Product Description



Oil Immersed Series Transformer:
Introducing the S11-M series fully sealed oil immersed power transformer, expertly developed and crafted by Chaotai Power. This cutting-edge transformer boasts remarkable attributes like low loss, minimal noise, and exceptional efficiency. It promises outstanding energy-saving performance and contributes significantly to pollution reduction. Unlike conventional oil immersed transformers, this innovative design eliminates the need for an oil conservator. The oil volume changes are seamlessly adjusted and compensated by the elastic corrugated sheet of the corrugated oil tank. Ingeniously isolated from air exposure, this transformer excels in preventing and decelerating oil deterioration and insulation aging. It significantly enhances operational reliability and is crafted to be maintenance-free during regular operations.
1. Power Capacity: 25-2500 KVA, adaptable to 24KV, 30KV, 33KV, 35KV, 36KV, and customizable per customer specifications. 2. Voltage Level: Flexibly designed for 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Available in both Off-circuit and On-load options.
4. Tapping Range: A versatile range of ±5 %, 2x2.5 %, ±4x2.5 % for varied operational needs.
5. Frequency: Compatible with both 50Hz and 60Hz frequencies.
6. Phases: Available in both three-phase and single-phase configurations.
7. Connection Symbol: Offered as Dyn11, Yyn0, or tailored as per request.
8. Short-circuit Impedance: Engineered to standardized impedance for optimal performance.
Altitude not exceeding 1000m and ambient temperature not surpassing 40°C. If these conditions aren't met, parameter adjustments will be made following industry standards.
Compliant with the highest standards to ensure peak performance even in challenging conditions.
Power Capacity: 25-2500 KVA, ensuring robust adaptability and scalability.
10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 24KV, 30KV, 33KV, 35KV, and 36KV—tailored for versatile applications.
Voltage Level: Tailored to suit distinct requirements with precision.
Type of Voltage Regulation: Choose between Off-circuit and On-load to meet your specific needs.
Tapping Range: Offers flexibility with ±5%, ±2x2.5%, ±4x2.5% adjustments.
Frequency: Designed to operate seamlessly at both 50Hz and 60Hz.
Phases: Available in both singular and three-phase options.
Connection Symbol: Dyn11, Yyn0, or any custom requirement can be accommodated.
Short-circuit Impedance: Conforms to standard specifications for utmost efficiency.
Altitude is capped at 1000m with ambient temperature requirements not exceeding 40°C.
Should local conditions diverge from standard, parameter adjustments will be undertaken in line with prevailing norms.
The fully sealed oil immersed power transformer, crafted by Chaotai Power, merges low loss, diminished noise, and heightened efficiency. This results in a superior energy-saving outcome while minimizing environmental impact.
Distinguished from standard oil immersed transformers, this fully sealed variant omits the oil conservator, with oil volume variations expertly managed by the corrugated oil tank's elastic sheet. Its air-isolated design effectively curtails oil degradation and insulation wear, boosting operational dependability and negating 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

Welcome to Zhejiang ChaoTai Complete Equipment Co., Ltd., a beacon of high-tech innovation in the realm of electrical integration. Our expert team, boasting over 15 years of industry excellence, is dedicated to delivering unmatched R&D, production, and service experiences.
Discover our diverse and powerful product lineup, including high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. Our cutting-edge solutions are indispensable across sectors like energy, chemical industries, metal smelting, power grids, industrial manufacturing, academia, healthcare, municipal commerce, water resources, infrastructure, and both commercial and residential developments.
Driven by a passion for technological advancement and a commitment to 'smart manufacturing,' we are relentless in recruiting top-tier technical talent to elevate our core strengths. Our mission is to provide unparalleled value to our clients while establishing an industry-leading brand. Since our inception, we have grown remarkably, transforming into a cornerstone of excellence. We steadfastly embrace innovation, upholding a modern business ethos centered on quality-driven survival, market responsiveness, reputation-fueled growth, and management-enhanced efficiency. Our commitment is unwavering: 'technology as the guide, standardized management, excellent quality, and customer satisfaction.' These principles fortify our market position and propel us to serve China's power and grid sectors with unmatched speed, strength, and ambition. Integrity, quality, and service are the cornerstones of our customer-centric philosophy. We pursue excellence, foster innovation, and are dedicated to building a trusted brand. Your satisfaction is our motivation. We extend our heartfelt gratitude to longstanding and new clients alike for your steadfast support and affection. Zhejiang ChaoTai Complete Equipment Co., Ltd. eagerly anticipates partnering with you to forge a brighter, more prosperous 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.