharmaceuticals, municipal commerce, water conservancy and hydropower, road traffic management, as well as residential and commercial areas.
Embracing a future-forward philosophy of 'smart manufacturing', we are passionately committed to technological innovation. By welcoming top-tier technical talent, we continuously enhance our core competitiveness, offering unparalleled services to our valued clients while aspiring to forge the industry's most esteemed brand. From inception, our journey has been marked by remarkable progress—from inception to excellence. Guided by innovation, we adhere to a modern business ethos where quality is the foundation of survival, market-orientation is key to growth, reputation fuels development, and management drives efficiency. Committed to 'technology as the beacon, standardized management, impeccable quality, and ultimate customer satisfaction', we elevate our market competitiveness. Our mission is to revolutionize China's electric power and grid distribution with speed, strength, and ambition. Integrity remains our cornerstone, quality our priority, and service our pinnacle, with customer satisfaction as our perpetual pursuit. Pursuing excellence and innovation, we are dedicated to crafting a brand synonymous with trust. Your recognition fuels our journey, and we extend our heartfelt gratitude to both new and loyal patrons who have supported us. Zhejiang Chaotai Complete Equipment Co., Ltd. eagerly anticipates collaborating hand in hand with you to craft a brighter, shared future.
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.